./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-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9 --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 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:42:55,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:42:55,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:42:55,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:42:55,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:42:55,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:42:55,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:42:55,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:42:55,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:42:55,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:42:55,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:42:55,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:42:55,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:42:55,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:42:55,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:42:55,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:42:55,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:42:55,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:42:55,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:42:55,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:42:55,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:42:55,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:42:55,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:42:55,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:42:55,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:42:55,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:42:55,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:42:55,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:42:55,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:42:55,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:42:55,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:42:55,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:42:55,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:42:55,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:42:55,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:42:55,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:42:55,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:42:55,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:42:55,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:42:55,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:42:55,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:42:55,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:42:55,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:42:55,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:42:55,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:42:55,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:42:55,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:42:55,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:42:55,398 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:42:55,399 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:42:55,399 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:42:55,399 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:42:55,400 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:42:55,400 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:42:55,400 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:42:55,401 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:42:55,401 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:42:55,401 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:42:55,401 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:42:55,402 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:42:55,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:42:55,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:42:55,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:42:55,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:42:55,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:42:55,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:42:55,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:42:55,404 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:42:55,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:42:55,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:42:55,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:42:55,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:42:55,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:42:55,406 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:42:55,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:42:55,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:42:55,407 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:42:55,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:42:55,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:42:55,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:42:55,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a [2022-11-20 20:42:55,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:42:55,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:42:55,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:42:55,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:42:55,763 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:42:55,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2022-11-20 20:42:58,917 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:42:59,620 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:42:59,621 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2022-11-20 20:42:59,685 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/data/11d872e53/f6cc5e3bbfd142f587b36fcba4a2042c/FLAGa95c7562d [2022-11-20 20:42:59,706 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/data/11d872e53/f6cc5e3bbfd142f587b36fcba4a2042c [2022-11-20 20:42:59,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:42:59,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:42:59,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:42:59,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:42:59,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:42:59,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:42:59" (1/1) ... [2022-11-20 20:42:59,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79dd2e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:42:59, skipping insertion in model container [2022-11-20 20:42:59,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:42:59" (1/1) ... [2022-11-20 20:42:59,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:42:59,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:43:02,700 WARN L237 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_ebc30981-7d7c-40eb-b77a-ca0631d60417/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i[368085,368098] [2022-11-20 20:43:02,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:43:02,851 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:43:03,728 WARN L237 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_ebc30981-7d7c-40eb-b77a-ca0631d60417/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i[368085,368098] [2022-11-20 20:43:03,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:43:03,878 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:43:03,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03 WrapperNode [2022-11-20 20:43:03,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:43:03,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:43:03,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:43:03,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:43:03,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,333 INFO L138 Inliner]: procedures = 329, calls = 4504, calls flagged for inlining = 148, calls inlined = 145, statements flattened = 9045 [2022-11-20 20:43:04,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:43:04,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:43:04,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:43:04,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:43:04,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,763 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:43:04,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:43:04,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:43:04,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:43:04,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (1/1) ... [2022-11-20 20:43:04,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:43:04,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:04,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:43:04,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc30981-7d7c-40eb-b77a-ca0631d60417/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:43:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure ips_detect [2022-11-20 20:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_detect [2022-11-20 20:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure ips_done [2022-11-20 20:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_done [2022-11-20 20:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure ips_removeq_copp [2022-11-20 20:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_removeq_copp [2022-11-20 20:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure ips_eh_abort [2022-11-20 20:43:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_eh_abort [2022-11-20 20:43:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2022-11-20 20:43:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2022-11-20 