./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/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_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur --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-38b53e6 [2022-11-25 23:15:35,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:15:35,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:15:35,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:15:35,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:15:35,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:15:35,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:15:35,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:15:35,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:15:35,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:15:35,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:15:35,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:15:35,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:15:35,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:15:35,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:15:35,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:15:35,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:15:35,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:15:35,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:15:35,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:15:35,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:15:35,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:15:35,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:15:35,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:15:35,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:15:35,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:15:35,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:15:35,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:15:35,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:15:35,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:15:35,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:15:35,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:15:35,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:15:35,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:15:35,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:15:35,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:15:35,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:15:35,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:15:35,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:15:35,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:15:35,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:15:35,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:15:35,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:15:35,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:15:35,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:15:35,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:15:35,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:15:35,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:15:35,260 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:15:35,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:15:35,260 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:15:35,261 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:15:35,262 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:15:35,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:15:35,262 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:15:35,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:15:35,262 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:15:35,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:15:35,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:15:35,263 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:15:35,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:15:35,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:15:35,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:15:35,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:15:35,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:15:35,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:15:35,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:15:35,265 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:15:35,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:15:35,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:15:35,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:15:35,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:15:35,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:15:35,266 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:15:35,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:15:35,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:15:35,267 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:15:35,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:15:35,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:15:35,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:15:35,268 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_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 [2022-11-25 23:15:35,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:15:35,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:15:35,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:15:35,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:15:35,606 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:15:35,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/../../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 [2022-11-25 23:15:38,715 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:15:39,238 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:15:39,239 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/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 [2022-11-25 23:15:39,283 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/data/e25cc665e/f6dc2496be8748778b5625671f112b7e/FLAG454cb4f1d [2022-11-25 23:15:39,299 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/data/e25cc665e/f6dc2496be8748778b5625671f112b7e [2022-11-25 23:15:39,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:15:39,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:15:39,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:15:39,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:15:39,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:15:39,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:15:39" (1/1) ... [2022-11-25 23:15:39,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755c8b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:39, skipping insertion in model container [2022-11-25 23:15:39,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:15:39" (1/1) ... [2022-11-25 23:15:39,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:15:39,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:15:39,983 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 23:15:40,057 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 23:15:40,067 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-11-25 23:15:40,080 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 23:15:40,143 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,149 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,157 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,158 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,159 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-11-25 23:15:40,161 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,163 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,165 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-11-25 23:15:40,167 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,168 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,169 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,169 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,169 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-25 23:15:40,171 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-25 23:15:40,172 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:15:40,200 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,239 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,262 WARN L623 FunctionHandler]: Unknown extern function note_to_freq [2022-11-25 23:15:40,268 WARN L623 FunctionHandler]: Unknown extern function compute_finetune [2022-11-25 23:15:40,279 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,282 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,316 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,330 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,374 WARN L623 FunctionHandler]: Unknown extern function compute_finetune [2022-11-25 23:15:40,452 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,452 WARN L623 FunctionHandler]: Unknown extern function sound_alloc_synthdev [2022-11-25 23:15:40,453 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,455 WARN L623 FunctionHandler]: Unknown extern function sequencer_init [2022-11-25 23:15:40,460 WARN L623 FunctionHandler]: Unknown extern function conf_printf2 [2022-11-25 23:15:40,464 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,468 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-25 23:15:40,469 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-25 23:15:40,470 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:15:40,470 