./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs --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 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:19:33,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:19:33,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:19:33,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:19:33,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:19:33,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:19:33,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:19:33,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:19:33,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:19:33,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:19:33,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:19:33,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:19:33,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:19:33,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:19:33,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:19:33,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:19:33,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:19:33,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:19:33,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:19:33,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:19:33,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:19:33,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:19:33,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:19:33,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:19:33,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:19:33,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:19:33,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:19:33,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:19:33,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:19:33,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:19:33,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:19:33,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:19:33,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:19:33,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:19:33,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:19:33,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:19:33,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:19:33,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:19:33,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:19:33,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:19:33,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:19:33,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:19:33,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:19:33,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:19:33,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:19:33,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:19:33,523 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:19:33,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:19:33,523 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:19:33,523 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:19:33,524 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:19:33,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:19:33,525 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:19:33,526 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:19:33,526 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:19:33,526 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:19:33,526 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:19:33,527 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:19:33,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:19:33,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:19:33,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:19:33,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:19:33,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:19:33,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:19:33,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:19:33,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:19:33,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:19:33,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:19:33,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:19:33,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:19:33,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:19:33,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:19:33,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:19:33,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:19:33,532 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:19:33,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:19:33,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:19:33,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:19:33,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:19:33,534 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_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d [2021-11-19 14:19:33,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:19:33,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:19:33,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:19:33,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:19:33,898 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:19:33,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-11-19 14:19:33,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data/77b2d39de/dd155c80b06f49d39024f86489c7fb5a/FLAGb083f19e9 [2021-11-19 14:19:35,343 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:19:35,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-11-19 14:19:35,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data/77b2d39de/dd155c80b06f49d39024f86489c7fb5a/FLAGb083f19e9 [2021-11-19 14:19:35,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data/77b2d39de/dd155c80b06f49d39024f86489c7fb5a [2021-11-19 14:19:35,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:19:35,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:19:35,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:19:35,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:19:35,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:19:35,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:19:35" (1/1) ... [2021-11-19 14:19:35,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438aeb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:35, skipping insertion in model container [2021-11-19 14:19:35,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:19:35" (1/1) ... [2021-11-19 14:19:35,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:19:35,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:19:37,471 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,124 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,834 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,846 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,852 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,857 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,866 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,881 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,888 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,892 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,901 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,905 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,912 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,916 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,919 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,922 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,977 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,994 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,995 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,997 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:38,998 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,009 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,135 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,138 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,152 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,156 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,177 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,188 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,208 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,219 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,229 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,246 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,261 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,341 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,458 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,462 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,465 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,473 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,492 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,493 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,526 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,662 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,664 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,724 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,725 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,753 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,756 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:19:39,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i[386276,386289] [2021-11-19 14:19:40,065 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:19:40,115 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) [2021-11-19 14:19:40,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b8e1558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:40, skipping insertion in model container [2021-11-19 14:19:40,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:19:40,117 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:19:40,120 INFO L158 Benchmark]: Toolchain (without parser) took 4650.22ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 66.7MB in the beginning and 116.2MB in the end (delta: -49.5MB). Peak memory consumption was 72.6MB. Max. memory is 16.1GB. [2021-11-19 14:19:40,121 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 100.7MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:19:40,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4646.69ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 66.4MB in the beginning and 116.2MB in the end (delta: -49.7MB). Peak memory consumption was 72.6MB. Max. memory is 16.1GB. [2021-11-19 14:19:40,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 100.7MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4646.69ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 66.4MB in the beginning and 116.2MB in the end (delta: -49.7MB). Peak memory consumption was 72.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5311]: 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_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs --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 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:19:42,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:19:42,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:19:43,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:19:43,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:19:43,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:19:43,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:19:43,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:19:43,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:19:43,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:19:43,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:19:43,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:19:43,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:19:43,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:19:43,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:19:43,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:19:43,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:19:43,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:19:43,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:19:43,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:19:43,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:19:43,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:19:43,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:19:43,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:19:43,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:19:43,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:19:43,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:19:43,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:19:43,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:19:43,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:19:43,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:19:43,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:19:43,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:19:43,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:19:43,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:19:43,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:19:43,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:19:43,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:19:43,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:19:43,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:19:43,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:19:43,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:19:43,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:19:43,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:19:43,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:19:43,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:19:43,246 