20:43:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:43:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:43:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 20:43:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 20:43:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 20:43:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 20:43:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_cmd [2022-11-20 20:43:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_cmd [2022-11-20 20:43:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure seq_puts [2022-11-20 20:43:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_puts [2022-11-20 20:43:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 20:43:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 20:43:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure ips_allocatescbs [2022-11-20 20:43:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_allocatescbs [2022-11-20 20:43:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure do_ipsintr [2022-11-20 20:43:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure do_ipsintr [2022-11-20 20:43:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_copperhead [2022-11-20 20:43:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_copperhead [2022-11-20 20:43:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-20 20:43:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-20 20:43:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure le32_add_cpu [2022-11-20 20:43:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure le32_add_cpu [2022-11-20 20:43:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 20:43:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 20:43:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure ips_freescb [2022-11-20 20:43:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_freescb [2022-11-20 20:43:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 20:43:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 20:43:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure ips_free_flash_copperhead [2022-11-20 20:43:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_free_flash_copperhead [2022-11-20 20:43:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:43:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:43:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ips_isintr_morpheus [2022-11-20 20:43:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_isintr_morpheus [2022-11-20 20:43:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ips_removeq_scb_head [2022-11-20 20:43:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_removeq_scb_head [2022-11-20 20:43:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ips_slave_configure [2022-11-20 20:43:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_slave_configure [2022-11-20 20:43:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 20:43:05,068 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 20:43:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2022-11-20 20:43:05,068 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2022-11-20 20:43:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_5 [2022-11-20 20:43:05,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_5 [2022-11-20 20:43:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-20 20:43:05,068 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-20 20:43:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure ips_putq_scb_head [2022-11-20 20:43:05,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_putq_scb_head [2022-11-20 20:43:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 20:43:05,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 20:43:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure ips_hainit [2022-11-20 20:43:05,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_hainit [2022-11-20 20:43:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 20:43:05,069 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 20:43:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 20:43:05,069 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 20:43:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-20 20:43:05,069 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-20 20:43:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:43:05,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:43:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure ips_wait [2022-11-20 20:43:05,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_wait [2022-11-20 20:43:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-11-20 20:43:05,070 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-11-20 20:43:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure ips_register_scsi [2022-11-20 20:43:05,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_register_scsi [2022-11-20 20:43:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure sdev_id [2022-11-20 20:43:05,073 INFO L138 BoogieDeclarations]: Found implementation of procedure sdev_id [2022-11-20 20:43:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure ips_readwrite_page5 [2022-11-20 20:43:05,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_readwrite_page5 [2022-11-20 20:43:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-20 20:43:05,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-20 20:43:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flush_and_reset [2022-11-20 20:43:05,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flush_and_reset [2022-11-20 20:43:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_wait [2022-11-20 20:43:05,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_wait [2022-11-20 20:43:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure ips_removeq_wait [2022-11-20 20:43:05,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_removeq_wait [2022-11-20 20:43:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_morpheus [2022-11-20 20:43:05,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_morpheus [2022-11-20 20:43:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~uint32_t~0~X~~uint32_t~0~TO~int [2022-11-20 20:43:05,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~uint32_t~0~X~~uint32_t~0~TO~int [2022-11-20 20:43:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:43:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure touch_nmi_watchdog [2022-11-20 20:43:05,077 INFO L138 BoogieDeclarations]: Found implementation of procedure touch_nmi_watchdog [2022-11-20 20:43:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure ips_online [2022-11-20 20:43:05,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_online [2022-11-20 20:43:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-20 20:43:05,078 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-20 20:43:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue_lck [2022-11-20 20:43:05,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue_lck [2022-11-20 20:43:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:43:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 20:43:05,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 20:43:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-20 20:43:05,079 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-20 20:43:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:43:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:43:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure ips_release [2022-11-20 20:43:05,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_release [2022-11-20 20:43:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-11-20 20:43:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-20 20:43:05,085 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-20 20:43:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 20:43:05,085 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 20:43:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 20:43:05,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 20:43:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 20:43:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 20:43:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure ips_isinit_morpheus [2022-11-20 20:43:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_isinit_morpheus [2022-11-20 20:43:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure ips_next [2022-11-20 20:43:05,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_next [2022-11-20 20:43:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 20:43:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 20:43:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-20 20:43:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-20 20:43:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 20:43:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure ips_clear_adapter [2022-11-20 20:43:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_clear_adapter [2022-11-20 20:43:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure ips_shift_controllers [2022-11-20 20:43:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_shift_controllers [2022-11-20 20:43:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_bios [2022-11-20 20:43:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_bios [2022-11-20 20:43:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 20:43:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 20:43:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_subsystem_parameters [2022-11-20 20:43:05,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_subsystem_parameters [2022-11-20 20:43:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 20:43:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure ips_write_driver_status [2022-11-20 20:43:05,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_write_driver_status [2022-11-20 20:43:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:43:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 20:43:05,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 20:43:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure ips_removeq_copp_head [2022-11-20 20:43:05,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_removeq_copp_head [2022-11-20 20:43:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure ips_free [2022-11-20 20:43:05,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_free [2022-11-20 20:43:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-20 20:43:05,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-20 20:43:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase2 [2022-11-20 20:43:05,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase2 [2022-11-20 20:43:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_adapter_status [2022-11-20 20:43:05,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_adapter_status [2022-11-20 20:43:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase1 [2022-11-20 20:43:05,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase1 [2022-11-20 20:43:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:43:05,101 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:43:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure ips_scmd_buf_read [2022-11-20 20:43:05,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_scmd_buf_read [2022-11-20 20:43:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure ips_abort_init [2022-11-20 20:43:05,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_abort_init [2022-11-20 20:43:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure ipsintr_done [2022-11-20 20:43:05,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ipsintr_done [2022-11-20 20:43:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure ips_deallocatescbs [2022-11-20 20:43:05,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_deallocatescbs [2022-11-20 20:43:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-20 20:43:05,102 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-20 20:43:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 20:43:05,102 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 20:43:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_scb [2022-11-20 20:43:05,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_scb [2022-11-20 20:43:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure ips_insert_device [2022-11-20 20:43:05,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_insert_device [2022-11-20 20:43:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_config [2022-11-20 20:43:05,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_config [2022-11-20 20:43:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_reset [2022-11-20 20:43:05,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_reset [2022-11-20 20:43:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 20:43:05,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 20:43:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure ips_usrcmd [2022-11-20 20:43:05,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_usrcmd [2022-11-20 20:43:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:43:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 20:43:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 20:43:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure ips_make_passthru [2022-11-20 20:43:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_make_passthru [2022-11-20 20:43:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-20 20:43:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-20 20:43:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead_memio [2022-11-20 20:43:05,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead_memio [2022-11-20 20:43:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-11-20 20:43:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-11-20 20:43:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure ips_removeq_wait_head [2022-11-20 20:43:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_removeq_wait_head [2022-11-20 20:43:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure ips_eh_reset [2022-11-20 20:43:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_eh_reset [2022-11-20 20:43:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure ips_getscb [2022-11-20 20:43:05,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_getscb [2022-11-20 20:43:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure ips_info [2022-11-20 20:43:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_info [2022-11-20 20:43:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 20:43:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 20:43:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2022-11-20 20:43:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2022-11-20 20:43:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~uint32_t~0 [2022-11-20 20:43:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~uint32_t~0 [2022-11-20 20:43:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure __ips_eh_reset [2022-11-20 20:43:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __ips_eh_reset [2022-11-20 20:43:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 20:43:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 20:43:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:43:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2022-11-20 20:43:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2022-11-20 20:43:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure ips_scmd_buf_write [2022-11-20 20:43:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_scmd_buf_write [2022-11-20 20:43:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 20:43:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 20:43:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure ips_fix_ffdc_time [2022-11-20 20:43:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_fix_ffdc_time [2022-11-20 20:43:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-11-20 20:43:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-11-20 20:43:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:43:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reqsen [2022-11-20 20:43:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reqsen [2022-11-20 20:43:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 20:43:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 20:43:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:43:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 20:43:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-20 20:43:05,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-20 20:43:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:43:05,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:43:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-20 20:43:05,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-20 20:43:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-20 20:43:05,113 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-20 20:43:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-20 20:43:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-20 20:43:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure ips_fill_scb_sg_single [2022-11-20 20:43:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_fill_scb_sg_single [2022-11-20 20:43:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure ips_remove_device [2022-11-20 20:43:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_remove_device [2022-11-20 20:43:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure ips_show_info [2022-11-20 20:43:05,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_show_info [2022-11-20 20:43:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure ips_chkstatus [2022-11-20 20:43:05,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_chkstatus [2022-11-20 20:43:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure ips_is_passthru [2022-11-20 20:43:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_is_passthru [2022-11-20 20:43:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue [2022-11-20 20:43:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue [2022-11-20 20:43:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_morpheus [2022-11-20 20:43:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_morpheus [2022-11-20 20:43:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_time [2022-11-20 20:43:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_time [2022-11-20 20:43:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure ips_biosparam [2022-11-20 20:43:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_biosparam [2022-11-20 20:43:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure sdev_channel [2022-11-20 20:43:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure sdev_channel [2022-11-20 20:43:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure ips_get_bios_version [2022-11-20 20:43:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_get_bios_version [2022-11-20 20:43:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead [2022-11-20 20:43:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead [2022-11-20 20:43:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 20:43:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 20:43:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 20:43:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 