WARN L623 FunctionHandler]: Unknown extern function sound_unload_synthdev [2022-11-25 23:15:40,481 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 23:15:40,508 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-11-25 23:15:40,510 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-11-25 23:15:40,513 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-11-25 23:15:40,515 WARN L623 FunctionHandler]: Unknown extern function __copy_user_nocache [2022-11-25 23:15:40,516 WARN L623 FunctionHandler]: Unknown extern function __copy_user_nocache [2022-11-25 23:15:40,527 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_a67027b3-3d60-426c-8245-962a359fe97a/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] [2022-11-25 23:15:40,551 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 23:15:40,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:15:40,678 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:15:40,764 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 23:15:40,778 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 23:15:40,789 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-11-25 23:15:40,790 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 23:15:40,804 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,805 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,807 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,808 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,809 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-11-25 23:15:40,810 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,811 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,812 WARN L623 FunctionHandler]: Unknown extern function __request_region [2022-11-25 23:15:40,820 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,821 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,822 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,822 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,823 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-25 23:15:40,824 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-25 23:15:40,825 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:15:40,832 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,903 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,925 WARN L623 FunctionHandler]: Unknown extern function note_to_freq [2022-11-25 23:15:40,926 WARN L623 FunctionHandler]: Unknown extern function compute_finetune [2022-11-25 23:15:40,940 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,942 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-11-25 23:15:40,948 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,950 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:40,972 WARN L623 FunctionHandler]: Unknown extern function compute_finetune [2022-11-25 23:15:41,053 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:41,054 WARN L623 FunctionHandler]: Unknown extern function sound_alloc_synthdev [2022-11-25 23:15:41,054 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:41,057 WARN L623 FunctionHandler]: Unknown extern function sequencer_init [2022-11-25 23:15:41,062 WARN L623 FunctionHandler]: Unknown extern function conf_printf2 [2022-11-25 23:15:41,063 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:15:41,064 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-25 23:15:41,065 WARN L623 FunctionHandler]: Unknown extern function __release_region [2022-11-25 23:15:41,066 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 23:15:41,066 WARN L623 FunctionHandler]: Unknown extern function sound_unload_synthdev [2022-11-25 23:15:41,078 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 23:15:41,087 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-11-25 23:15:41,090 WARN L623 FunctionHandler]: Unknown extern function _copy_from_user [2022-11-25 23:15:41,090 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-11-25 23:15:41,091 WARN L623 FunctionHandler]: Unknown extern function __copy_user_nocache [2022-11-25 23:15:41,092 WARN L623 FunctionHandler]: Unknown extern function __copy_user_nocache [2022-11-25 23:15:41,093 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_a67027b3-3d60-426c-8245-962a359fe97a/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] [2022-11-25 23:15:41,097 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 23:15:41,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:15:41,207 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:15:41,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41 WrapperNode [2022-11-25 23:15:41,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:15:41,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:15:41,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:15:41,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:15:41,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,554 INFO L138 Inliner]: procedures = 106, calls = 3465, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 4297 [2022-11-25 23:15:41,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:15:41,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:15:41,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:15:41,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:15:41,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:15:41,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:15:41,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:15:41,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:15:41,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (1/1) ... [2022-11-25 23:15:41,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:15:41,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:15:41,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:15:42,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:15:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2022-11-25 23:15:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2022-11-25 23:15:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2022-11-25 23:15:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2022-11-25 23:15:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:15:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-25 23:15:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-25 23:15:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2022-11-25 23:15:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2022-11-25 23:15:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 23:15:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 23:15:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2022-11-25 23:15:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2022-11-25 23:15:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-25 23:15:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-25 23:15:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:15:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-25 23:15:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-25 23:15:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2022-11-25 23:15:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2022-11-25 23:15:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-25 23:15:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-25 23:15:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 23:15:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 23:15:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2022-11-25 23:15:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2022-11-25 23:15:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-25 23:15:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-25 23:15:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2022-11-25 23:15:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2022-11-25 23:15:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-25 23:15:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-25 23:15:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2022-11-25 23:15:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2022-11-25 23:15:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2022-11-25 23:15:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2022-11-25 23:15:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:15:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2022-11-25 23:15:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2022-11-25 23:15:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2022-11-25 23:15:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2022-11-25 23:15:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 23:15:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 23:15:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-25 23:15:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-25 23:15:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:15:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:15:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:15:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2022-11-25 23:15:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2022-11-25 23:15:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-25 23:15:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-25 23:15:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:15:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2022-11-25 23:15:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2022-11-25 