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:19:43,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:19:43,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:19:43,247 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:19:43,248 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:19:43,248 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:19:43,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:19:43,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:19:43,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:19:43,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:19:43,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:19:43,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:19:43,251 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:19:43,251 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:19:43,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:19:43,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:19:43,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:19:43,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:19:43,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:19:43,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:19:43,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:19:43,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:19:43,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:19:43,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:19:43,253 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:19:43,253 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:19:43,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:19:43,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:19:43,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:19:43,254 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_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d [2021-11-19 14:19:43,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:19:43,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:19:43,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:19:43,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:19:43,714 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:19:43,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-11-19 14:19:43,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data/4dc3422d4/d1a2bc7996c44ea1a86842b79a277ab4/FLAG3079cda55 [2021-11-19 14:19:45,162 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:19:45,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-11-19 14:19:45,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data/4dc3422d4/d1a2bc7996c44ea1a86842b79a277ab4/FLAG3079cda55 [2021-11-19 14:19:45,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/data/4dc3422d4/d1a2bc7996c44ea1a86842b79a277ab4 [2021-11-19 14:19:45,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:19:45,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:19:45,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:19:45,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:19:45,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:19:45,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:19:45" (1/1) ... [2021-11-19 14:19:45,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a7792c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:45, skipping insertion in model container [2021-11-19 14:19:45,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:19:45" (1/1) ... [2021-11-19 14:19:45,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:19:45,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:19:49,383 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i[386276,386289] [2021-11-19 14:19:49,577 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:19:49,620 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:19:49,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:19:50,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i[386276,386289] [2021-11-19 14:19:50,595 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:19:50,625 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:19:51,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i[386276,386289] [2021-11-19 14:19:51,675 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:19:51,914 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:19:51,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51 WrapperNode [2021-11-19 14:19:51,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:19:51,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:19:51,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:19:51,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:19:51,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,506 INFO L137 Inliner]: procedures = 371, calls = 3806, calls flagged for inlining = 167, calls inlined = 133, statements flattened = 7103 [2021-11-19 14:19:52,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:19:52,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:19:52,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:19:52,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:19:52,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:52,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:19:52,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:19:52,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:19:52,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:19:52,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (1/1) ... [2021-11-19 14:19:53,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:19:53,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:19:53,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:19:53,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:19:53,097 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2021-11-19 14:19:53,097 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2021-11-19 14:19:53,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:19:53,098 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2021-11-19 14:19:53,098 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2021-11-19 14:19:53,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:19:53,098 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-19 14:19:53,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:19:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:19:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:19:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:19:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2021-11-19 14:19:53,099 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2021-11-19 14:19:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 14:19:53,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 14:19:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-19 14:19:53,100 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-19 14:19:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 14:19:53,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 14:19:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure set_signals [2021-11-19 14:19:53,101 INFO L138 BoogieDeclarations]: Found implementation of procedure set_signals [2021-11-19 14:19:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure irq_test [2021-11-19 14:19:53,101 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_test [2021-11-19 14:19:53,102 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_dma_bufs [2021-11-19 14:19:53,102 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_dma_bufs [2021-11-19 14:19:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2021-11-19 14:19:53,103 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2021-11-19 14:19:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:19:53,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:19:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure flush_chars [2021-11-19 14:19:53,103 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_chars [2021-11-19 14:19:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2021-11-19 14:19:53,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2021-11-19 14:19:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-19 14:19:53,104 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-19 14:19:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 14:19:53,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 14:19:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure tx_stop [2021-11-19 14:19:53,106 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_stop [2021-11-19 14:19:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure sca_init [2021-11-19 14:19:53,106 INFO L138 BoogieDeclarations]: Found implementation of procedure sca_init [2021-11-19 14:19:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-19 14:19:53,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-19 14:19:53,107 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 14:19:53,107 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 14:19:53,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:19:53,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:19:53,108 INFO L130 BoogieDeclarations]: Found specification of procedure chars_in_buffer [2021-11-19 14:19:53,108 INFO L138 BoogieDeclarations]: Found implementation of procedure chars_in_buffer [2021-11-19 14:19:53,108 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 14:19:53,109 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 14:19:53,110 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-19 14:19:53,110 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-19 14:19:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure change_params [2021-11-19 14:19:53,111 INFO L138 BoogieDeclarations]: Found implementation of procedure change_params [2021-11-19 14:19:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-11-19 14:19:53,111 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-11-19 14:19:53,111 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-19 14:19:53,112 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-19 14:19:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-11-19 14:19:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-11-19 14:19:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:19:53,114 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:19:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure set_break [2021-11-19 14:19:53,114 INFO L138 BoogieDeclarations]: Found implementation of procedure set_break [2021-11-19 14:19:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure tx_start [2021-11-19 14:19:53,114 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_start [2021-11-19 14:19:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:19:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:19:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2021-11-19 14:19:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2021-11-19 14:19:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_frame_bufs [2021-11-19 14:19:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_frame_bufs [2021-11-19 14:19:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure rx_free_frame_buffers [2021-11-19 14:19:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_free_frame_buffers [2021-11-19 14:19:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:19:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure wait_until_sent [2021-11-19 14:19:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_until_sent [2021-11-19 14:19:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-19 14:19:53,117 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-19 14:19:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 14:19:53,117 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 14:19:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure synclinkmp_cleanup [2021-11-19 14:19:53,118 INFO L138 BoogieDeclarations]: Found