./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh --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 d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 --- 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-2329fc7 [2022-12-14 05:48:23,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:48:23,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:48:23,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:48:23,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:48:23,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:48:23,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:48:23,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:48:23,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:48:23,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:48:23,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:48:23,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:48:23,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:48:23,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:48:23,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:48:23,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:48:23,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:48:23,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:48:23,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:48:23,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:48:23,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:48:23,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:48:23,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:48:23,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:48:23,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:48:23,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:48:23,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:48:23,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:48:23,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:48:23,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:48:23,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:48:23,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:48:23,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:48:23,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:48:23,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:48:23,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:48:23,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:48:23,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:48:23,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:48:23,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:48:23,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:48:23,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 05:48:23,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:48:23,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:48:23,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:48:23,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:48:23,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:48:23,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:48:23,330 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:48:23,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:48:23,331 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:48:23,331 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:48:23,331 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:48:23,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:48:23,332 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:48:23,332 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:48:23,332 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:48:23,332 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:48:23,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:48:23,332 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:48:23,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:48:23,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:48:23,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:48:23,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:48:23,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:48:23,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:48:23,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:48:23,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:48:23,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:48:23,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:48:23,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:48:23,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:48:23,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:48:23,335 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:48:23,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:48:23,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:48:23,336 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:48:23,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:48:23,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:48:23,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:48:23,336 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_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 [2022-12-14 05:48:23,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:48:23,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:48:23,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:48:23,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:48:23,542 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:48:23,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-12-14 05:48:26,089 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:48:26,368 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:48:26,369 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-12-14 05:48:26,387 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/data/46c071ebb/fe1993c281fc4e24ad7f164cb0f93a22/FLAG99cacd15a [2022-12-14 05:48:26,397 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/data/46c071ebb/fe1993c281fc4e24ad7f164cb0f93a22 [2022-12-14 05:48:26,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:48:26,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:48:26,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:48:26,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:48:26,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:48:26,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:48:26" (1/1) ... [2022-12-14 05:48:26,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5231c82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:26, skipping insertion in model container [2022-12-14 05:48:26,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:48:26" (1/1) ... [2022-12-14 05:48:26,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:48:26,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:48:26,818 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 05:48:26,895 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 05:48:26,897 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-14 05:48:26,908 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 05:48:26,970 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:26,972 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:26,979 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:26,980 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:26,981 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-14 05:48:26,982 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:26,983 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:26,985 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-14 05:48:26,986 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:26,987 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:26,987 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:26,988 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:26,988 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 05:48:26,990 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 05:48:26,990 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 05:48:26,996 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,034 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,060 WARN L623 FunctionHandler]: Unknown extern function note_to_freq [2022-12-14 05:48:27,061 WARN L623 FunctionHandler]: Unknown extern function compute_finetune [2022-12-14 05:48:27,066 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:27,066 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:27,093 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,094 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,111 WARN L623 FunctionHandler]: Unknown extern function compute_finetune [2022-12-14 05:48:27,148 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,148 WARN L623 FunctionHandler]: Unknown extern function sound_alloc_synthdev [2022-12-14 05:48:27,149 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,150 WARN L623 FunctionHandler]: Unknown extern function sequencer_init [2022-12-14 05:48:27,153 WARN L623 FunctionHandler]: Unknown extern function conf_printf2 [2022-12-14 05:48:27,156 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,159 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 05:48:27,160 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 05:48:27,160 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 05:48:27,160 WARN L623 FunctionHandler]: Unknown extern function sound_unload_synthdev [2022-12-14 05:48:27,167 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 05:48:27,175 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-12-14 05:48:27,176 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 05:48:27,177 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 05:48:27,177 WARN L623 FunctionHandler]: Unknown extern