23:15:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2022-11-25 23:15:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2022-11-25 23:15:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-25 23:15:42,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-25 23:15:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:15:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:15:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:15:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2022-11-25 23:15:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2022-11-25 23:15:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2022-11-25 23:15:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2022-11-25 23:15:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2022-11-25 23:15:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2022-11-25 23:15:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2022-11-25 23:15:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2022-11-25 23:15:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:15:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:15:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-25 23:15:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-25 23:15:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2022-11-25 23:15:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2022-11-25 23:15:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2022-11-25 23:15:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2022-11-25 23:15:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-25 23:15:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-25 23:15:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-25 23:15:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-25 23:15:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2022-11-25 23:15:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2022-11-25 23:15:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:15:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2022-11-25 23:15:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2022-11-25 23:15:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-25 23:15:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-25 23:15:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 23:15:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:15:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:15:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2022-11-25 23:15:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2022-11-25 23:15:42,596 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:15:42,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:15:43,403 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-25 23:15:49,636 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:15:50,584 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:15:50,584 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:15:50,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:15:50 BoogieIcfgContainer [2022-11-25 23:15:50,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:15:50,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:15:50,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:15:50,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:15:50,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:15:39" (1/3) ... [2022-11-25 23:15:50,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cfaecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:15:50, skipping insertion in model container [2022-11-25 23:15:50,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:15:41" (2/3) ... [2022-11-25 23:15:50,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cfaecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:15:50, skipping insertion in model container [2022-11-25 23:15:50,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:15:50" (3/3) ... [2022-11-25 23:15:50,602 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-25 23:15:50,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:15:50,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:15:50,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:15:50,729 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;@7551dc2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:15:50,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:15:50,738 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) [2022-11-25 23:15:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-25 23:15:50,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:15:50,789 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] [2022-11-25 23:15:50,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:15:50,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:15:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1984860205, now seen corresponding path program 1 times [2022-11-25 23:15:50,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:15:50,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424172430] [2022-11-25 23:15:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:15:50,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:15:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:15:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-11-25 23:15:52,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:15:52,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424172430] [2022-11-25 23:15:52,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424172430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:15:52,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:15:52,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:15:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521600181] [2022-11-25 23:15:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:15:52,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:15:52,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:15:52,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:15:52,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:15:52,990 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) [2022-11-25 23:15:55,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:15:56,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:15:57,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:15:59,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:00,566 INFO L93 Difference]: Finished difference Result 1352 states and 2027 transitions. [2022-11-25 23:16:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:00,569 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 [2022-11-25 23:16:00,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:00,588 INFO L225 Difference]: With dead ends: 1352 [2022-11-25 23:16:00,589 INFO L226 Difference]: Without dead ends: 757 [2022-11-25 23:16:00,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:00,601 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 178 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s 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, 7.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:00,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1754 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-25 23:16:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-25 23:16:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 745. [2022-11-25 23:16:00,705 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) [2022-11-25 23:16:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1100 transitions. [2022-11-25 23:16:00,717 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1100 transitions. Word has length 262 [2022-11-25 23:16:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:00,722 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1100 transitions. [2022-11-25 23:16:00,722 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) [2022-11-25 23:16:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1100 transitions. [2022-11-25 23:16:00,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-25 23:16:00,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:00,732 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] [2022-11-25 23:16:00,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:16:00,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2035801806, now seen corresponding path program 1 times [2022-11-25 23:16:00,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:00,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967941003] [2022-11-25 23:16:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-11-25 23:16:02,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:02,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967941003] [2022-11-25 23:16:02,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967941003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:02,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:02,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:16:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504076915] [2022-11-25 23:16:02,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:02,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:02,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:02,762 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) [2022-11-25 23:16:04,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:06,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:07,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:07,555 