implementation of procedure synclinkmp_cleanup [2021-11-19 14:19:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:19:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:19:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:19:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2021-11-19 14:19:53,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2021-11-19 14:19:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:19:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:19:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2021-11-19 14:19:53,121 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2021-11-19 14:19:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-19 14:19:53,122 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-19 14:19:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:19:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure set_rate [2021-11-19 14:19:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rate [2021-11-19 14:19:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-19 14:19:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-19 14:19:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:19:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:19:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:19:53,124 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2021-11-19 14:19:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2021-11-19 14:19:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:19:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-11-19 14:19:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-11-19 14:19:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 14:19:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 14:19:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2021-11-19 14:19:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2021-11-19 14:19:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-19 14:19:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-19 14:19:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2021-11-19 14:19:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2021-11-19 14:19:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 14:19:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 14:19:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure rx_stop [2021-11-19 14:19:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_stop [2021-11-19 14:19:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_test [2021-11-19 14:19:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_test [2021-11-19 14:19:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-19 14:19:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-19 14:19:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2021-11-19 14:19:53,142 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2021-11-19 14:19:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-19 14:19:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-19 14:19:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 14:19:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 14:19:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-19 14:19:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-19 14:19:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2021-11-19 14:19:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2021-11-19 14:19:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure release_resources [2021-11-19 14:19:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resources [2021-11-19 14:19:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 14:19:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 14:19:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 14:19:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 14:19:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-19 14:19:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-19 14:19:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure tx_set_idle [2021-11-19 14:19:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_set_idle [2021-11-19 14:19:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure set_termios [2021-11-19 14:19:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure set_termios [2021-11-19 14:19:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:19:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:19:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure write_room [2021-11-19 14:19:53,146 INFO L138 BoogieDeclarations]: Found implementation of procedure write_room [2021-11-19 14:19:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure enable_loopback [2021-11-19 14:19:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_loopback [2021-11-19 14:19:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure install [2021-11-19 14:19:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure install [2021-11-19 14:19:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_destroy [2021-11-19 14:19:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_destroy [2021-11-19 14:19:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:19:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:19:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure throttle [2021-11-19 14:19:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure throttle [2021-11-19 14:19:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-19 14:19:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-19 14:19:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:19:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:19:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure tx_load_fifo [2021-11-19 14:19:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_load_fifo [2021-11-19 14:19:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2021-11-19 14:19:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2021-11-19 14:19:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-19 14:19:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-19 14:19:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure tx_load_dma_buffer [2021-11-19 14:19:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_load_dma_buffer [2021-11-19 14:19:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:19:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:19:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:19:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure program_hw [2021-11-19 14:19:53,152 INFO L138 BoogieDeclarations]: Found implementation of procedure program_hw [2021-11-19 14:19:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:19:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2021-11-19 14:19:53,152 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2021-11-19 14:19:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:19:53,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:19:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure reset_port [2021-11-19 14:19:53,153 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_port [2021-11-19 14:19:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:19:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-19 14:19:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-19 14:19:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:19:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-11-19 14:19:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-11-19 14:19:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure register_test [2021-11-19 14:19:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure register_test [2021-11-19 14:19:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2021-11-19 14:19:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2021-11-19 14:19:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:19:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure hangup [2021-11-19 14:19:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure hangup [2021-11-19 14:19:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 14:19:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:19:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:19:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:19:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure get_icount [2021-11-19 14:19:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure get_icount [2021-11-19 14:19:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ops_disconnect_1 [2021-11-19 14:19:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ops_disconnect_1 [2021-11-19 14:19:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure write_control_reg [2021-11-19 14:19:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure write_control_reg [2021-11-19 14:19:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2021-11-19 14:19:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2021-11-19 14:19:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure unthrottle [2021-11-19 14:19:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure unthrottle [2021-11-19 14:19:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure tx_release [2021-11-19 14:19:53,160 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_release [2021-11-19 14:19:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-19 14:19:53,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-19 14:19:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-19 14:19:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-19 14:19:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_mode [2021-11-19 14:19:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_mode [2021-11-19 14:19:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure rx_get_frame [2021-11-19 14:19:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_get_frame [2021-11-19 14:19:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2021-11-19 14:19:53,162 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2021-11-19 14:19:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-19 14:19:53,162 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-19 14:19:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure send_xchar [2021-11-19 14:19:53,162 INFO L138 BoogieDeclarations]: Found implementation of procedure send_xchar [2021-11-19 14:19:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-19 14:19:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-19 14:19:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2021-11-19 14:19:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2021-11-19 14:19:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2021-11-19 14:19:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2021-11-19 14:19:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg16 [2021-11-19 14:19:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg16 [2021-11-19 14:19:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-19 14:19:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-19 14:19:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure get_signals [2021-11-19 14:19:53,165 INFO L138 BoogieDeclarations]: Found implementation of procedure get_signals [2021-11-19 14:19:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 14:19:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 14:19:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:19:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-11-19 14:19:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-11-19 14:19:53,172 INFO L130 BoogieDeclarations]: Found specification of procedure rx_start [2021-11-19 14:19:53,172 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_start [2021-11-19 14:19:53,172 INFO L130 BoogieDeclarations]: Found specification of procedure trace_block [2021-11-19 14:19:53,172 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_block [2021-11-19 14:19:53,172 INFO L130 BoogieDeclarations]: Found specification of procedure sanity_check [2021-11-19 14:19:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure sanity_check [2021-11-19 14:19:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:19:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:19:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure read_status_reg [2021-11-19 14:19:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure read_status_reg [2021-11-19 14:19:54,469 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:19:54,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:21:38,390 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:21:38,427 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:21:38,428 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:21:38,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:38 BoogieIcfgContainer [2021-11-19 14:21:38,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:21:38,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:21:38,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:21:38,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:21:38,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:19:45" (1/3) ... [2021-11-19 