./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF --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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:42:00,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:42:00,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:42:00,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:42:00,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:42:00,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:42:00,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:42:00,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:42:00,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:42:00,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:42:00,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:42:00,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:42:00,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:42:00,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:42:00,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:42:00,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:42:00,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:42:00,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:42:00,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:42:00,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:42:00,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:42:00,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:42:00,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:42:00,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:42:00,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:42:00,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:42:00,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:42:00,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:42:00,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:42:00,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:42:00,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:42:00,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:42:00,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:42:00,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:42:00,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:42:00,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:42:00,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:42:00,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:42:00,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:42:00,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:42:00,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:42:00,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:42:00,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:42:00,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:42:00,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:42:00,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:42:00,395 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:42:00,396 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:42:00,396 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:42:00,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:42:00,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:42:00,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:42:00,397 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:42:00,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:42:00,398 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:42:00,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:42:00,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:42:00,399 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:42:00,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:42:00,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:42:00,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:42:00,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:42:00,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:42:00,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:42:00,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:42:00,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:42:00,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:42:00,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:42:00,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:42:00,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:42:00,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:00,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:42:00,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:42:00,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:42:00,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:42:00,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:42:00,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:42:00,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:42:00,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:42:00,405 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_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2021-11-12 23:42:00,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:42:00,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:42:00,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:42:00,731 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:42:00,732 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:42:00,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-12 23:42:00,812 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data/fd3171bb4/06cca374fcab44579d3a524468a04bb8/FLAG5b72b0681 [2021-11-12 23:42:01,763 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:42:01,764 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-12 23:42:01,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data/fd3171bb4/06cca374fcab44579d3a524468a04bb8/FLAG5b72b0681 [2021-11-12 23:42:02,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data/fd3171bb4/06cca374fcab44579d3a524468a04bb8 [2021-11-12 23:42:02,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:42:02,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:42:02,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:02,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:42:02,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:42:02,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:02" (1/1) ... [2021-11-12 23:42:02,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ebeb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:02, skipping insertion in model container [2021-11-12 23:42:02,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:02" (1/1) ... [2021-11-12 23:42:02,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:42:02,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:03,406 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,408 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,426 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,570 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,617 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,625 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,626 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,630 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,631 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,633 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,634 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,638 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,640 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,641 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,642 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,644 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,645 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,660 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,665 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,668 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,671 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,674 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,704 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,706 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,922 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,923 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,929 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,942 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,942 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:03,947 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,104 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,110 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,115 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,120 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,125 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,130 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,135 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,141 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,145 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,152 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,158 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,165 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,171 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,171 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,180 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,180 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,201 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,206 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:42:04,235 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-12 23:42:04,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:04,432 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) [2021-11-12 23:42:04,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7880cdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:04, skipping insertion in model container [2021-11-12 23:42:04,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:04,433 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:42:04,437 INFO L158 Benchmark]: Toolchain (without parser) took 2245.12ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 58.4MB in the beginning and 71.5MB in the end (delta: -13.1MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2021-11-12 23:42:04,438 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 65.5MB in the end (delta: 8.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:42:04,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2240.77ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 58.2MB in the beginning and 72.1MB in the end (delta: -13.9MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2021-11-12 23:42:04,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 65.5MB in the end (delta: 8.