INFO L93 Difference]: Finished difference Result 2022 states and 2991 transitions. [2022-11-25 23:16:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:07,556 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 [2022-11-25 23:16:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:07,572 INFO L225 Difference]: With dead ends: 2022 [2022-11-25 23:16:07,572 INFO L226 Difference]: Without dead ends: 1375 [2022-11-25 23:16:07,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:07,578 INFO L413 NwaCegarLoop]: 1075 mSDtfsCounter, 833 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s 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, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:07,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1805 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 23:16:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-11-25 23:16:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1373. [2022-11-25 23:16:07,758 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) [2022-11-25 23:16:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2029 transitions. [2022-11-25 23:16:07,777 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2029 transitions. Word has length 273 [2022-11-25 23:16:07,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:07,779 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 2029 transitions. [2022-11-25 23:16:07,779 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) [2022-11-25 23:16:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2029 transitions. [2022-11-25 23:16:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-25 23:16:07,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:07,790 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] [2022-11-25 23:16:07,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:16:07,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1485941966, now seen corresponding path program 1 times [2022-11-25 23:16:07,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:07,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205846884] [2022-11-25 23:16:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:07,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-11-25 23:16:09,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:09,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205846884] [2022-11-25 23:16:09,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205846884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:09,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:09,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:16:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759305245] [2022-11-25 23:16:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:16:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:09,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:16:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:09,218 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) [2022-11-25 23:16:11,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:13,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:13,964 INFO L93 Difference]: Finished difference Result 2652 states and 3921 transitions. [2022-11-25 23:16:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:16:13,965 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 [2022-11-25 23:16:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:13,975 INFO L225 Difference]: With dead ends: 2652 [2022-11-25 23:16:13,975 INFO L226 Difference]: Without dead ends: 1373 [2022-11-25 23:16:13,982 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 [2022-11-25 23:16:13,983 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:13,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2603 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 23:16:13,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-11-25 23:16:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1373. [2022-11-25 23:16:14,054 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) [2022-11-25 23:16:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2027 transitions. [2022-11-25 23:16:14,066 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2027 transitions. Word has length 275 [2022-11-25 23:16:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:14,066 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 2027 transitions. [2022-11-25 23:16:14,067 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) [2022-11-25 23:16:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2027 transitions. [2022-11-25 23:16:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-25 23:16:14,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:14,072 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] [2022-11-25 23:16:14,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:16:14,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:14,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:14,074 INFO L85 PathProgramCache]: Analyzing trace with hash -124817645, now seen corresponding path program 1 times [2022-11-25 23:16:14,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:14,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320965602] [2022-11-25 23:16:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:14,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2022-11-25 23:16:15,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:15,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320965602] [2022-11-25 23:16:15,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320965602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:15,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:15,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:16:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486699821] [2022-11-25 23:16:15,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:16:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:16:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:15,456 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) [2022-11-25 23:16:17,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:19,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:20,191 INFO L93 Difference]: Finished difference Result 2652 states and 3917 transitions. [2022-11-25 23:16:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:16:20,191 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 [2022-11-25 23:16:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:20,205 INFO L225 Difference]: With dead ends: 2652 [2022-11-25 23:16:20,205 INFO L226 Difference]: Without dead ends: 1361 [2022-11-25 23:16:20,213 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 [2022-11-25 23:16:20,217 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:20,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2594 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 23:16:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-11-25 23:16:20,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-11-25 23:16:20,289 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) [2022-11-25 23:16:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1995 transitions. [2022-11-25 23:16:20,300 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1995 transitions. Word has length 278 [2022-11-25 23:16:20,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:20,301 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1995 transitions. [2022-11-25 23:16:20,301 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) [2022-11-25 23:16:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1995 transitions. [2022-11-25 23:16:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-25 23:16:20,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:20,310 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] [2022-11-25 23:16:20,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:16:20,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:20,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1541642054, now seen corresponding path program 1 times [2022-11-25 23:16:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:20,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587492504] [2022-11-25 23:16:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2414 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 2394 trivial. 0 not checked. [2022-11-25 23:16:21,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:21,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587492504] [2022-11-25 23:16:21,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587492504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:16:21,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850054157] [2022-11-25 23:16:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:21,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:21,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:21,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:21,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:16:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:24,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 9946 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:16:24,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2414 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 2383 trivial. 