14:21:38,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c57027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:38, skipping insertion in model container [2021-11-19 14:21:38,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:19:51" (2/3) ... [2021-11-19 14:21:38,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c57027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:38, skipping insertion in model container [2021-11-19 14:21:38,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:38" (3/3) ... [2021-11-19 14:21:38,442 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-11-19 14:21:38,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:21:38,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:21:38,530 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:21:38,537 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 [2021-11-19 14:21:38,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:21:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 2807 states, 1985 states have (on average 1.418639798488665) internal successors, (2816), 2042 states have internal predecessors, (2816), 710 states have call successors, (710), 110 states have call predecessors, (710), 110 states have return successors, (710), 704 states have call predecessors, (710), 710 states have call successors, (710) [2021-11-19 14:21:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 14:21:38,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:38,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:38,637 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1191751299, now seen corresponding path program 1 times [2021-11-19 14:21:38,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:38,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940547466] [2021-11-19 14:21:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:38,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:38,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:38,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:38,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:21:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:40,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:21:40,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:40,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:41,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:41,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940547466] [2021-11-19 14:21:41,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940547466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:41,115 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:41,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:21:41,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467259254] [2021-11-19 14:21:41,118 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:41,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:21:41,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:41,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:21:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:21:41,166 INFO L87 Difference]: Start difference. First operand has 2807 states, 1985 states have (on average 1.418639798488665) internal successors, (2816), 2042 states have internal predecessors, (2816), 710 states have call successors, (710), 110 states have call predecessors, (710), 110 states have return successors, (710), 704 states have call predecessors, (710), 710 states have call successors, (710) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:43,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:43,846 INFO L93 Difference]: Finished difference Result 5608 states and 8514 transitions. [2021-11-19 14:21:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:21:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-19 14:21:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:43,905 INFO L225 Difference]: With dead ends: 5608 [2021-11-19 14:21:43,906 INFO L226 Difference]: Without dead ends: 2800 [2021-11-19 14:21:43,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:21:43,945 INFO L933 BasicCegarLoop]: 4224 mSDtfsCounter, 4207 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 4224 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:43,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4207 Valid, 4224 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:21:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2021-11-19 14:21:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2800. [2021-11-19 14:21:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2800 states, 1981 states have (on average 1.4174659262998486) internal successors, (2808), 2035 states have internal predecessors, (2808), 709 states have call successors, (709), 110 states have call predecessors, (709), 109 states have return successors, (704), 698 states have call predecessors, (704), 704 states have call successors, (704) [2021-11-19 14:21:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 4221 transitions. [2021-11-19 14:21:44,297 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 4221 transitions. Word has length 21 [2021-11-19 14:21:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:44,298 INFO L470 AbstractCegarLoop]: Abstraction has 2800 states and 4221 transitions. [2021-11-19 14:21:44,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 4221 transitions. [2021-11-19 14:21:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 14:21:44,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:44,307 INFO L514 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] [2021-11-19 14:21:44,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:44,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:44,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:44,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1711631940, now seen corresponding path program 1 times [2021-11-19 14:21:44,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:44,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483224744] [2021-11-19 14:21:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:44,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:44,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:44,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:21:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:46,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:21:46,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:46,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:46,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:46,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483224744] [2021-11-19 14:21:46,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483224744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:46,915 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:46,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:21:46,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060336307] [2021-11-19 14:21:46,915 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:46,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:21:46,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:21:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:21:46,918 INFO L87 Difference]: Start difference. First operand 2800 states and 4221 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:49,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:49,303 INFO L93 Difference]: Finished difference Result 2802 states and 4222 transitions. [2021-11-19 14:21:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:21:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-19 14:21:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:49,339 INFO L225 Difference]: With dead ends: 2802 [2021-11-19 14:21:49,339 INFO L226 Difference]: Without dead ends: 2799 [2021-11-19 14:21:49,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:21:49,350 INFO L933 BasicCegarLoop]: 4218 mSDtfsCounter, 4200 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:49,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4200 Valid, 4218 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:21:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2021-11-19 14:21:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2799. [2021-11-19 14:21:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 1981 states have (on average 1.4169611307420495) internal successors, (2807), 2034 states have internal predecessors, (2807), 708 states have call successors, (708), 110 states have call predecessors, (708), 109 states have return successors, (704), 698 states have call predecessors, (704), 704 states have call successors, (704) [2021-11-19 14:21:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4219 transitions. [2021-11-19 14:21:49,560 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4219 transitions. Word has length 22 [2021-11-19 14:21:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:49,561 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 4219 transitions. [2021-11-19 14:21:49,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4219 transitions. [2021-11-19 14:21:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 14:21:49,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:49,565 INFO L514 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] [2021-11-19 14:21:49,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:49,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:49,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:49,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1522194266, now seen corresponding path program 1 times [2021-11-19 14:21:49,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:49,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144837266] [2021-11-19 14:21:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:49,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:49,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:49,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:49,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:21:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:51,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:21:51,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:51,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:52,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:52,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144837266] [2021-11-19 14:21:52,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144837266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:52,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:52,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:21:52,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517909783] [2021-11-19 14:21:52,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:52,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:21:52,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:21:52,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:21:52,104 INFO L87 Difference]: Start difference. First operand 2799 states and 4219 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:54,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:54,520 INFO L93 Difference]: Finished difference Result 2801 states and 4220 transitions. [2021-11-19 14:21:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:21:54,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-19 14:21:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:54,549 INFO L225 Difference]: With dead ends: 2801 [2021-11-19 14:21:54,550 INFO L226 Difference]: Without dead ends: 2798 [2021-11-19 14:21:54,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:21:54,556 INFO L933 BasicCegarLoop]: 4216 mSDtfsCounter, 4197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 4216 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:54,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4197 Valid, 4216 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:21:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-19 14:21:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-11-19 14:21:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 1981 states have (on average 1.4164563351842503) internal successors, (2806), 2033 states have internal predecessors, (2806), 707 states have call successors, (707), 110 states have call predecessors, (707), 109 states have return successors, (704), 698 states have call predecessors, (704), 704 states have call successors, (704) [2021-11-19 14:21:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4217 transitions. [2021-11-19 14:21:54,755 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4217 transitions. Word has length 23 [2021-11-19 14:21:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:54,755 