function __copy_user_nocache [2022-12-14 05:48:27,178 WARN L623 FunctionHandler]: Unknown extern function __copy_user_nocache [2022-12-14 05:48:27,184 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_47f8a686-0519-439d-b0c9-af78d8bb41db/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2022-12-14 05:48:27,192 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 05:48:27,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:48:27,248 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:48:27,286 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 05:48:27,289 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 05:48:27,290 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-14 05:48:27,291 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-14 05:48:27,295 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,296 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,298 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,298 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,299 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-14 05:48:27,299 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,300 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,301 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-12-14 05:48:27,301 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:27,302 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:27,302 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:27,302 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:27,302 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 05:48:27,303 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 05:48:27,303 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 05:48:27,305 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,314 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,320 WARN L623 FunctionHandler]: Unknown extern function note_to_freq [2022-12-14 05:48:27,321 WARN L623 FunctionHandler]: Unknown extern function compute_finetune [2022-12-14 05:48:27,324 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:27,324 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 05:48:27,328 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,329 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,335 WARN L623 FunctionHandler]: Unknown extern function compute_finetune [2022-12-14 05:48:27,357 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,357 WARN L623 FunctionHandler]: Unknown extern function sound_alloc_synthdev [2022-12-14 05:48:27,358 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,358 WARN L623 FunctionHandler]: Unknown extern function sequencer_init [2022-12-14 05:48:27,360 WARN L623 FunctionHandler]: Unknown extern function conf_printf2 [2022-12-14 05:48:27,361 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 05:48:27,361 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 05:48:27,362 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-12-14 05:48:27,362 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-14 05:48:27,362 WARN L623 FunctionHandler]: Unknown extern function sound_unload_synthdev [2022-12-14 05:48:27,363 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-14 05:48:27,369 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-12-14 05:48:27,369 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-12-14 05:48:27,370 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-14 05:48:27,370 WARN L623 FunctionHandler]: Unknown extern function __copy_user_nocache [2022-12-14 05:48:27,370 WARN L623 FunctionHandler]: Unknown extern function __copy_user_nocache [2022-12-14 05:48:27,371 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_47f8a686-0519-439d-b0c9-af78d8bb41db/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2022-12-14 05:48:27,372 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-14 05:48:27,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:48:27,453 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:48:27,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27 WrapperNode [2022-12-14 05:48:27,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:48:27,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:48:27,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:48:27,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:48:27,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,593 INFO L138 Inliner]: procedures = 106, calls = 3465, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 4297 [2022-12-14 05:48:27,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:48:27,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:48:27,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:48:27,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:48:27,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,717 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:48:27,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:48:27,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:48:27,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:48:27,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (1/1) ... [2022-12-14 05:48:27,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:48:27,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:48:27,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:48:27,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:48:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2022-12-14 05:48:27,792 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2022-12-14 05:48:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2022-12-14 05:48:27,792 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2022-12-14 05:48:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-12-14 05:48:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2022-12-14 05:48:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2022-12-14 05:48:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-14 05:48:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-14 05:48:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2022-12-14 05:48:27,793 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2022-12-14 05:48:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:48:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2022-12-14 05:48:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2022-12-14 05:48:27,795 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-14 05:48:27,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-12-14 05:48:27,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 05:48:27,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2022-12-14 05:48:27,795 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-12-14 05:48:27,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2022-12-14 05:48:27,795 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2022-12-14 05:48:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2022-12-14 05:48:27,795 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-14 05:48:27,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2022-12-14 05:48:27,796 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2022-12-14 05:48:27,796 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2022-12-14 05:48:27,796 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2022-12-14 05:48:27,796 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-12-14 05:48:27,796 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-12-14 05:48:27,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2022-12-14 05:48:27,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2022-12-14 05:48:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-12-14 05:48:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-12-14 05:48:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2022-12-14 05:48:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2022-12-14 05:48:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-12-14 05:48:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:48:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:48:27,797 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2022-12-14 05:48:27,797 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2022-12-14 05:48:28,074 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:48:28,076 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:48:28,645 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-14 05:48:32,573 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:48:33,176 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:48:33,176 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 05:48:33,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:48:33 BoogieIcfgContainer [2022-12-14 05:48:33,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:48:33,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:48:33,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:48:33,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:48:33,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:48:26" (1/3) ... [2022-12-14 05:48:33,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f88026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:48:33, skipping insertion in model container [2022-12-14 05:48:33,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:27" (2/3) ... [2022-12-14 05:48:33,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f88026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:48:33, skipping insertion in model container [2022-12-14 05:48:33,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:48:33" (3/3) ... [2022-12-14 05:48:33,186 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-12-14 05:48:33,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:48:33,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:48:33,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:48:33,249 