20:43:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 20:43:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 20:43:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-20 20:43:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-20 20:43:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2022-11-20 20:43:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2022-11-20 20:43:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-20 20:43:05,126 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-20 20:43:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_copperhead [2022-11-20 20:43:05,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_copperhead [2022-11-20 20:43:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:43:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-20 20:43:05,126 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-20 20:43:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 20:43:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 20:43:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-20 20:43:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-20 20:43:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-20 20:43:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:43:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:43:06,485 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:43:06,488 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:43:08,903 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 20:48:27,230 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:48:33,153 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:48:33,153 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 20:48:33,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:48:33 BoogieIcfgContainer [2022-11-20 20:48:33,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:48:33,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:48:33,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:48:33,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:48:33,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:42:59" (1/3) ... [2022-11-20 20:48:33,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6710c53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:48:33, skipping insertion in model container [2022-11-20 20:48:33,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:03" (2/3) ... [2022-11-20 20:48:33,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6710c53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:48:33, skipping insertion in model container [2022-11-20 20:48:33,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:48:33" (3/3) ... [2022-11-20 20:48:33,168 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2022-11-20 20:48:33,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:48:33,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:48:33,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:48:33,312 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@485a9b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:48:33,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:48:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 2528 states, 1661 states have (on average 1.3816977724262491) internal successors, (2295), 1780 states have internal predecessors, (2295), 738 states have call successors, (738), 134 states have call predecessors, (738), 133 states have return successors, (729), 717 states have call predecessors, (729), 729 states have call successors, (729) [2022-11-20 20:48:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-20 20:48:33,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:33,360 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:48:33,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:33,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2018844585, now seen corresponding path program 1 times [2022-11-20 20:48:33,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:48:33,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628787300] [2022-11-20 20:48:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:48:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 20:48:35,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:48:35,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628787300] [2022-11-20 20:48:35,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628787300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:35,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:35,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:48:35,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936588813] [2022-11-20 20:48:35,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:48:35,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:48:35,549 INFO L87 Difference]: Start difference. First operand has 2528 states, 1661 states have (on average 1.3816977724262491) internal successors, (2295), 1780 states have internal predecessors, (2295), 738 states have call successors, (738), 134 states have call predecessors, (738), 133 states have return successors, (729), 717 states have call predecessors, (729), 729 states have call successors, (729) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 20:48:37,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:40,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:42,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:43,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:45,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:48,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:51,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:57,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:00,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:03,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:06,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:09,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:11,276 INFO L93 Difference]: Finished difference Result 7363 states and 11197 transitions. [2022-11-20 20:49:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:49:11,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2022-11-20 20:49:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:11,348 INFO L225 Difference]: With dead ends: 7363 [2022-11-20 20:49:11,349 INFO L226 Difference]: Without dead ends: 4815 [2022-11-20 20:49:11,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:49:11,384 INFO L413 NwaCegarLoop]: 4805 mSDtfsCounter, 3474 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3482 SdHoareTripleChecker+Valid, 8200 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:11,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3482 Valid, 8200 Invalid, 725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 713 Invalid, 8 Unknown, 0 Unchecked, 35.2s Time] [2022-11-20 20:49:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states. [2022-11-20 20:49:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 4811. [2022-11-20 20:49:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4811 states, 3154 states have (on average 1.3719086873811033) internal successors, (4327), 3359 states have internal predecessors, (4327), 1396 states have call successors, (1396), 261 states have call predecessors, (1396), 260 states have return successors, (1403), 1370 states have call predecessors, (1403), 1395 states have call successors, (1403) [2022-11-20 20:49:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 7126 transitions. [2022-11-20 20:49:11,846 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 7126 transitions. Word has length 144 [2022-11-20 20:49:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:11,849 INFO L495 AbstractCegarLoop]: Abstraction has 4811 states and 7126 transitions. [2022-11-20 20:49:11,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 20:49:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 7126 transitions. [2022-11-20 20:49:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 20:49:11,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:11,872 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:49:11,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:49:11,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:11,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1185627857, now seen corresponding path program 1 times [2022-11-20 20:49:11,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:49:11,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681678503] [2022-11-20 20:49:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:11,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:49:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-11-20 20:49:13,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:49:13,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681678503] [2022-11-20 20:49:13,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681678503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:13,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:49:13,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:49:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337470537] [2022-11-20 20:49:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:13,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:49:13,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:49:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:49:13,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:49:13,582 INFO L87 Difference]: Start difference. First operand 4811 states and 7126 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-20 