0 not checked. [2022-11-25 23:16:24,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:16:24,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850054157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:24,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:16:24,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 23:16:24,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899916988] [2022-11-25 23:16:24,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:24,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:24,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:24,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:24,474 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) [2022-11-25 23:16:26,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:28,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:29,119 INFO L93 Difference]: Finished difference Result 2648 states and 4067 transitions. [2022-11-25 23:16:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:29,120 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 [2022-11-25 23:16:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:29,130 INFO L225 Difference]: With dead ends: 2648 [2022-11-25 23:16:29,131 INFO L226 Difference]: Without dead ends: 1385 [2022-11-25 23:16:29,140 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 [2022-11-25 23:16:29,141 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 2 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:29,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1707 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 23:16:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2022-11-25 23:16:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1369. [2022-11-25 23:16:29,214 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) [2022-11-25 23:16:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2003 transitions. [2022-11-25 23:16:29,226 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2003 transitions. Word has length 382 [2022-11-25 23:16:29,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:29,228 INFO L495 AbstractCegarLoop]: Abstraction has 1369 states and 2003 transitions. [2022-11-25 23:16:29,229 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) [2022-11-25 23:16:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2003 transitions. [2022-11-25 23:16:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-25 23:16:29,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:29,238 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] [2022-11-25 23:16:29,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:16:29,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:29,460 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1857863080, now seen corresponding path program 1 times [2022-11-25 23:16:29,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:29,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508787068] [2022-11-25 23:16:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:29,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2467 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2465 trivial. 0 not checked. [2022-11-25 23:16:30,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:30,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508787068] [2022-11-25 23:16:30,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508787068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:30,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:30,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:16:30,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334239722] [2022-11-25 23:16:30,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:30,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:30,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:30,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:30,849 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) [2022-11-25 23:16:32,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:35,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:16:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:35,502 INFO L93 Difference]: Finished difference Result 2652 states and 3885 transitions. [2022-11-25 23:16:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:35,503 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 [2022-11-25 23:16:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:35,518 INFO L225 Difference]: With dead ends: 2652 [2022-11-25 23:16:35,518 INFO L226 Difference]: Without dead ends: 1381 [2022-11-25 23:16:35,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:35,529 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:35,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1711 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 23:16:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-11-25 23:16:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1373. [2022-11-25 23:16:35,604 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) [2022-11-25 23:16:35,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2007 transitions. [2022-11-25 23:16:35,613 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2007 transitions. Word has length 392 [2022-11-25 23:16:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:35,614 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 2007 transitions. [2022-11-25 23:16:35,615 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) [2022-11-25 23:16:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2007 transitions. [2022-11-25 23:16:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-25 23:16:35,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:35,624 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] [2022-11-25 23:16:35,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:16:35,624 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 283745220, now seen corresponding path program 1 times [2022-11-25 23:16:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:35,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839173436] [2022-11-25 23:16:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:35,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2577 trivial. 0 not checked. [2022-11-25 23:16:37,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:37,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839173436] [2022-11-25 23:16:37,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839173436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:16:37,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477357795] [2022-11-25 23:16:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:37,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:37,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:37,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:37,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67027b3-3d60-426c-8245-962a359fe97a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:16:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:39,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 10022 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:16:39,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 164 proven. 1 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2022-11-25 23:16:39,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:16:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2577 trivial. 0 not checked. [2022-11-25 23:16:40,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477357795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:16:40,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1369063527] [2022-11-25 23:16:40,216 INFO L159 IcfgInterpreter]: Started Sifa with 184 locations of interest [2022-11-25 23:16:40,217 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:16:40,222 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:16:40,228 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:16:40,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:17:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:34,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:35,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:35,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:36,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:36,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:36,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:37,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:37,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:38,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:38,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:38,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:38,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:38,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:39,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:39,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:39,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:39,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:40,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:40,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:40,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:40,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:40,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:41,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:17:42,033 INFO L217 Elim1Store]: Index analysis took 8257 ms