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;@78621900, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:48:33,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:48:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 662 states, 417 states have (on average 1.3860911270983214) internal successors, (578), 433 states have internal predecessors, (578), 205 states have call successors, (205), 39 states have call predecessors, (205), 38 states have return successors, (202), 198 states have call predecessors, (202), 202 states have call successors, (202) [2022-12-14 05:48:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-12-14 05:48:33,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:48:33,269 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:48:33,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:48:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:48:33,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1054642545, now seen corresponding path program 1 times [2022-12-14 05:48:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:48:33,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747870296] [2022-12-14 05:48:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:33,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:48:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:48:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-12-14 05:48:34,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:48:34,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747870296] [2022-12-14 05:48:34,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747870296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:48:34,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:48:34,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:48:34,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815218029] [2022-12-14 05:48:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:48:34,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:48:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:48:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:48:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:48:34,496 INFO L87 Difference]: Start difference. First operand has 662 states, 417 states have (on average 1.3860911270983214) internal successors, (578), 433 states have internal predecessors, (578), 205 states have call successors, (205), 39 states have call predecessors, (205), 38 states have return successors, (202), 198 states have call predecessors, (202), 202 states have call successors, (202) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2022-12-14 05:48:36,617 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 [] [2022-12-14 05:48:37,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:48:38,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:48:40,919 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 [] [2022-12-14 05:48:41,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:48:41,398 INFO L93 Difference]: Finished difference Result 1352 states and 2027 transitions. [2022-12-14 05:48:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:48:41,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 262 [2022-12-14 05:48:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:48:41,413 INFO L225 Difference]: With dead ends: 1352 [2022-12-14 05:48:41,414 INFO L226 Difference]: Without dead ends: 757 [2022-12-14 05:48:41,419 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 [2022-12-14 05:48:41,421 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 178 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:48:41,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1754 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-12-14 05:48:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-12-14 05:48:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 745. [2022-12-14 05:48:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 466 states have (on average 1.3690987124463518) internal successors, (638), 484 states have internal predecessors, (638), 231 states have call successors, (231), 47 states have call predecessors, (231), 47 states have return successors, (231), 225 states have call predecessors, (231), 231 states have call successors, (231) [2022-12-14 05:48:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1100 transitions. [2022-12-14 05:48:41,497 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1100 transitions. Word has length 262 [2022-12-14 05:48:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:48:41,498 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1100 transitions. [2022-12-14 05:48:41,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2022-12-14 05:48:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1100 transitions. [2022-12-14 05:48:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-12-14 05:48:41,511 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:48:41,512 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:48:41,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:48:41,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:48:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:48:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash 289549936, now seen corresponding path program 1 times [2022-12-14 05:48:41,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:48:41,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691227104] [2022-12-14 05:48:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:41,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:48:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:48:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-12-14 05:48:42,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:48:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691227104] [2022-12-14 05:48:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691227104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:48:42,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:48:42,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:48:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908087780] [2022-12-14 05:48:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:48:42,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:48:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:48:42,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:48:42,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:48:42,613 INFO L87 Difference]: Start difference. First operand 745 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-12-14 05:48:44,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:48:46,739 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 [] [2022-12-14 05:48:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:48:47,168 INFO L93 Difference]: Finished difference Result 2022 states and 2991 transitions. [2022-12-14 05:48:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:48:47,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 273 [2022-12-14 05:48:47,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:48:47,179 INFO L225 Difference]: With dead ends: 2022 [2022-12-14 05:48:47,179 INFO L226 Difference]: Without dead ends: 1375 [2022-12-14 05:48:47,182 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 [2022-12-14 05:48:47,183 INFO L413 NwaCegarLoop]: 1075 mSDtfsCounter, 833 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:48:47,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1805 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 05:48:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-12-14 05:48:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1373. [2022-12-14 05:48:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 869 states have (on average 1.386651323360184) internal successors, (1205), 905 states have internal predecessors, (1205), 412 states have call successors, (412), 91 states have call predecessors, (412), 91 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2022-12-14 05:48:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2029 transitions. [2022-12-14 05:48:47,261 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2029 transitions. Word has length 273 [2022-12-14 05:48:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:48:47,262 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 2029 transitions. [2022-12-14 05:48:47,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-12-14 05:48:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2029 transitions. [2022-12-14 05:48:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-14 05:48:47,266 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:48:47,266 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:48:47,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:48:47,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:48:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:48:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash -301776300, now seen corresponding path program 1 times [2022-12-14 05:48:47,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:48:47,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690900553] [2022-12-14 05:48:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:47,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:48:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:48:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-12-14 05:48:48,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:48:48,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690900553] [2022-12-14 