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2240.77ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 58.2MB in the beginning and 72.1MB in the end (delta: -13.9MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3290]: 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_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF --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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:42:06,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:42:06,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:42:06,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:42:06,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:42:06,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:42:06,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:42:06,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:42:06,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:42:06,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:42:06,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:42:06,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:42:06,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:42:06,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:42:06,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:42:06,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:42:06,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:42:06,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:42:06,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:42:06,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:42:06,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:42:06,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:42:06,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:42:06,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:42:06,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:42:06,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:42:06,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:42:06,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:42:06,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:42:06,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:42:06,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:42:06,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:42:06,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:42:06,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:42:06,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:42:06,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:42:06,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:42:06,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:42:06,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:42:06,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:42:06,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:42:06,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:42:06,664 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:42:06,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:42:06,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:42:06,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:42:06,666 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:42:06,667 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:42:06,667 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:42:06,667 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:42:06,668 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:42:06,668 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:42:06,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:42:06,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:42:06,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:42:06,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:42:06,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:42:06,671 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:42:06,671 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:42:06,672 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:42:06,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:42:06,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:42:06,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:42:06,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:42:06,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:42:06,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:42:06,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:06,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:42:06,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:42:06,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:42:06,674 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:42:06,674 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:06,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:42:06,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:42:06,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:42:06,675 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_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2021-11-12 23:42:07,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:42:07,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:42:07,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:42:07,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:42:07,110 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:42:07,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-12 23:42:07,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data/193d187cb/39afbfe06b344896aadecb417d0e2fab/FLAGd24df85e2 [2021-11-12 23:42:08,179 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:42:08,180 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-12 23:42:08,224 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data/193d187cb/39afbfe06b344896aadecb417d0e2fab/FLAGd24df85e2 [2021-11-12 23:42:08,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/data/193d187cb/39afbfe06b344896aadecb417d0e2fab [2021-11-12 23:42:08,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:42:08,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:42:08,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:08,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:42:08,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:42:08,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:08" (1/1) ... [2021-11-12 23:42:08,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8eb438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:08, skipping insertion in model container [2021-11-12 23:42:08,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:08" (1/1) ... [2021-11-12 23:42:08,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:42:08,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:10,900 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-12 23:42:10,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:11,136 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:42:11,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:11,613 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-12 23:42:11,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:11,700 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:42:12,293 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-12 23:42:12,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:12,531 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:42:12,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12 WrapperNode [2021-11-12 23:42:12,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:12,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:12,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:42:12,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:42:12,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:12,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:12,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:12,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:42:12,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:42:12,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:42:12,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:12,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:12,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:12,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:13,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:13,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:13,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:13,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:42:13,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:42:13,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:42:13,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:42:13,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (1/1) ... [2021-11-12 23:42:13,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:13,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:42:13,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:42:13,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:42:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:42:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure rio_uevent [2021-11-12 23:42:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_uevent [2021-11-12 23:42:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-11-12 23:42:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-11-12 23:42:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:42:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:42:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:42:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:42:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:42:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:42:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:42:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:42:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:42:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-12 23:42:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-12 23:42:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-12 23:42:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-12 23:42:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-12 23:42:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-12 23:42:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-12 23:42:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-12 23:42:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-12 23:42:13,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-12 23:42:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_16 [2021-11-12 23:42:13,347 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_16 [2021-11-12 23:42:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:42:13,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:42:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_remove [2021-11-12 23:42:13,347 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_remove [2021-11-12 23:42:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:42:13,348 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:42:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 23:42:13,348 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 23:42:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-12 23:42:13,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-12 23:42:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure disc_work_handler [2021-11-12 23:42:13,349 INFO L138 BoogieDeclarations]: Found implementation of procedure disc_work_handler [2021-11-12 23:42:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:42:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~~u32~0~TO~C_INT [2021-11-12 23:42:13,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~~u32~0~TO~C_INT [2021-11-12 23:42:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_put [2021-11-12 23:42:13,349 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_put [2021-11-12 23:42:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:42:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-12 23:42:13,350 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-12 23:42:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-12 23:42:13,350 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-12 23:42:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:42:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:42:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:42:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_16 [2021-11-12 23:42:13,351 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_16 [2021-11-12 