20:49:15,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:18,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:20,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:23,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:25,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:27,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:28,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:29,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:33,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:39,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:43,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:47,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:49,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:51,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:51,359 INFO L93 Difference]: Finished difference Result 9597 states and 14216 transitions. [2022-11-20 20:49:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:49:51,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 167 [2022-11-20 20:49:51,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:51,407 INFO L225 Difference]: With dead ends: 9597 [2022-11-20 20:49:51,407 INFO L226 Difference]: Without dead ends: 4805 [2022-11-20 20:49:51,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:49:51,448 INFO L413 NwaCegarLoop]: 3362 mSDtfsCounter, 1 mSDsluCounter, 6722 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10084 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:51,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10084 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 932 Invalid, 9 Unknown, 0 Unchecked, 37.4s Time] [2022-11-20 20:49:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2022-11-20 20:49:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4805. [2022-11-20 20:49:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4805 states, 3150 states have (on average 1.3717460317460317) internal successors, (4321), 3355 states have internal predecessors, (4321), 1395 states have call successors, (1395), 260 states have call predecessors, (1395), 259 states have return successors, (1402), 1369 states have call predecessors, (1402), 1394 states have call successors, (1402) [2022-11-20 20:49:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 7118 transitions. [2022-11-20 20:49:51,699 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 7118 transitions. Word has length 167 [2022-11-20 20:49:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:51,702 INFO L495 AbstractCegarLoop]: Abstraction has 4805 states and 7118 transitions. [2022-11-20 20:49:51,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-20 20:49:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 7118 transitions. [2022-11-20 20:49:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 20:49:51,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:51,712 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:49:51,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:49:51,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:51,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:51,723 INFO L85 PathProgramCache]: Analyzing trace with hash -512377335, now seen corresponding path program 1 times [2022-11-20 20:49:51,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:49:51,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603896104] [2022-11-20 20:49:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:51,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:49:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 20:49:53,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:49:53,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603896104] [2022-11-20 20:49:53,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603896104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:53,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:49:53,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:49:53,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753636807] [2022-11-20 20:49:53,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:53,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:49:53,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:49:53,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:49:53,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:49:53,259 INFO L87 Difference]: Start difference. First operand 4805 states and 7118 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:49:55,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:58,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:00,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:01,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:04,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:09,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:10,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:11,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:16,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:17,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:18,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:22,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:24,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:25,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:50:25,946 INFO L93 Difference]: Finished difference Result 14259 states and 21133 transitions. [2022-11-20 20:50:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:50:25,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 173 [2022-11-20 20:50:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:50:26,031 INFO L225 Difference]: With dead ends: 14259 [2022-11-20 20:50:26,031 INFO L226 Difference]: Without dead ends: 9481 [2022-11-20 20:50:26,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:50:26,304 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 3492 mSDsluCounter, 3352 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3500 SdHoareTripleChecker+Valid, 7662 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:50:26,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3500 Valid, 7662 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 677 Invalid, 7 Unknown, 0 Unchecked, 32.3s Time] [2022-11-20 20:50:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9481 states. [2022-11-20 20:50:26,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 9472. [2022-11-20 20:50:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9472 states, 6208 states have (on average 1.3722615979381443) internal successors, (8519), 6620 states have internal predecessors, (8519), 2747 states have call successors, (2747), 517 states have call predecessors, (2747), 516 states have return successors, (2775), 2694 states have call predecessors, (2775), 2746 states have call successors, (2775) [2022-11-20 20:50:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9472 states to 9472 states and 14041 transitions. [2022-11-20 20:50:26,816 INFO L78 Accepts]: Start accepts. Automaton has 9472 states and 14041 transitions. Word has length 173 [2022-11-20 20:50:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:50:26,817 INFO L495 AbstractCegarLoop]: Abstraction has 9472 states and 14041 transitions. [2022-11-20 20:50:26,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:50:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9472 states and 14041 transitions. [2022-11-20 20:50:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 20:50:26,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:50:26,832 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:50:26,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:50:26,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:50:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:50:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1585787815, now seen corresponding path program 1 times [2022-11-20 20:50:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:50:26,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140128387] [2022-11-20 20:50:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:26,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:50:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:50:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 20:50:28,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:50:28,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140128387] [2022-11-20 20:50:28,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140128387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:50:28,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:50:28,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:50:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55024686] [2022-11-20 20:50:28,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:50:28,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:50:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:50:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:50:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:50:28,053 INFO L87 Difference]: Start difference. First operand 9472 states and 14041 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:50:30,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:33,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:35,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:38,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:39,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:41,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:42,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:46,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:51,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:56,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:50:58,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:51:00,209 INFO L93 Difference]: Finished difference