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4217 transitions. [2021-11-19 14:21:54,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:54,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4217 transitions. [2021-11-19 14:21:54,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 14:21:54,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:54,761 INFO L514 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] [2021-11-19 14:21:54,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:54,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:54,985 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash 55411199, now seen corresponding path program 1 times [2021-11-19 14:21:54,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:54,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481454984] [2021-11-19 14:21:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:54,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:54,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:54,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:55,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:21:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:56,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1429 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:21:56,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:56,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:21:57,365 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:57,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481454984] [2021-11-19 14:21:57,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481454984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:57,365 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:57,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:21:57,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983277900] [2021-11-19 14:21:57,366 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:57,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:21:57,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:21:57,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:21:57,367 INFO L87 Difference]: Start difference. First operand 2798 states and 4217 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:21:59,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:21:59,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:59,882 INFO L93 Difference]: Finished difference Result 3310 states and 4949 transitions. [2021-11-19 14:21:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:21:59,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-19 14:21:59,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:59,921 INFO L225 Difference]: With dead ends: 3310 [2021-11-19 14:21:59,921 INFO L226 Difference]: Without dead ends: 3299 [2021-11-19 14:21:59,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:21:59,927 INFO L933 BasicCegarLoop]: 4392 mSDtfsCounter, 4101 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:59,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4101 Valid, 5210 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:21:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2021-11-19 14:22:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3299. [2021-11-19 14:22:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2310 states have (on average 1.4086580086580087) internal successors, (3254), 2371 states have internal predecessors, (3254), 841 states have call successors, (841), 148 states have call predecessors, (841), 147 states have return successors, (840), 832 states have call predecessors, (840), 840 states have call successors, (840) [2021-11-19 14:22:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4935 transitions. [2021-11-19 14:22:00,225 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4935 transitions. Word has length 24 [2021-11-19 14:22:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:00,226 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4935 transitions. [2021-11-19 14:22:00,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:22:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4935 transitions. [2021-11-19 14:22:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 14:22:00,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:00,245 INFO L514 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] [2021-11-19 14:22:00,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:00,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:00,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2055295418, now seen corresponding path program 1 times [2021-11-19 14:22:00,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:00,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909552085] [2021-11-19 14:22:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:00,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:00,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:00,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:00,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:22:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:01,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:22:01,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:02,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:03,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:03,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909552085] [2021-11-19 14:22:03,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909552085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:03,088 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:03,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:22:03,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304728805] [2021-11-19 14:22:03,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:03,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:22:03,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:03,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:22:03,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:22:03,090 INFO L87 Difference]: Start difference. First operand 3299 states and 4935 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:22:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:07,079 INFO L93 Difference]: Finished difference Result 8128 states and 12103 transitions. [2021-11-19 14:22:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:22:07,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 64 [2021-11-19 14:22:07,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:07,130 INFO L225 Difference]: With dead ends: 8128 [2021-11-19 14:22:07,130 INFO L226 Difference]: Without dead ends: 4832 [2021-11-19 14:22:07,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:22:07,160 INFO L933 BasicCegarLoop]: 5184 mSDtfsCounter, 2232 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 9097 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:07,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 9097 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 14:22:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2021-11-19 14:22:07,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4832. [2021-11-19 14:22:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 3397 states have (on average 1.3979982337356491) internal successors, (4749), 3480 states have internal predecessors, (4749), 1211 states have call successors, (1211), 224 states have call predecessors, (1211), 223 states have return successors, (1210), 1199 states have call predecessors, (1210), 1210 states have call successors, (1210) [2021-11-19 14:22:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 7170 transitions. [2021-11-19 14:22:07,639 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 7170 transitions. Word has length 64 [2021-11-19 14:22:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:07,640 INFO L470 AbstractCegarLoop]: Abstraction has 4832 states and 7170 transitions. [2021-11-19 14:22:07,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:22:07,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 7170 transitions. [2021-11-19 14:22:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 14:22:07,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:07,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:07,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:07,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:07,885 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1834541467, now seen corresponding path program 1 times [2021-11-19 14:22:07,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:07,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309612387] [2021-11-19 14:22:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:07,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:07,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:07,890 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:07,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:22:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:09,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:22:09,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:10,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:10,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:10,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309612387] [2021-11-19 14:22:10,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309612387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:10,994 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:10,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:22:10,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028743556] [2021-11-19 14:22:10,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:10,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:22:10,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:22:10,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:22:10,996 INFO L87 Difference]: Start difference. First operand 4832 states and 7170 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:22:13,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:32,476 INFO L93 Difference]: Finished difference Result 14492 states and 21504 transitions. [2021-11-19 14:22:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:22:32,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2021-11-19 14:22:32,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:32,604 INFO L225 Difference]: With dead ends: 14492 [2021-11-19 14:22:32,604 INFO L226 Difference]: Without dead ends: 9657 [2021-11-19 14:22:32,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:22:32,644 INFO L933 BasicCegarLoop]: 8398 mSDtfsCounter, 4199 mSDsluCounter, 15379 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4199 SdHoareTripleChecker+Valid, 23777 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:32,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4199 Valid, 23777 Invalid, 1424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1422 Invalid, 1 Unknown, 0 Unchecked, 20.5s Time] [2021-11-19 14:22:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9657 states. [2021-11-19 14:22:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9657 to 4832. [2021-11-19 14:22:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 3397 states have (on average 1.3974094789520164) internal successors, (4747), 3480 states have internal predecessors, (4747), 1211 states have call successors, (1211), 224 states have call predecessors, (1211), 223 states have return successors, (1210), 1199 states have call predecessors, (1210), 1210 states have call successors, (1210) [2021-11-19 14:22:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 7168 transitions. [2021-11-19 14:22:33,311 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 7168 transitions. Word has length 78 [2021-11-19 14:22:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:33,312 INFO L470 AbstractCegarLoop]: Abstraction has 4832 states and 7168 transitions. [2021-11-19 14:22:33,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:22:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 7168 transitions. [2021-11-19 14:22:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 14:22:33,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:33,332 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:33,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:33,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:33,546 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:33,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1172666625, now seen corresponding path program 1 times [2021-11-19 14:22:33,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:33,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294856448] [2021-11-19 