23:42:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:42:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:42:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:42:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_read_config_32 [2021-11-12 23:42:13,352 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_read_config_32 [2021-11-12 23:42:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:42:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:42:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_write_config_32 [2021-11-12 23:42:13,352 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_write_config_32 [2021-11-12 23:42:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:42:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:42:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-12 23:42:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-12 23:42:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-12 23:42:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-12 23:42:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure rio_name [2021-11-12 23:42:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_name [2021-11-12 23:42:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-12 23:42:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-12 23:42:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_probe [2021-11-12 23:42:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_probe [2021-11-12 23:42:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-12 23:42:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-12 23:42:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_32 [2021-11-12 23:42:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_32 [2021-11-12 23:42:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-12 23:42:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-12 23:42:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_get [2021-11-12 23:42:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_get [2021-11-12 23:42:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 23:42:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~~u16~0~X~~u8~0~X~~u32~0~X~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 23:42:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:42:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:42:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~C_INT [2021-11-12 23:42:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~C_INT [2021-11-12 23:42:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:42:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:42:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-12 23:42:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-12 23:42:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:42:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-12 23:42:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-12 23:42:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:42:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 23:42:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2021-11-12 23:42:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2021-11-12 23:42:13,358 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_8 [2021-11-12 23:42:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_8 [2021-11-12 23:42:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_bus [2021-11-12 23:42:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_bus [2021-11-12 23:42:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_32 [2021-11-12 23:42:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_32 [2021-11-12 23:42:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-12 23:42:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-12 23:42:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_device [2021-11-12 23:42:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_device [2021-11-12 23:42:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-12 23:42:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-12 23:42:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_8 [2021-11-12 23:42:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_8 [2021-11-12 23:42:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:42:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:42:14,859 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:42:45,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:42:45,141 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:42:45,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:45 BoogieIcfgContainer [2021-11-12 23:42:45,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:42:45,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:42:45,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:42:45,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:42:45,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:42:08" (1/3) ... [2021-11-12 23:42:45,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742f4f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:45, skipping insertion in model container [2021-11-12 23:42:45,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:12" (2/3) ... [2021-11-12 23:42:45,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742f4f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:45, skipping insertion in model container [2021-11-12 23:42:45,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:45" (3/3) ... [2021-11-12 23:42:45,160 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-12 23:42:45,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:42:45,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:42:45,223 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:42:45,229 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 [2021-11-12 23:42:45,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:42:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 914 states, 670 states have (on average 1.3761194029850747) internal successors, (922), 701 states have internal predecessors, (922), 196 states have call successors, (196), 47 states have call predecessors, (196), 46 states have return successors, (176), 175 states have call predecessors, (176), 176 states have call successors, (176) [2021-11-12 23:42:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-12 23:42:45,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:45,290 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:45,290 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:45,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1330153297, now seen corresponding path program 1 times [2021-11-12 23:42:45,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:45,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382166079] [2021-11-12 23:42:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:45,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:45,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:45,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:45,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:43:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:04,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 3625 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:43:04,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 23:43:05,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 23:43:05,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:05,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382166079] [2021-11-12 23:43:05,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382166079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:05,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:05,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:43:05,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961602115] [2021-11-12 23:43:05,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:05,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:43:05,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:43:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:43:05,476 INFO L87 Difference]: Start difference. First operand has 914 states, 670 states have (on average 1.3761194029850747) internal successors, (922), 701 states have internal predecessors, (922), 196 states have call successors, (196), 47 states have call predecessors, (196), 46 states have return successors, (176), 175 states have call predecessors, (176), 176 states have call successors, (176) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:43:05,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:05,621 INFO L93 Difference]: Finished difference Result 1823 states and 2664 transitions. [2021-11-12 23:43:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:43:05,625 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2021-11-12 23:43:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:05,654 INFO L225 Difference]: With dead ends: 1823 [2021-11-12 23:43:05,654 INFO L226 Difference]: Without dead ends: 887 [2021-11-12 23:43:05,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:43:05,675 INFO L933 BasicCegarLoop]: 1289 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:05,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 10.84ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:43:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-12 23:43:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2021-11-12 23:43:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 665 states have (on average 1.344360902255639) internal successors, (894), 674 states have internal predecessors, (894), 176 states have call successors, (176), 46 states have call predecessors, (176), 45 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2021-11-12 23:43:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1244 transitions. [2021-11-12 23:43:05,828 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1244 transitions. Word has length 84 [2021-11-12 23:43:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:05,829 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1244 transitions. [2021-11-12 23:43:05,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:43:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1244 transitions. [2021-11-12 23:43:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-12 23:43:05,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:05,845 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:05,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:06,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:06,067 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:43:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1244223321, now seen corresponding path program 1 times [2021-11-12 23:43:06,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:06,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64162215] [2021-11-12 23:43:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:06,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:06,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:06,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:06,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:43:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:26,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 3625 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:43:26,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:43:26,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:43:26,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:26,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64162215] [2021-11-12 23:43:26,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64162215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:26,989 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:26,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:43:26,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597628013] [2021-11-12 23:43:26,990 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:26,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:43:26,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:26,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:43:26,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:26,993 INFO L87 Difference]: Start difference. First operand 887 states and 1244 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-12 23:43:29,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:32,264 INFO L93 Difference]: Finished difference Result 3461 states and 4860 transitions. [2021-11-12 23:43:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:43:32,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2021-11-12 23:43:32,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:32,287 INFO L225 Difference]: With dead ends: 3461 [2021-11-12 23:43:32,288 INFO L226 Difference]: Without dead ends: 2586 [2021-11-12 23:43:32,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:32,294 INFO L933 BasicCegarLoop]: 1583 mSDtfsCounter, 3238 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 338 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4609.