Result 27971 states and 42342 transitions. [2022-11-20 20:51:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:51:00,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 179 [2022-11-20 20:51:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:51:00,359 INFO L225 Difference]: With dead ends: 27971 [2022-11-20 20:51:00,360 INFO L226 Difference]: Without dead ends: 18526 [2022-11-20 20:51:00,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:51:00,425 INFO L413 NwaCegarLoop]: 5104 mSDtfsCounter, 3572 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3577 SdHoareTripleChecker+Valid, 8508 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:51:00,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3577 Valid, 8508 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 792 Invalid, 8 Unknown, 0 Unchecked, 31.5s Time] [2022-11-20 20:51:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18526 states. [2022-11-20 20:51:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18526 to 18464. [2022-11-20 20:51:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18464 states, 12092 states have (on average 1.3693350975851803) internal successors, (16558), 12904 states have internal predecessors, (16558), 5360 states have call successors, (5360), 1008 states have call predecessors, (5360), 1011 states have return successors, (6334), 5263 states have call predecessors, (6334), 5359 states have call successors, (6334) [2022-11-20 20:51:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18464 states to 18464 states and 28252 transitions. [2022-11-20 20:51:01,740 INFO L78 Accepts]: Start accepts. Automaton has 18464 states and 28252 transitions. Word has length 179 [2022-11-20 20:51:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:51:01,742 INFO L495 AbstractCegarLoop]: Abstraction has 18464 states and 28252 transitions. [2022-11-20 20:51:01,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:51:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 18464 states and 28252 transitions. [2022-11-20 20:51:01,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-20 20:51:01,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:51:01,749 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:51:01,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:51:01,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:51:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:51:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash 423411874, now seen corresponding path program 1 times [2022-11-20 20:51:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:51:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639132530] [2022-11-20 20:51:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:51:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:51:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:51:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-20 20:51:03,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:51:03,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639132530] [2022-11-20 20:51:03,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639132530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:51:03,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:51:03,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:51:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595809550] [2022-11-20 20:51:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:51:03,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:51:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:51:03,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:51:03,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:51:03,307 INFO L87 Difference]: Start difference. First operand 18464 states and 28252 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 20:51:05,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:08,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:10,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:12,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:14,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:17,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:20,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:23,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:26,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:29,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:31,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:51:33,010 INFO L93 Difference]: Finished difference Result 37013 states and 58474 transitions. [2022-11-20 20:51:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:51:33,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 178 [2022-11-20 20:51:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:51:33,134 INFO L225 Difference]: With dead ends: 37013 [2022-11-20 20:51:33,135 INFO L226 Difference]: Without dead ends: 18576 [2022-11-20 20:51:33,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:51:33,268 INFO L413 NwaCegarLoop]: 3360 mSDtfsCounter, 13 mSDsluCounter, 3352 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6712 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:51:33,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6712 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 624 Invalid, 8 Unknown, 0 Unchecked, 28.9s Time] [2022-11-20 20:51:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18576 states. [2022-11-20 20:51:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18576 to 18504. [2022-11-20 20:51:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18504 states, 12126 states have (on average 1.3692891307933366) internal successors, (16604), 12940 states have internal predecessors, (16604), 5364 states have call successors, (5364), 1008 states have call predecessors, (5364), 1013 states have return successors, (6340), 5267 states have call predecessors, (6340), 5363 states have call successors, (6340) [2022-11-20 20:51:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18504 states to 18504 states and 28308 transitions. [2022-11-20 20:51:34,440 INFO L78 Accepts]: Start accepts. Automaton has 18504 states and 28308 transitions. Word has length 178 [2022-11-20 20:51:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:51:34,443 INFO L495 AbstractCegarLoop]: Abstraction has 18504 states and 28308 transitions. [2022-11-20 20:51:34,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 20:51:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 18504 states and 28308 transitions. [2022-11-20 20:51:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-20 20:51:34,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:51:34,451 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:51:34,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:51:34,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:51:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:51:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -834499090, now seen corresponding path program 1 times [2022-11-20 20:51:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:51:34,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787310529] [2022-11-20 20:51:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:51:34,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:51:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:51:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-20 20:51:36,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:51:36,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787310529] [2022-11-20 20:51:36,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787310529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:51:36,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:51:36,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:51:36,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82173210] [2022-11-20 20:51:36,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:51:36,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:51:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:51:36,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:51:36,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:51:36,358 INFO L87 Difference]: Start difference. First operand 18504 states and 28308 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 20:51:38,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:41,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:43,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:45,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:47,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:48,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:50,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:52,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:51:54,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:01,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:05,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:07,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:52:08,500 INFO L93 Difference]: Finished difference Result 36158 states and 58619 transitions. [2022-11-20 20:52:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:52:08,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 180 [2022-11-20 20:52:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:52:08,825 INFO L225 Difference]: With dead ends: 36158 [2022-11-20 20:52:08,826 INFO L226 Difference]: Without dead ends: 36155 [2022-11-20 20:52:08,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:52:08,848 INFO L413 NwaCegarLoop]: 4351 mSDtfsCounter, 3578 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3583 SdHoareTripleChecker+Valid, 7751 