14:22:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:33,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:33,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:33,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:33,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:22:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:34,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 14:22:34,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:37,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:40,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:40,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294856448] [2021-11-19 14:22:40,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294856448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:40,864 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:40,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 15 [2021-11-19 14:22:40,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415288295] [2021-11-19 14:22:40,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:40,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:22:40,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:22:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:22:40,867 INFO L87 Difference]: Start difference. First operand 4832 states and 7168 transitions. Second operand has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 4 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-19 14:22:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:46,669 INFO L93 Difference]: Finished difference Result 12315 states and 18617 transitions. [2021-11-19 14:22:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:22:46,670 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 4 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 98 [2021-11-19 14:22:46,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:46,720 INFO L225 Difference]: With dead ends: 12315 [2021-11-19 14:22:46,720 INFO L226 Difference]: Without dead ends: 7486 [2021-11-19 14:22:46,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:22:46,852 INFO L933 BasicCegarLoop]: 5139 mSDtfsCounter, 6053 mSDsluCounter, 45998 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6281 SdHoareTripleChecker+Valid, 51137 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:46,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6281 Valid, 51137 Invalid, 1317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1156 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 14:22:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2021-11-19 14:22:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 4848. [2021-11-19 14:22:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4848 states, 3409 states have (on average 1.3960105602816075) internal successors, (4759), 3492 states have internal predecessors, (4759), 1213 states have call successors, (1213), 224 states have call predecessors, (1213), 225 states have return successors, (1228), 1203 states have call predecessors, (1228), 1212 states have call successors, (1228) [2021-11-19 14:22:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 7200 transitions. [2021-11-19 14:22:47,297 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 7200 transitions. Word has length 98 [2021-11-19 14:22:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:47,299 INFO L470 AbstractCegarLoop]: Abstraction has 4848 states and 7200 transitions. [2021-11-19 14:22:47,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 4 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-19 14:22:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 7200 transitions. [2021-11-19 14:22:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:22:47,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:47,317 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:47,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:47,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:47,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash 521346011, now seen corresponding path program 1 times [2021-11-19 14:22:47,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:47,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731162709] [2021-11-19 14:22:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:47,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:47,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:47,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:47,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:22:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:48,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 14:22:48,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:50,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:22:53,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:53,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731162709] [2021-11-19 14:22:53,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731162709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:53,361 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:53,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-19 14:22:53,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863219101] [2021-11-19 14:22:53,362 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:53,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:22:53,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:22:53,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:22:53,364 INFO L87 Difference]: Start difference. First operand 4848 states and 7200 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 12 states have internal predecessors, (106), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-19 14:22:58,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:59,573 INFO L93 Difference]: Finished difference Result 21883 states and 32855 transitions. [2021-11-19 14:23:59,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 14:23:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 12 states have internal predecessors, (106), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 100 [2021-11-19 14:23:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:59,673 INFO L225 Difference]: With dead ends: 21883 [2021-11-19 14:23:59,673 INFO L226 Difference]: Without dead ends: 17038 [2021-11-19 14:23:59,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:23:59,705 INFO L933 BasicCegarLoop]: 6744 mSDtfsCounter, 14661 mSDsluCounter, 70744 mSDsCounter, 0 mSdLazyCounter, 3981 mSolverCounterSat, 1353 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14677 SdHoareTripleChecker+Valid, 77488 SdHoareTripleChecker+Invalid, 5335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1353 IncrementalHoareTripleChecker+Valid, 3981 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:59,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14677 Valid, 77488 Invalid, 5335 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1353 Valid, 3981 Invalid, 1 Unknown, 0 Unchecked, 61.1s Time] [2021-11-19 14:23:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17038 states. [2021-11-19 14:24:00,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17038 to 9588. [2021-11-19 14:24:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9588 states, 6738 states have (on average 1.3974473137429504) internal successors, (9416), 6898 states have internal predecessors, (9416), 2403 states have call successors, (2403), 443 states have call predecessors, (2403), 446 states have return successors, (2434), 2380 states have call predecessors, (2434), 2402 states have call successors, (2434) [2021-11-19 14:24:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9588 states to 9588 states and 14253 transitions. [2021-11-19 14:24:00,942 INFO L78 Accepts]: Start accepts. Automaton has 9588 states and 14253 transitions. Word has length 100 [2021-11-19 14:24:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:00,943 INFO L470 AbstractCegarLoop]: Abstraction has 9588 states and 14253 transitions. [2021-11-19 14:24:00,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 12 states have internal predecessors, (106), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-19 14:24:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 9588 states and 14253 transitions. [2021-11-19 14:24:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:24:00,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:00,982 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:01,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:01,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:01,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 225045604, now seen corresponding path program 1 times [2021-11-19 14:24:01,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:01,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507648460] [2021-11-19 14:24:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:01,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:01,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:01,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:01,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:24:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:02,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:24:02,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:03,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:24:04,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:04,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507648460] [2021-11-19 14:24:04,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507648460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:04,891 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:04,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:24:04,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833273315] [2021-11-19 14:24:04,891 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:04,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:24:04,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:04,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:24:04,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:24:04,892 INFO L87 Difference]: Start difference. First operand 9588 states and 14253 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:24:07,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:12,719 INFO L93 Difference]: Finished difference Result 24819 states and 36956 transitions. [2021-11-19 14:24:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:24:12,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2021-11-19 14:24:12,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:12,801 INFO L225 Difference]: With dead ends: 24819 [2021-11-19 14:24:12,802 INFO L226 Difference]: Without dead ends: 15234 [2021-11-19 14:24:12,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:24:12,843 INFO L933 BasicCegarLoop]: 6347 mSDtfsCounter, 3531 mSDsluCounter, 3873 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 131 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3531 SdHoareTripleChecker+Valid, 10220 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:12,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3531 Valid, 10220 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 348 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-19 14:24:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15234 states. [2021-11-19 14:24:14,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15234 to 15231. [2021-11-19 14:24:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15231 states, 10734 states have (on average 1.3896962921557667) internal successors, (14917), 11001 states have internal predecessors, (14917), 3774 states have call successors, (3774), 717 states have call predecessors, (3774), 722 states have return successors, (3821), 3735 states have call predecessors, (3821), 3773 states have call successors, (3821) [2021-11-19 14:24:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15231 states to 15231 states and 22512 transitions. [2021-11-19 14:24:14,442 INFO L78 Accepts]: Start accepts. Automaton has 15231 states and 22512 transitions. Word has length 101 [2021-11-19 14:24:14,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:14,443 INFO L470 AbstractCegarLoop]: Abstraction has 15231 states and 22512 transitions. [2021-11-19 14:24:14,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:24:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 15231 states and 22512 transitions. [2021-11-19 14:24:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:24:14,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:14,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:14,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-19 14:24:14,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:14,689 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1520454019, now seen corresponding path program 1 times [2021-11-19 14:24:14,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:14,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122232930] [2021-11-19 