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3238 SdHoareTripleChecker+Valid, 3653 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.37ms SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5040.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:32,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3238 Valid, 3653 Invalid, 696 Unknown, 0 Unchecked, 31.37ms Time], IncrementalHoareTripleChecker [338 Valid, 357 Invalid, 1 Unknown, 0 Unchecked, 5040.19ms Time] [2021-11-12 23:43:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-11-12 23:43:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2580. [2021-11-12 23:43:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 1938 states have (on average 1.3488132094943242) internal successors, (2614), 1963 states have internal predecessors, (2614), 506 states have call successors, (506), 136 states have call predecessors, (506), 135 states have return successors, (504), 501 states have call predecessors, (504), 504 states have call successors, (504) [2021-11-12 23:43:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3624 transitions. [2021-11-12 23:43:32,441 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3624 transitions. Word has length 84 [2021-11-12 23:43:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:32,442 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 3624 transitions. [2021-11-12 23:43:32,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-12 23:43:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3624 transitions. [2021-11-12 23:43:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-12 23:43:32,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:32,445 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:32,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:32,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:32,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:43:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1059971624, now seen corresponding path program 1 times [2021-11-12 23:43:32,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:32,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013119135] [2021-11-12 23:43:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:32,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:32,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:32,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:32,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:43:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:53,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 3648 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:43:53,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:43:53,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:43:54,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:54,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013119135] [2021-11-12 23:43:54,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013119135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:54,093 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:54,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-12 23:43:54,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428317032] [2021-11-12 23:43:54,093 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:54,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:43:54,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:43:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:43:54,095 INFO L87 Difference]: Start difference. First operand 2580 states and 3624 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:43:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:54,334 INFO L93 Difference]: Finished difference Result 7712 states and 10938 transitions. [2021-11-12 23:43:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:43:54,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 90 [2021-11-12 23:43:54,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:54,386 INFO L225 Difference]: With dead ends: 7712 [2021-11-12 23:43:54,387 INFO L226 Difference]: Without dead ends: 5141 [2021-11-12 23:43:54,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:43:54,409 INFO L933 BasicCegarLoop]: 1412 mSDtfsCounter, 1191 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.69ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:54,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 2652 Invalid, 8 Unknown, 0 Unchecked, 13.69ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 31.94ms Time] [2021-11-12 23:43:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5141 states. [2021-11-12 23:43:54,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5141 to 5136. [2021-11-12 23:43:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5136 states, 3859 states have (on average 1.3487950246177767) internal successors, (5205), 3908 states have internal predecessors, (5205), 1006 states have call successors, (1006), 271 states have call predecessors, (1006), 270 states have return successors, (1055), 998 states have call predecessors, (1055), 1004 states have call successors, (1055) [2021-11-12 23:43:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5136 states to 5136 states and 7266 transitions. [2021-11-12 23:43:54,701 INFO L78 Accepts]: Start accepts. Automaton has 5136 states and 7266 transitions. Word has length 90 [2021-11-12 23:43:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:54,702 INFO L470 AbstractCegarLoop]: Abstraction has 5136 states and 7266 transitions. [2021-11-12 23:43:54,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:43:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 5136 states and 7266 transitions. [2021-11-12 23:43:54,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-12 23:43:54,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:54,714 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:54,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:54,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:54,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:43:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1482268491, now seen corresponding path program 1 times [2021-11-12 23:43:54,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:54,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112082195] [2021-11-12 23:43:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:54,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:54,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:54,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:54,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:44:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:15,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 3773 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:44:15,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:44:16,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:44:16,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:16,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112082195] [2021-11-12 23:44:16,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112082195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:16,490 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:16,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:44:16,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290514305] [2021-11-12 23:44:16,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:16,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:44:16,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:16,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:44:16,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:44:16,492 INFO L87 Difference]: Start difference. First operand 5136 states and 7266 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:44:17,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:17,417 INFO L93 Difference]: Finished difference Result 15226 states and 21500 transitions. [2021-11-12 23:44:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:44:17,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2021-11-12 23:44:17,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:17,497 INFO L225 Difference]: With dead ends: 15226 [2021-11-12 23:44:17,497 INFO L226 Difference]: Without dead ends: 10102 [2021-11-12 23:44:17,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:44:17,524 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 1187 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 515.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 612.