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:52:08,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3583 Valid, 7751 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 654 Invalid, 8 Unknown, 0 Unchecked, 31.2s Time] [2022-11-20 20:52:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36155 states. [2022-11-20 20:52:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36155 to 35852. [2022-11-20 20:52:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35852 states, 23552 states have (on average 1.3716032608695652) internal successors, (32304), 25172 states have internal predecessors, (32304), 10342 states have call successors, (10342), 1938 states have call predecessors, (10342), 1957 states have return successors, (15466), 10165 states have call predecessors, (15466), 10341 states have call successors, (15466) [2022-11-20 20:52:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35852 states to 35852 states and 58112 transitions. [2022-11-20 20:52:11,003 INFO L78 Accepts]: Start accepts. Automaton has 35852 states and 58112 transitions. Word has length 180 [2022-11-20 20:52:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:52:11,003 INFO L495 AbstractCegarLoop]: Abstraction has 35852 states and 58112 transitions. [2022-11-20 20:52:11,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 20:52:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 35852 states and 58112 transitions. [2022-11-20 20:52:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-20 20:52:11,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:52:11,258 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:52:11,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:52:11,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:52:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:52:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1780032502, now seen corresponding path program 1 times [2022-11-20 20:52:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:52:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065279672] [2022-11-20 20:52:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:52:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:52:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:52:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 20:52:13,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:52:13,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065279672] [2022-11-20 20:52:13,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065279672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:52:13,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:52:13,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:52:13,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629544540] [2022-11-20 20:52:13,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:52:13,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:52:13,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:52:13,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:52:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:52:13,333 INFO L87 Difference]: Start difference. First operand 35852 states and 58112 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 20:52:15,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:19,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:21,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:23,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:26,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:30,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:32,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:36,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:40,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:46,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:52,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:54,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:52:58,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:52:58,215 INFO L93 Difference]: Finished difference Result 107399 states and 179101 transitions. [2022-11-20 20:52:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:52:58,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 213 [2022-11-20 20:52:58,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:52:59,167 INFO L225 Difference]: With dead ends: 107399 [2022-11-20 20:52:59,168 INFO L226 Difference]: Without dead ends: 71574 [2022-11-20 20:52:59,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:52:59,602 INFO L413 NwaCegarLoop]: 4729 mSDtfsCounter, 3536 mSDsluCounter, 12891 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 7 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 17620 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:52:59,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3541 Valid, 17620 Invalid, 1485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1470 Invalid, 8 Unknown, 0 Unchecked, 41.9s Time] [2022-11-20 20:52:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71574 states. [2022-11-20 20:53:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71574 to 71404. [2022-11-20 20:53:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71404 states, 46928 states have (on average 1.3712921922945789) internal successors, (64352), 50232 states have internal predecessors, (64352), 20542 states have call successors, (20542), 3866 states have call predecessors, (20542), 3933 states have return successors, (35818), 20121 states have call predecessors, (35818), 20541 states have call successors, (35818) [2022-11-20 20:53:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71404 states to 71404 states and 120712 transitions. [2022-11-20 20:53:04,916 INFO L78 Accepts]: Start accepts. Automaton has 71404 states and 120712 transitions. Word has length 213 [2022-11-20 20:53:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:04,917 INFO L495 AbstractCegarLoop]: Abstraction has 71404 states and 120712 transitions. [2022-11-20 20:53:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 20:53:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 71404 states and 120712 transitions. [2022-11-20 20:53:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-20 20:53:05,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:05,033 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:05,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:53:05,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:53:05,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash 957269226, now seen corresponding path program 1 times [2022-11-20 20:53:05,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:05,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570551208] [2022-11-20 20:53:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:05,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 20:53:07,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:07,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570551208] [2022-11-20 20:53:07,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570551208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:07,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:07,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:53:07,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171149904] [2022-11-20 20:53:07,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:07,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:53:07,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:07,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:53:07,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:53:07,154 INFO L87 Difference]: Start difference. First operand 71404 states and 120712 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 20:53:09,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:13,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:15,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:16,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:18,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:20,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:21,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:23,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:27,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:30,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:36,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:41,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:45,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:55,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:57,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:01,169 INFO L93 Difference]: Finished difference Result 176215 states and 299429 transitions. [2022-11-20 20:54:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:54:01,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 214 [2022-11-20 20:54:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:01,926 INFO L225 Difference]: With dead ends: 176215 [2022-11-20 20:54:01,926 INFO L226 Difference]: Without dead ends: 107158 [2022-11-20 20:54:02,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:54:02,531 INFO L413 NwaCegarLoop]: 4941 mSDtfsCounter, 3532 mSDsluCounter, 13313 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 7 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 SdHoareTripleChecker+Valid, 18254 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:02,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3537 Valid, 18254 Invalid, 1542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1526 Invalid, 9 Unknown, 0 Unchecked, 48.7s Time] [2022-11-20 20:54:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107158 states. [2022-11-20 20:54:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107158 to 106956. [2022-11-20 