05:48:48,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690900553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:48:48,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:48:48,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:48:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047147385] [2022-12-14 05:48:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:48:48,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:48:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:48:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:48:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:48:48,040 INFO L87 Difference]: Start difference. First operand 1373 states and 2029 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2022-12-14 05:48:50,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:48:52,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:48:52,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:48:52,584 INFO L93 Difference]: Finished difference Result 2652 states and 3921 transitions. [2022-12-14 05:48:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:48:52,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 275 [2022-12-14 05:48:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:48:52,591 INFO L225 Difference]: With dead ends: 2652 [2022-12-14 05:48:52,592 INFO L226 Difference]: Without dead ends: 1373 [2022-12-14 05:48:52,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:48:52,597 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:48:52,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2603 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 05:48:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-12-14 05:48:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1373. [2022-12-14 05:48:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 869 states have (on average 1.384349827387802) internal successors, (1203), 905 states have internal predecessors, (1203), 412 states have call successors, (412), 91 states have call predecessors, (412), 91 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2022-12-14 05:48:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2027 transitions. [2022-12-14 05:48:52,674 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2027 transitions. Word has length 275 [2022-12-14 05:48:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:48:52,674 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 2027 transitions. [2022-12-14 05:48:52,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2022-12-14 05:48:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2027 transitions. [2022-12-14 05:48:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-12-14 05:48:52,678 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:48:52,678 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:48:52,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:48:52,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:48:52,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:48:52,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1506831183, now seen corresponding path program 1 times [2022-12-14 05:48:52,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:48:52,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065175711] [2022-12-14 05:48:52,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:52,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:48:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:48:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-12-14 05:48:53,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:48:53,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065175711] [2022-12-14 05:48:53,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065175711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:48:53,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:48:53,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:48:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718600551] [2022-12-14 05:48:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:48:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:48:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:48:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:48:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:48:53,594 INFO L87 Difference]: Start difference. First operand 1373 states and 2027 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2022-12-14 05:48:55,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:48:57,754 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 [] [2022-12-14 05:48:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:48:58,120 INFO L93 Difference]: Finished difference Result 2652 states and 3917 transitions. [2022-12-14 05:48:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:48:58,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 278 [2022-12-14 05:48:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:48:58,130 INFO L225 Difference]: With dead ends: 2652 [2022-12-14 05:48:58,130 INFO L226 Difference]: Without dead ends: 1361 [2022-12-14 05:48:58,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:48:58,135 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:48:58,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2594 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 05:48:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-12-14 05:48:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-12-14 05:48:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 865 states have (on average 1.3676300578034681) internal successors, (1183), 897 states have internal predecessors, (1183), 406 states have call successors, (406), 89 states have call predecessors, (406), 89 states have return successors, (406), 396 states have call predecessors, (406), 406 states have call successors, (406) [2022-12-14 05:48:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1995 transitions. [2022-12-14 05:48:58,179 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1995 transitions. Word has length 278 [2022-12-14 05:48:58,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:48:58,179 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1995 transitions. [2022-12-14 05:48:58,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2022-12-14 05:48:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1995 transitions. [2022-12-14 05:48:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-12-14 05:48:58,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:48:58,184 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:48:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:48:58,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:48:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:48:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1495717485, now seen corresponding path program 1 times [2022-12-14 05:48:58,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:48:58,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811014210] [2022-12-14 05:48:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:48:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:48:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2414 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 2394 trivial. 0 not checked. [2022-12-14 05:48:58,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:48:58,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811014210] [2022-12-14 05:48:58,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811014210] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:48:58,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114952930] [2022-12-14 05:48:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:58,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:48:58,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:48:58,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:48:58,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:49:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:00,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 9946 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:49:00,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2414 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 2383 trivial. 0 not checked. [2022-12-14 05:49:00,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:49:00,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114952930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:49:00,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:49:00,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 05:49:00,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617899119] [2022-12-14 05:49:00,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:49:00,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:49:00,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:49:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:49:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:49:00,663 INFO L87 Difference]: Start difference. First operand 1361 states and 1995 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-12-14 05:49:03,587 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 [] [2022-12-14 05:49:05,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:49:05,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:49:05,870 INFO L93 Difference]: Finished difference Result 2648 states and 4067 transitions. [2022-12-14 05:49:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:49:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 382 [2022-12-14 05:49:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:49:05,876 INFO L225 Difference]: With dead ends: 2648 [2022-12-14 05:49:05,876 INFO L226 Difference]: Without dead ends: 1385 [2022-12-14 05:49:05,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:49:05,882 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 