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:17,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 2617 Invalid, 23 Unknown, 0 Unchecked, 7.81ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 612.28ms Time] [2021-11-12 23:44:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10102 states. [2021-11-12 23:44:18,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10102 to 10090. [2021-11-12 23:44:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10090 states, 7581 states have (on average 1.3454689354966363) internal successors, (10200), 7680 states have internal predecessors, (10200), 1968 states have call successors, (1968), 541 states have call predecessors, (1968), 540 states have return successors, (2065), 1952 states have call predecessors, (2065), 1966 states have call successors, (2065) [2021-11-12 23:44:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10090 states to 10090 states and 14233 transitions. [2021-11-12 23:44:18,154 INFO L78 Accepts]: Start accepts. Automaton has 10090 states and 14233 transitions. Word has length 117 [2021-11-12 23:44:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:18,155 INFO L470 AbstractCegarLoop]: Abstraction has 10090 states and 14233 transitions. [2021-11-12 23:44:18,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:44:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 10090 states and 14233 transitions. [2021-11-12 23:44:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-12 23:44:18,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:18,160 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:18,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:18,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:18,375 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1308063919, now seen corresponding path program 1 times [2021-11-12 23:44:18,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:18,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572372693] [2021-11-12 23:44:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:18,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:18,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:18,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:18,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:44:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:38,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:44:38,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:44:39,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:44:39,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:39,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572372693] [2021-11-12 23:44:39,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572372693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:39,499 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:39,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:44:39,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731706112] [2021-11-12 23:44:39,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:39,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:44:39,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:44:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:44:39,501 INFO L87 Difference]: Start difference. First operand 10090 states and 14233 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:44:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:40,769 INFO L93 Difference]: Finished difference Result 29378 states and 41357 transitions. [2021-11-12 23:44:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:44:40,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 129 [2021-11-12 23:44:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:40,929 INFO L225 Difference]: With dead ends: 29378 [2021-11-12 23:44:40,930 INFO L226 Difference]: Without dead ends: 19300 [2021-11-12 23:44:40,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:44:40,989 INFO L933 BasicCegarLoop]: 1624 mSDtfsCounter, 1171 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 530.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 639.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:40,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 2831 Invalid, 23 Unknown, 0 Unchecked, 8.28ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 639.19ms Time] [2021-11-12 23:44:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19300 states. [2021-11-12 23:44:41,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19300 to 19284. [2021-11-12 23:44:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19284 states, 14465 states have (on average 1.3396474248185275) internal successors, (19378), 14646 states have internal predecessors, (19378), 3774 states have call successors, (3774), 1045 states have call predecessors, (3774), 1044 states have return successors, (3961), 3748 states have call predecessors, (3961), 3772 states have call successors, (3961) [2021-11-12 23:44:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19284 states to 19284 states and 27113 transitions. [2021-11-12 23:44:42,010 INFO L78 Accepts]: Start accepts. Automaton has 19284 states and 27113 transitions. Word has length 129 [2021-11-12 23:44:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:42,010 INFO L470 AbstractCegarLoop]: Abstraction has 19284 states and 27113 transitions. [2021-11-12 23:44:42,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:44:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 19284 states and 27113 transitions. [2021-11-12 23:44:42,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-12 23:44:42,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:42,017 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:42,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:42,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:42,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1772618993, now seen corresponding path program 1 times [2021-11-12 23:44:42,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:42,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778991632] [2021-11-12 23:44:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:42,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:42,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:42,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:42,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:45:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:02,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 3909 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:02,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-12 23:45:03,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 23:45:03,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:03,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778991632] [2021-11-12 23:45:03,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778991632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:03,808 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:03,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:45:03,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99555509] [2021-11-12 23:45:03,808 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:03,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:45:03,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:03,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:45:03,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:45:03,809 INFO L87 Difference]: Start difference. First operand 19284 states and 27113 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 23:45:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:05,256 INFO L93 Difference]: Finished difference Result 52486 states and 73600 transitions. [2021-11-12 23:45:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:45:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 165 [2021-11-12 23:45:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:05,445 INFO L225 Difference]: With dead ends: 52486 [2021-11-12 23:45:05,445 INFO L226 Difference]: Without dead ends: 33214 [2021-11-12 23:45:05,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:45:05,547 INFO L933 BasicCegarLoop]: 1623 mSDtfsCounter, 920 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 476.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 579.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:05,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 2845 Invalid, 8 Unknown, 0 Unchecked, 8.29ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 579.15ms Time] [2021-11-12 23:45:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33214 states. [2021-11-12 23:45:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33214 to 33202. [2021-11-12 23:45:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33202 states, 24967 states have (on average 1.3377257980534305) internal successors, (33399), 25210 states have internal predecessors, (33399), 6426 states have call successors, (6426), 1809 states have call predecessors, (6426), 1808 states have return successors, (6643), 6374 states have call predecessors, (6643), 6424 states have call successors, (6643) [2021-11-12 23:45:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33202 states to 33202 states and 46468 transitions. [2021-11-12 23:45:07,531 INFO L78 Accepts]: Start accepts. Automaton has 33202 states and 46468 transitions. Word has length 165 [2021-11-12 23:45:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:07,532 INFO L470 AbstractCegarLoop]: Abstraction has 33202 states and 46468 transitions. [2021-11-12 23:45:07,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 23:45:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 33202 states and 46468 transitions. [2021-11-12 23:45:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-12 23:45:07,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:07,552 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:07,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:07,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:07,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:07,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash 961848686, now seen corresponding path program 1 times [2021-11-12 23:45:08,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:08,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604830420] [2021-11-12 23:45:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:08,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:08,055 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:08,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:45:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:29,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 4027 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:45:29,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-12 23:45:30,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-12 23:45:30,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:30,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604830420] [2021-11-12 23:45:30,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604830420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:30,921 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:30,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:45:30,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213749351] [2021-11-12 23:45:30,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:30,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:45:30,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:45:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:45:30,923 INFO L87 Difference]: Start difference. First operand 33202 states and 46468 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-12 23:45:33,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:34,809 INFO L93 Difference]: Finished difference Result 55927 states and 78293 transitions. [2021-11-12 23:45:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:45:34,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2021-11-12 23:45:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:34,935 INFO L225 Difference]: With dead ends: 55927 [2021-11-12 23:45:34,935 INFO L226 Difference]: Without dead ends: 22689 [2021-11-12 23:45:35,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:45:35,027 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 21 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2571.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.44ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2679.