14:24:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:14,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:14,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:14,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:24:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:16,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:24:16,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:24:18,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:24:20,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:20,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122232930] [2021-11-19 14:24:20,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122232930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:20,144 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:20,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 14:24:20,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048484052] [2021-11-19 14:24:20,145 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:20,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:24:20,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:24:20,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:24:20,147 INFO L87 Difference]: Start difference. First operand 15231 states and 22512 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-19 14:24:24,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:24,466 INFO L93 Difference]: Finished difference Result 30315 states and 45410 transitions. [2021-11-19 14:24:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:24:24,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 100 [2021-11-19 14:24:24,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:24,548 INFO L225 Difference]: With dead ends: 30315 [2021-11-19 14:24:24,548 INFO L226 Difference]: Without dead ends: 15087 [2021-11-19 14:24:24,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:24:24,619 INFO L933 BasicCegarLoop]: 4038 mSDtfsCounter, 6698 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6698 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1459 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:24,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6698 Valid, 4038 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1459 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 14:24:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15087 states. [2021-11-19 14:24:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15087 to 15087. [2021-11-19 14:24:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15087 states, 10608 states have (on average 1.3611425339366516) internal successors, (14439), 10869 states have internal predecessors, (14439), 3762 states have call successors, (3762), 711 states have call predecessors, (3762), 716 states have return successors, (3809), 3723 states have call predecessors, (3809), 3761 states have call successors, (3809) [2021-11-19 14:24:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15087 states to 15087 states and 22010 transitions. [2021-11-19 14:24:26,474 INFO L78 Accepts]: Start accepts. Automaton has 15087 states and 22010 transitions. Word has length 100 [2021-11-19 14:24:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:26,476 INFO L470 AbstractCegarLoop]: Abstraction has 15087 states and 22010 transitions. [2021-11-19 14:24:26,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-19 14:24:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 15087 states and 22010 transitions. [2021-11-19 14:24:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:24:26,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:26,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:26,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:26,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:26,713 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:26,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1096807297, now seen corresponding path program 1 times [2021-11-19 14:24:26,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:26,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632910859] [2021-11-19 14:24:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:26,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:26,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:26,718 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:26,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:24:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:28,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:24:28,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:24:29,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:24:30,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:30,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632910859] [2021-11-19 14:24:30,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632910859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:30,432 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:30,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:24:30,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886557051] [2021-11-19 14:24:30,432 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:30,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:24:30,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:30,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:24:30,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:24:30,434 INFO L87 Difference]: Start difference. First operand 15087 states and 22010 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:24:31,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:31,474 INFO L93 Difference]: Finished difference Result 30211 states and 44143 transitions. [2021-11-19 14:24:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:24:31,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2021-11-19 14:24:31,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:31,559 INFO L225 Difference]: With dead ends: 30211 [2021-11-19 14:24:31,559 INFO L226 Difference]: Without dead ends: 15127 [2021-11-19 14:24:31,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:24:31,628 INFO L933 BasicCegarLoop]: 4098 mSDtfsCounter, 5 mSDsluCounter, 16389 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20487 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:31,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 20487 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:24:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15127 states. [2021-11-19 14:24:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15127 to 15103. [2021-11-19 14:24:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15103 states, 10620 states have (on average 1.3607344632768361) internal successors, (14451), 10881 states have internal predecessors, (14451), 3762 states have call successors, (3762), 711 states have call predecessors, (3762), 720 states have return successors, (3871), 3727 states have call predecessors, (3871), 3761 states have call successors, (3871) [2021-11-19 14:24:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15103 states to 15103 states and 22084 transitions. [2021-11-19 14:24:33,200 INFO L78 Accepts]: Start accepts. Automaton has 15103 states and 22084 transitions. Word has length 100 [2021-11-19 14:24:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:33,201 INFO L470 AbstractCegarLoop]: Abstraction has 15103 states and 22084 transitions. [2021-11-19 14:24:33,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 14:24:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 15103 states and 22084 transitions. [2021-11-19 14:24:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-19 14:24:33,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:33,224 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:33,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:33,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:33,449 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:33,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:33,450 INFO L85 PathProgramCache]: Analyzing trace with hash 535996702, now seen corresponding path program 1 times [2021-11-19 14:24:33,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:33,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508087490] [2021-11-19 14:24:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:33,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:33,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:33,454 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:33,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:24:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:35,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:24:35,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:24:37,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:24:42,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:42,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508087490] [2021-11-19 14:24:42,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508087490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:42,505 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:42,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:24:42,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286345241] [2021-11-19 14:24:42,506 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:42,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:24:42,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:24:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:24:42,508 INFO L87 Difference]: Start difference. First operand 15103 states and 22084 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 6 states have internal predecessors, (148), 6 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-19 14:24:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:48,507 INFO L93 Difference]: Finished difference Result 30203 states and 44175 transitions. [2021-11-19 14:24:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:24:48,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 6 states have internal predecessors, (148), 6 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 100 [2021-11-19 14:24:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:48,587 INFO L225 Difference]: With dead ends: 30203 [2021-11-19 14:24:48,588 INFO L226 Difference]: Without dead ends: 15103 [2021-11-19 14:24:48,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:24:48,642 INFO L933 BasicCegarLoop]: 3978 mSDtfsCounter, 8119 mSDsluCounter, 7209 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8124 SdHoareTripleChecker+Valid, 11187 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1920 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:48,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8124 Valid, 11187 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1920 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-19 14:24:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15103 states. [2021-11-19 14:24:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15103 to 15103. [2021-11-19 14:24:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15103 states, 10620 states have (on average 1.3603578154425613) internal successors, (14447), 10881 states have internal predecessors, (14447), 3762 states have call successors, (3762), 711 states have call predecessors, (3762), 720 states have return successors, (3871), 3727 states have call predecessors, (3871), 3761 states have call successors, (3871) [2021-11-19 14:24:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15103 states to 15103 states and 22080 transitions. [2021-11-19 14:24:50,019 INFO L78 Accepts]: Start accepts. Automaton has 15103 states and 22080 transitions. Word has length 100 [2021-11-19 14:24:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:50,020 INFO L470 AbstractCegarLoop]: Abstraction has 15103 states and 22080 transitions. [2021-11-19 14:24:50,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 6 states have internal predecessors, (148), 6 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-19 14:24:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 15103 states and 22080 transitions. [2021-11-19 14:24:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 14:24:50,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:50,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:50,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:50,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:50,249 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash 414910221, now seen corresponding path program 1 times [2021-11-19 14:24:50,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:50,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135530160] [2021-11-19 