20:54:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106956 states, 70336 states have (on average 1.3710191082802548) internal successors, (96432), 75228 states have internal predecessors, (96432), 30726 states have call successors, (30726), 5794 states have call predecessors, (30726), 5893 states have return successors, (55962), 30141 states have call predecessors, (55962), 30725 states have call successors, (55962) [2022-11-20 20:54:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106956 states to 106956 states and 183120 transitions. [2022-11-20 20:54:08,877 INFO L78 Accepts]: Start accepts. Automaton has 106956 states and 183120 transitions. Word has length 214 [2022-11-20 20:54:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:08,878 INFO L495 AbstractCegarLoop]: Abstraction has 106956 states and 183120 transitions. [2022-11-20 20:54:08,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 20:54:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 106956 states and 183120 transitions. [2022-11-20 20:54:08,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 20:54:08,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:08,955 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:08,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:54:08,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:08,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:08,956 INFO L85 PathProgramCache]: Analyzing trace with hash 578869325, now seen corresponding path program 1 times [2022-11-20 20:54:08,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:08,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329925655] [2022-11-20 20:54:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:08,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 20:54:11,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:11,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329925655] [2022-11-20 20:54:11,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329925655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:11,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:11,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:54:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944936243] [2022-11-20 20:54:11,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:54:11,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:54:11,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:54:11,351 INFO L87 Difference]: Start difference. First operand 106956 states and 183120 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 20:54:13,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:17,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:19,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:21,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:22,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:25,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:26,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:27,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:29,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:33,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:36,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:39,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 20:54:50,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:52,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:54,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:57,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:54:59,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:08,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:11,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:15,238 INFO L93 Difference]: Finished difference Result 211803 states and 361757 transitions. [2022-11-20 20:55:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:55:15,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 215 [2022-11-20 20:55:15,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:16,127 INFO L225 Difference]: With dead ends: 211803 [2022-11-20 20:55:16,127 INFO L226 Difference]: Without dead ends: 107178 [2022-11-20 20:55:17,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:55:17,121 INFO L413 NwaCegarLoop]: 4935 mSDtfsCounter, 3534 mSDsluCounter, 13300 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 7 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 18235 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:17,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3536 Valid, 18235 Invalid, 1548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1530 Invalid, 11 Unknown, 0 Unchecked, 57.3s Time] [2022-11-20 20:55:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107178 states. [2022-11-20 20:55:22,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107178 to 107028. [2022-11-20 20:55:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107028 states, 70404 states have (on average 1.3706607579114822) internal successors, (96500), 75280 states have internal predecessors, (96500), 30710 states have call successors, (30710), 5814 states have call predecessors, (30710), 5913 states have return successors, (55690), 30141 states have call predecessors, (55690), 30709 states have call successors, (55690) [2022-11-20 20:55:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107028 states to 107028 states and 182900 transitions. [2022-11-20 20:55:23,682 INFO L78 Accepts]: Start accepts. Automaton has 107028 states and 182900 transitions. Word has length 215 [2022-11-20 20:55:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:23,683 INFO L495 AbstractCegarLoop]: Abstraction has 107028 states and 182900 transitions. [2022-11-20 20:55:23,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 20:55:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 107028 states and 182900 transitions. [2022-11-20 20:55:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-20 20:55:23,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:23,762 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:23,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:55:23,763 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:55:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:23,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1633321347, now seen corresponding path program 1 times [2022-11-20 20:55:23,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:23,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190394518] [2022-11-20 20:55:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:23,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 20:55:26,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:26,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190394518] [2022-11-20 20:55:26,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190394518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:26,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:26,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:55:26,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004806922] [2022-11-20 20:55:26,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:26,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:55:26,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:26,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:55:26,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:55:26,151 INFO L87 Difference]: Start difference. First operand 107028 states and 182900 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 20:55:28,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:32,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:34,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:36,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:37,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:39,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:41,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:42,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:44,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:46,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:48,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:53,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:55,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:58,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:00,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:05,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:07,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:13,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:25,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:27,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:30,526 INFO L93 Difference]: Finished difference Result 320263 states and 547317 transitions. [2022-11-20 20:56:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:56:30,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 216 [2022-11-20 20:56:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:32,773 INFO L225 Difference]: With dead ends: 320263 [2022-11-20 20:56:32,773 INFO L226 Difference]: Without dead ends: 213262 [2022-11-20 20:56:33,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:56:33,593 INFO L413 NwaCegarLoop]: 4139 mSDtfsCounter, 3616 mSDsluCounter, 11589 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 2 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3631 SdHoareTripleChecker+Valid, 15728 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:33,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3631 Valid, 15728 Invalid, 1308 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1294 Invalid, 12 Unknown, 0 Unchecked, 52.8s Time] [2022-11-20 20:56:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213262 states.