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:35,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 4963 Invalid, 25 Unknown, 0 Unchecked, 11.44ms Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2679.79ms Time] [2021-11-12 23:45:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22689 states. [2021-11-12 23:45:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22689 to 22638. [2021-11-12 23:45:36,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22638 states, 17017 states have (on average 1.3370746900158665) internal successors, (22753), 17184 states have internal predecessors, (22753), 4395 states have call successors, (4395), 1226 states have call predecessors, (4395), 1225 states have return successors, (4539), 4355 states have call predecessors, (4539), 4393 states have call successors, (4539) [2021-11-12 23:45:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22638 states to 22638 states and 31687 transitions. [2021-11-12 23:45:36,278 INFO L78 Accepts]: Start accepts. Automaton has 22638 states and 31687 transitions. Word has length 208 [2021-11-12 23:45:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:36,278 INFO L470 AbstractCegarLoop]: Abstraction has 22638 states and 31687 transitions. [2021-11-12 23:45:36,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-12 23:45:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 22638 states and 31687 transitions. [2021-11-12 23:45:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-12 23:45:36,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:36,294 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:45:36,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:36,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:36,511 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:45:36,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash 303639209, now seen corresponding path program 1 times [2021-11-12 23:45:36,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:36,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698831185] [2021-11-12 23:45:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:36,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:36,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:36,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:36,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:45:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:58,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 4033 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:58,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-12 23:45:59,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-12 23:45:59,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:59,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698831185] [2021-11-12 23:45:59,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698831185] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:59,771 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:59,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:45:59,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083812621] [2021-11-12 23:45:59,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:59,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:45:59,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:45:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:45:59,772 INFO L87 Difference]: Start difference. First operand 22638 states and 31687 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-12 23:46:02,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:46:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:06,350 INFO L93 Difference]: Finished difference Result 66341 states and 92976 transitions. [2021-11-12 23:46:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:46:06,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 210 [2021-11-12 23:46:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:06,673 INFO L225 Difference]: With dead ends: 66341 [2021-11-12 23:46:06,673 INFO L226 Difference]: Without dead ends: 44148 [2021-11-12 23:46:06,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:06,736 INFO L933 BasicCegarLoop]: 2158 mSDtfsCounter, 2746 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 263 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4775.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.71ms SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5202.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:06,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2746 Valid, 4218 Invalid, 633 Unknown, 0 Unchecked, 18.71ms Time], IncrementalHoareTripleChecker [263 Valid, 369 Invalid, 1 Unknown, 0 Unchecked, 5202.45ms Time] [2021-11-12 23:46:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44148 states. [2021-11-12 23:46:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44148 to 44114. [2021-11-12 23:46:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44114 states, 33265 states have (on average 1.3372914474673079) internal successors, (44485), 33576 states have internal predecessors, (44485), 8479 states have call successors, (8479), 2370 states have call predecessors, (8479), 2369 states have return successors, (8755), 8407 states have call predecessors, (8755), 8477 states have call successors, (8755) [2021-11-12 23:46:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44114 states to 44114 states and 61719 transitions. [2021-11-12 23:46:08,971 INFO L78 Accepts]: Start accepts. Automaton has 44114 states and 61719 transitions. Word has length 210 [2021-11-12 23:46:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:08,973 INFO L470 AbstractCegarLoop]: Abstraction has 44114 states and 61719 transitions. [2021-11-12 23:46:08,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-12 23:46:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 44114 states and 61719 transitions. [2021-11-12 23:46:08,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-12 23:46:09,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:09,000 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:46:09,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:09,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:09,218 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:46:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash 913834821, now seen corresponding path program 1 times [2021-11-12 23:46:09,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:09,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081061085] [2021-11-12 23:46:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:09,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:09,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:09,503 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:09,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:46:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:31,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 4057 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:46:31,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-11-12 23:46:32,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-12 23:46:33,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:33,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081061085] [2021-11-12 23:46:33,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081061085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:46:33,402 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:46:33,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:46:33,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187232753] [2021-11-12 23:46:33,402 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:33,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:46:33,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:46:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:33,404 INFO L87 Difference]: Start difference. First operand 44114 states and 61719 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:46:35,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:46:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:39,930 INFO L93 Difference]: Finished difference Result 129409 states and 181332 transitions. [2021-11-12 23:46:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:46:39,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 222 [2021-11-12 23:46:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:40,443 INFO L225 Difference]: With dead ends: 129409 [2021-11-12 23:46:40,445 INFO L226 Difference]: Without dead ends: 85740 [2021-11-12 23:46:40,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:46:40,566 INFO L933 BasicCegarLoop]: 2142 mSDtfsCounter, 2721 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 264 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4229.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2721 SdHoareTripleChecker+Valid, 4196 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.22ms SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4574.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:40,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2721 Valid, 4196 Invalid, 632 Unknown, 0 Unchecked, 11.22ms Time], IncrementalHoareTripleChecker [264 Valid, 367 Invalid, 1 Unknown, 0 Unchecked, 4574.97ms Time] [2021-11-12 23:46:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85740 states. [2021-11-12 23:46:43,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85740 to 85650. [2021-11-12 23:46:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85650 states, 64817 states have (on average 1.3377508986839872) internal successors, (86709), 65368 states have internal predecessors, (86709), 16299 states have call successors, (16299), 4534 states have call predecessors, (16299), 4533 states have return successors, (16819), 16179 states have call predecessors, (16819), 16297 states have call successors, (16819) [2021-11-12 23:46:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85650 states to 85650 states and 119827 transitions. [2021-11-12 23:46:44,493 INFO L78 Accepts]: Start accepts. Automaton has 85650 states and 119827 transitions. Word has length 222 [2021-11-12 23:46:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:44,494 INFO L470 AbstractCegarLoop]: Abstraction has 85650 states and 119827 transitions. [2021-11-12 23:46:44,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-12 23:46:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand 85650 states and 119827 transitions. [2021-11-12 23:46:44,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-12 23:46:44,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:44,524 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 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] [2021-11-12 23:46:44,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:44,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:44,747 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:46:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:44,747 INFO L85 PathProgramCache]: Analyzing trace with hash -723866641, now seen corresponding path program 1 times [2021-11-12 23:46:44,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:44,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209561310] [2021-11-12 23:46:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:44,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:44,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:44,761 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:44,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:47:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:07,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 4092 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:47:07,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-12 23:47:08,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-12 23:47:08,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:08,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209561310] [2021-11-12 23:47:08,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209561310] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:08,953 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:08,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 23:47:08,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434651851] [2021-11-12 23:47:08,953 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:08,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:47:08,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:08,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:47:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:47:08,955 INFO L87 Difference]: Start difference. First operand 85650 states and 119827 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 23:47:11,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:47:13,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:47:20,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:20,821 INFO L93 Difference]: Finished difference Result 216969 states and 303230 transitions. [2021-11-12 23:47:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 23:47:20,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 229 [2021-11-12 23:47:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:21,415 INFO L225 Difference]: With dead ends: 216969 [2021-11-12 23:47:21,415 INFO L226 Difference]: Without dead ends: 131764 [2021-11-12 23:47:21,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:47:21,587 INFO L933 BasicCegarLoop]: 2595 mSDtfsCounter, 2439 mSDsluCounter, 18780 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6739.