14:24:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:50,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:50,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:50,253 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:50,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:24:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:51,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:24:51,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:24:54,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:24:56,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:56,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135530160] [2021-11-19 14:24:56,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135530160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:56,602 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:56,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 14:24:56,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710416515] [2021-11-19 14:24:56,602 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:56,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:24:56,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:56,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:24:56,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:24:56,604 INFO L87 Difference]: Start difference. First operand 15103 states and 22080 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 6 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-19 14:24:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:58,701 INFO L93 Difference]: Finished difference Result 27627 states and 40185 transitions. [2021-11-19 14:24:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:24:58,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 6 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 101 [2021-11-19 14:24:58,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:58,775 INFO L225 Difference]: With dead ends: 27627 [2021-11-19 14:24:58,775 INFO L226 Difference]: Without dead ends: 12527 [2021-11-19 14:24:58,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:24:58,825 INFO L933 BasicCegarLoop]: 3515 mSDtfsCounter, 3491 mSDsluCounter, 17522 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3496 SdHoareTripleChecker+Valid, 21037 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:58,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3496 Valid, 21037 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:24:58,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12527 states. [2021-11-19 14:24:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12527 to 12527. [2021-11-19 14:25:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12527 states, 8858 states have (on average 1.3471438247911491) internal successors, (11933), 9051 states have internal predecessors, (11933), 3006 states have call successors, (3006), 653 states have call predecessors, (3006), 662 states have return successors, (3115), 2991 states have call predecessors, (3115), 3005 states have call successors, (3115) [2021-11-19 14:25:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12527 states to 12527 states and 18054 transitions. [2021-11-19 14:25:00,059 INFO L78 Accepts]: Start accepts. Automaton has 12527 states and 18054 transitions. Word has length 101 [2021-11-19 14:25:00,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:00,060 INFO L470 AbstractCegarLoop]: Abstraction has 12527 states and 18054 transitions. [2021-11-19 14:25:00,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 6 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-19 14:25:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 12527 states and 18054 transitions. [2021-11-19 14:25:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 14:25:00,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:00,082 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:25:00,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:25:00,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:25:00,297 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:25:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1551842954, now seen corresponding path program 1 times [2021-11-19 14:25:00,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:25:00,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169846148] [2021-11-19 14:25:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:00,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:25:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:25:00,302 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:25:00,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:25:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:02,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:25:02,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:25:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:25:03,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:25:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:25:04,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:25:04,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169846148] [2021-11-19 14:25:04,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169846148] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:25:04,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:25:04,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-19 14:25:04,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47123933] [2021-11-19 14:25:04,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:04,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:25:04,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:25:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:25:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:25:04,221 INFO L87 Difference]: Start difference. First operand 12527 states and 18054 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:25:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:05,299 INFO L93 Difference]: Finished difference Result 25075 states and 36151 transitions. [2021-11-19 14:25:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:25:05,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2021-11-19 14:25:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:05,348 INFO L225 Difference]: With dead ends: 25075 [2021-11-19 14:25:05,348 INFO L226 Difference]: Without dead ends: 12551 [2021-11-19 14:25:05,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:25:05,376 INFO L933 BasicCegarLoop]: 3533 mSDtfsCounter, 2 mSDsluCounter, 10595 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14128 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:05,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 14128 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:25:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12551 states. [2021-11-19 14:25:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12551 to 12535. [2021-11-19 14:25:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12535 states, 8866 states have (on average 1.3468305887660725) internal successors, (11941), 9055 states have internal predecessors, (11941), 3006 states have call successors, (3006), 653 states have call predecessors, (3006), 662 states have return successors, (3115), 2995 states have call predecessors, (3115), 3005 states have call successors, (3115) [2021-11-19 14:25:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12535 states to 12535 states and 18062 transitions. [2021-11-19 14:25:06,353 INFO L78 Accepts]: Start accepts. Automaton has 12535 states and 18062 transitions. Word has length 111 [2021-11-19 14:25:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:06,354 INFO L470 AbstractCegarLoop]: Abstraction has 12535 states and 18062 transitions. [2021-11-19 14:25:06,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:25:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 12535 states and 18062 transitions. [2021-11-19 14:25:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 14:25:06,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:06,369 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:06,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:25:06,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:25:06,589 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:25:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1113833451, now seen corresponding path program 1 times [2021-11-19 14:25:06,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:25:06,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520985073] [2021-11-19 14:25:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:06,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:25:06,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:25:06,592 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:25:06,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:25:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:08,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 14:25:08,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:25:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:25:15,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:25:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:25:25,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:25:25,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520985073] [2021-11-19 14:25:25,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520985073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:25:25,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2139680023] [2021-11-19 14:25:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:25,397 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:25:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:25:25,403 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:25:25,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 14:25:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:26,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:25:26,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:25:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:25:28,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:25:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 14:25:29,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2139680023] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:25:29,173 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:25:29,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11, 11] total 19 [2021-11-19 14:25:29,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663467753] [2021-11-19 14:25:29,173 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:29,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:25:29,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:25:29,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:25:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:25:29,175 INFO L87 Difference]: Start difference. First operand 12535 states and 18062 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:25:31,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:25:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:32,088 INFO L93 Difference]: Finished difference Result 12535 states and 18062 transitions. [2021-11-19 14:25:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:25:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 111 [2021-11-19 14:25:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:32,090 INFO L225 Difference]: With dead ends: 12535 [2021-11-19 14:25:32,090 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 14:25:32,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:25:32,110 INFO L933 BasicCegarLoop]: 3760 mSDtfsCounter, 281 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 7247 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:32,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 7247 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 14:25:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 14:25:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 14:25:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:25:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 14:25:32,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2021-11-19 14:25:32,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:32,114 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 14:25:32,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:25:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 14:25:32,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 14:25:32,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:25:32,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:25:32,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:25:32,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71b2486f-ae96-474f-b824-fac88d6ea392/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:25:32,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.