2 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:49:05,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1707 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-12-14 05:49:05,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2022-12-14 05:49:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1369. [2022-12-14 05:49:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 873 states have (on average 1.3642611683848798) internal successors, (1191), 905 states have internal predecessors, (1191), 406 states have call successors, (406), 89 states have call predecessors, (406), 89 states have return successors, (406), 396 states have call predecessors, (406), 406 states have call successors, (406) [2022-12-14 05:49:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2003 transitions. [2022-12-14 05:49:05,965 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2003 transitions. Word has length 382 [2022-12-14 05:49:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:49:05,966 INFO L495 AbstractCegarLoop]: Abstraction has 1369 states and 2003 transitions. [2022-12-14 05:49:05,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-12-14 05:49:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2003 transitions. [2022-12-14 05:49:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-12-14 05:49:05,970 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:49:05,970 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:49:05,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:49:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:49:06,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:49:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:49:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1221644374, now seen corresponding path program 1 times [2022-12-14 05:49:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:49:06,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119773191] [2022-12-14 05:49:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:49:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2467 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2465 trivial. 0 not checked. [2022-12-14 05:49:07,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:49:07,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119773191] [2022-12-14 05:49:07,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119773191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:49:07,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:49:07,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:49:07,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588515427] [2022-12-14 05:49:07,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:49:07,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:49:07,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:49:07,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:49:07,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:49:07,018 INFO L87 Difference]: Start difference. First operand 1369 states and 2003 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-12-14 05:49:09,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:49:10,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:49:11,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:49:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:49:12,075 INFO L93 Difference]: Finished difference Result 2652 states and 3885 transitions. [2022-12-14 05:49:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:49:12,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 392 [2022-12-14 05:49:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:49:12,081 INFO L225 Difference]: With dead ends: 2652 [2022-12-14 05:49:12,081 INFO L226 Difference]: Without dead ends: 1381 [2022-12-14 05:49:12,086 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 [2022-12-14 05:49:12,086 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:49:12,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1711 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-12-14 05:49:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-12-14 05:49:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1373. [2022-12-14 05:49:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 877 states have (on average 1.362599771949829) internal successors, (1195), 909 states have internal predecessors, (1195), 406 states have call successors, (406), 89 states have call predecessors, (406), 89 states have return successors, (406), 396 states have call predecessors, (406), 406 states have call successors, (406) [2022-12-14 05:49:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2007 transitions. [2022-12-14 05:49:12,128 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2007 transitions. Word has length 392 [2022-12-14 05:49:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:49:12,128 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 2007 transitions. [2022-12-14 05:49:12,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-12-14 05:49:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2007 transitions. [2022-12-14 05:49:12,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-12-14 05:49:12,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:49:12,131 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:49:12,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 05:49:12,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:49:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:49:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1195821440, now seen corresponding path program 1 times [2022-12-14 05:49:12,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:49:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135848338] [2022-12-14 05:49:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:49:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2577 trivial. 0 not checked. [2022-12-14 05:49:12,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:49:12,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135848338] [2022-12-14 05:49:12,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135848338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:49:12,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550985176] [2022-12-14 05:49:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:12,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:49:12,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:49:12,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:49:12,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f8a686-0519-439d-b0c9-af78d8bb41db/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:49:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:14,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 10022 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:49:14,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 164 proven. 1 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2022-12-14 05:49:14,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:49:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2577 trivial. 0 not checked. [2022-12-14 05:49:14,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550985176] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:49:14,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [754946993] [2022-12-14 05:49:14,485 INFO L159 IcfgInterpreter]: Started Sifa with 184 locations of interest [2022-12-14 05:49:14,485 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:49:14,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:49:14,492 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:49:14,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:50:02,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:02,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:03,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:03,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:03,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:03,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:04,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:04,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:04,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:04,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:04,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:05,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:05,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:05,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:05,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:05,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:05,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:06,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:06,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:06,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:06,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:06,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:50:07,827 INFO L217 Elim1Store]: Index analysis took 5308 ms [2022-12-14 06:02:37,968 WARN L233 SmtUtils]: Spent 12.50m on a formula simplification. DAG size of input: 8925 DAG size of output: 2168 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 06:02:37,977 INFO L321 Elim1Store]: treesize reduction 115191, result has 3.5 percent of original size [2022-12-14 06:02:37,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 66 select indices, 66 select index equivalence classes, 429 disjoint index pairs (out of 2145 index pairs), introduced 66 new quantified variables, introduced 1817 case distinctions, treesize of input 3415 treesize of output 7393 [2022-12-14 06:02:43,951 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 3764 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)