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2453 SdHoareTripleChecker+Valid, 21375 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.31ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7065.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:21,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2453 Valid, 21375 Invalid, 576 Unknown, 0 Unchecked, 41.31ms Time], IncrementalHoareTripleChecker [45 Valid, 529 Invalid, 2 Unknown, 0 Unchecked, 7065.72ms Time] [2021-11-12 23:47:21,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131764 states. [2021-11-12 23:47:25,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131764 to 85866. [2021-11-12 23:47:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85866 states, 65001 states have (on average 1.3367948185412533) internal successors, (86893), 65552 states have internal predecessors, (86893), 16299 states have call successors, (16299), 4534 states have call predecessors, (16299), 4565 states have return successors, (16859), 16211 states have call predecessors, (16859), 16297 states have call successors, (16859) [2021-11-12 23:47:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85866 states to 85866 states and 120051 transitions. [2021-11-12 23:47:26,988 INFO L78 Accepts]: Start accepts. Automaton has 85866 states and 120051 transitions. Word has length 229 [2021-11-12 23:47:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:27,004 INFO L470 AbstractCegarLoop]: Abstraction has 85866 states and 120051 transitions. [2021-11-12 23:47:27,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 8 states have internal predecessors, (112), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 23:47:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 85866 states and 120051 transitions. [2021-11-12 23:47:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-12 23:47:27,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:27,087 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:27,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:27,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:27,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash 19633893, now seen corresponding path program 1 times [2021-11-12 23:47:27,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:27,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472179632] [2021-11-12 23:47:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:27,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:27,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:27,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:27,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:47:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:50,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 4169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:47:50,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:47:51,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:47:52,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:52,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472179632] [2021-11-12 23:47:52,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472179632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:52,630 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:52,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-12 23:47:52,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590529607] [2021-11-12 23:47:52,631 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:52,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:47:52,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:47:52,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:47:52,633 INFO L87 Difference]: Start difference. First operand 85866 states and 120051 transitions. Second operand has 9 states, 7 states have (on average 15.428571428571429) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 23:47:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:55,971 INFO L93 Difference]: Finished difference Result 172494 states and 241440 transitions. [2021-11-12 23:47:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:47:55,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 15.428571428571429) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 258 [2021-11-12 23:47:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:56,329 INFO L225 Difference]: With dead ends: 172494 [2021-11-12 23:47:56,329 INFO L226 Difference]: Without dead ends: 85995 [2021-11-12 23:47:56,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:47:56,561 INFO L933 BasicCegarLoop]: 1236 mSDtfsCounter, 6 mSDsluCounter, 6156 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 265.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7392 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.74ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 288.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:56,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7392 Invalid, 67 Unknown, 0 Unchecked, 9.74ms Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 288.79ms Time] [2021-11-12 23:47:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85995 states. [2021-11-12 23:47:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85995 to 85995. [2021-11-12 23:47:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85995 states, 65130 states have (on average 1.336127744510978) internal successors, (87022), 65681 states have internal predecessors, (87022), 16299 states have call successors, (16299), 4534 states have call predecessors, (16299), 4565 states have return successors, (16859), 16211 states have call predecessors, (16859), 16297 states have call successors, (16859) [2021-11-12 23:48:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85995 states to 85995 states and 120180 transitions. [2021-11-12 23:48:00,033 INFO L78 Accepts]: Start accepts. Automaton has 85995 states and 120180 transitions. Word has length 258 [2021-11-12 23:48:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:00,034 INFO L470 AbstractCegarLoop]: Abstraction has 85995 states and 120180 transitions. [2021-11-12 23:48:00,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 15.428571428571429) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 23:48:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 85995 states and 120180 transitions. [2021-11-12 23:48:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-12 23:48:00,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:00,059 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:00,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:00,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:48:00,275 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:00,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1355053615, now seen corresponding path program 1 times [2021-11-12 23:48:00,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:00,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614907619] [2021-11-12 23:48:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:00,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:00,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:00,289 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:00,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:48:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:23,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 4174 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:48:23,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:48:24,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:48:25,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:48:25,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614907619] [2021-11-12 23:48:25,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614907619] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:48:25,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [383318877] [2021-11-12 23:48:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:25,987 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:25,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:48:25,989 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:48:25,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 23:48:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:48:29,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 4174 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:48:29,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:48:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-12 23:48:30,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:48:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-12 23:48:32,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [383318877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:48:32,030 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:48:32,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [7, 7] total 12 [2021-11-12 23:48:32,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825054421] [2021-11-12 23:48:32,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:48:32,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:48:32,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:48:32,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:48:32,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:48:32,032 INFO L87 Difference]: Start difference. First operand 85995 states and 120180 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-12 23:48:34,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:48:34,649 INFO L93 Difference]: Finished difference Result 160452 states and 223865 transitions. [2021-11-12 23:48:34,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:48:34,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 259 [2021-11-12 23:48:34,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:48:34,938 INFO L225 Difference]: With dead ends: 160452 [2021-11-12 23:48:34,939 INFO L226 Difference]: Without dead ends: 74903 [2021-11-12 23:48:35,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1021 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:48:35,142 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 921 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:48:35,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 1026 Invalid, 1 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 3.77ms Time] [2021-11-12 23:48:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74903 states. [2021-11-12 23:48:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74903 to 74903. [2021-11-12 23:48:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74903 states, 57046 states have (on average 1.3341513866002874) internal successors, (76108), 57277 states have internal predecessors, (76108), 13989 states have call successors, (13989), 3836 states have call predecessors, (13989), 3867 states have return successors, (14147), 13901 states have call predecessors, (14147), 13987 states have call successors, (14147) [2021-11-12 23:48:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74903 states to 74903 states and 104244 transitions. [2021-11-12 23:48:38,337 INFO L78 Accepts]: Start accepts. Automaton has 74903 states and 104244 transitions. Word has length 259 [2021-11-12 23:48:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:48:38,338 INFO L470 AbstractCegarLoop]: Abstraction has 74903 states and 104244 transitions. [2021-11-12 23:48:38,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-12 23:48:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 74903 states and 104244 transitions. [2021-11-12 23:48:38,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-12 23:48:38,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:48:38,370 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:38,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-12 23:48:38,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:48:38,787 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:48:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:48:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1123532570, now seen corresponding path program 1 times [2021-11-12 23:48:38,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:48:38,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934013709] [2021-11-12 23:48:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:48:38,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:48:38,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:48:38,800 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:48:38,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:49:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:01,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 4176 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:49:02,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:49:03,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:49:04,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:04,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934013709] [2021-11-12 23:49:04,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934013709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:49:04,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1492237920] [2021-11-12 23:49:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:04,172 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:49:04,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:49:04,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-12 23:49:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:07,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 4176 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:49:07,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-12 23:49:08,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-12 23:49:09,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1492237920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:49:09,106 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:49:09,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-12 23:49:09,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703330777] [2021-11-12 23:49:09,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:49:09,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:49:09,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:49:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:49:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:49:09,109 INFO L87 Difference]: Start difference. First operand 74903 states and 104244 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:49:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:49:11,489 INFO L93 Difference]: Finished difference Result 149424 states and 207993 transitions. [2021-11-12 23:49:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:49:11,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 269 [2021-11-12 23:49:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:49:11,714 INFO L225 Difference]: With dead ends: 149424 [2021-11-12 23:49:11,714 INFO L226 Difference]: Without dead ends: 74967 [2021-11-12 23:49:11,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:49:11,853 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 0 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:49:11,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2047 Invalid, 6 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 49.19ms Time] [2021-11-12 23:49:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74967 states. [2021-11-12 23:49:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74967 to 74967. [2021-11-12 23:49:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74967 states, 57110 states have (on average 1.3337769217299948) internal successors, (76172), 57341 states have internal predecessors, (76172), 13989 states have call successors, (13989), 3836 states have call predecessors, (13989), 3867 states have return successors, (14147), 13901 states have call predecessors, (14147), 13987 states have call successors, (14147) [2021-11-12 23:49:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74967 states to 74967 states and 104308 transitions. [2021-11-12 23:49:15,566 INFO L78 Accepts]: Start accepts. Automaton has 74967 states and 104308 transitions. Word has length 269 [2021-11-12 23:49:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:49:15,567 INFO L470 AbstractCegarLoop]: Abstraction has 74967 states and 104308 transitions. [2021-11-12 23:49:15,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:49:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 74967 states and 104308 transitions. [2021-11-12 23:49:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-12 23:49:15,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:49:15,597 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:49:15,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:15,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:49:16,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:16,023 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:49:16,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:49:16,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1326067560, now seen corresponding path program 1 times [2021-11-12 23:49:16,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:49:16,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033600451] [2021-11-12 23:49:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:16,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:49:16,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:49:16,037 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:49:16,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:49:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:39,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 4178 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:49:39,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:49:39,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:49:41,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:49:41,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033600451] [2021-11-12 23:49:41,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033600451] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:49:41,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1902179954] [2021-11-12 23:49:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:41,162 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:49:41,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:49:41,164 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:49:41,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-12 23:49:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:49:57,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 4178 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:49:57,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:49:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:49:58,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:49:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-11-12 23:49:59,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1902179954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:49:59,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183454909] [2021-11-12 23:49:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:49:59,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:49:59,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:49:59,302 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:49:59,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a61df04-abae-41a3-a458-45083b930a10/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-12 23:50:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:50:02,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 4178 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:50:02,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:50:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-12 23:50:03,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:50:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-12 23:50:04,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183454909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:50:04,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:50:04,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7, 7, 7] total 15 [2021-11-12 23:50:04,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707868531] [2021-11-12 23:50:04,262 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:50:04,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:50:04,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:50:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:50:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:50:04,264 INFO L87 Difference]: Start difference. First operand 74967 states and 104308 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:50:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:50:11,074 INFO L93 Difference]: Finished difference Result 262589 states and 380488 transitions. [2021-11-12 23:50:11,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:50:11,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 269 [2021-11-12 23:50:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:50:11,695 INFO L225 Difference]: With dead ends: 262589 [2021-11-12 23:50:11,695 INFO L226 Difference]: Without dead ends: 188068 [2021-11-12 23:50:11,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1610 GetRequests, 1596 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:50:11,872 INFO L933 BasicCegarLoop]: 2375 mSDtfsCounter, 1417 mSDsluCounter, 8221 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 287.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 10596 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.09ms SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 339.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:50:11,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 10596 Invalid, 194 Unknown, 0 Unchecked, 16.09ms Time], IncrementalHoareTripleChecker [172 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 339.56ms Time] [2021-11-12 23:50:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188068 states.