./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/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_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/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_86aecee3-211e-4009-9106-ba98ff40f16d/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 b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a --- 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 22:20:34,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:20:34,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:20:34,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:20:34,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:20:34,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:20:34,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:20:34,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:20:34,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:20:34,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:20:34,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:20:34,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:20:34,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:20:34,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:20:34,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:20:34,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:20:34,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:20:34,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:20:34,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:20:34,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:20:34,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:20:34,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:20:34,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:20:34,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:20:34,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:20:34,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:20:34,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:20:34,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:20:34,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:20:34,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:20:34,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:20:34,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:20:34,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:20:34,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:20:34,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:20:34,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:20:34,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:20:34,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:20:34,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:20:34,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:20:34,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:20:34,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 22:20:34,350 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:20:34,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:20:34,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:20:34,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:20:34,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:20:34,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:20:34,352 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:20:34,353 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:20:34,353 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:20:34,353 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:20:34,353 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:20:34,354 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:20:34,354 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:20:34,354 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:20:34,355 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:20:34,355 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:20:34,355 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:20:34,356 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:20:34,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:20:34,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:20:34,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:20:34,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:20:34,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:20:34,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:20:34,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:20:34,358 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:20:34,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:20:34,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:20:34,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:20:34,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:20:34,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:20:34,360 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:20:34,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:20:34,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:20:34,361 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:20:34,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:20:34,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:20:34,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:20:34,362 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_86aecee3-211e-4009-9106-ba98ff40f16d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a [2022-11-25 22:20:34,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:20:34,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:20:34,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:20:34,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:20:34,662 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:20:34,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-25 22:20:37,817 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:20:38,423 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:20:38,423 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-25 22:20:38,464 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/data/47a5e9694/a0eebee5bb454906a5903741e1b6a799/FLAG47010d8da [2022-11-25 22:20:38,484 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/data/47a5e9694/a0eebee5bb454906a5903741e1b6a799 [2022-11-25 22:20:38,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:20:38,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:20:38,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:20:38,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:20:38,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:20:38,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:20:38" (1/1) ... [2022-11-25 22:20:38,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb3ddf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:38, skipping insertion in model container [2022-11-25 22:20:38,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:20:38" (1/1) ... [2022-11-25 22:20:38,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:20:38,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:20:39,452 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 22:20:39,492 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 22:20:39,498 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_bh [2022-11-25 22:20:39,502 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 22:20:39,507 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_bh [2022-11-25 22:20:39,592 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:39,644 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:39,645 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-11-25 22:20:39,719 WARN L623 FunctionHandler]: Unknown extern function unregister_netdevice_queue [2022-11-25 22:20:39,742 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-25 22:20:39,743 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-25 22:20:39,754 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 22:20:39,757 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:39,845 WARN L623 FunctionHandler]: Unknown extern function slhc_init [2022-11-25 22:20:39,849 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,851 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,852 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,854 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,855 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,856 WARN L623 FunctionHandler]: Unknown extern function slhc_free [2022-11-25 22:20:39,856 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,856 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,865 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,865 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,871 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,872 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,873 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,874 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,880 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,880 WARN L623 FunctionHandler]: Unknown extern function slhc_free [2022-11-25 22:20:39,890 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:39,905 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,906 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,908 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:39,912 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,912 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,913 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:39,925 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:39,926 WARN L623 FunctionHandler]: Unknown extern function slhc_uncompress [2022-11-25 22:20:39,928 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:39,929 WARN L623 FunctionHandler]: Unknown extern function slhc_remember [2022-11-25 22:20:39,930 WARN L623 FunctionHandler]: Unknown extern function dev_alloc_skb [2022-11-25 22:20:39,931 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:39,932 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 22:20:39,933 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 22:20:39,938 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:39,939 WARN L623 FunctionHandler]: Unknown extern function slhc_compress [2022-11-25 22:20:39,958 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-11-25 22:20:39,959 WARN L623 FunctionHandler]: Unknown extern function tty_chars_in_buffer [2022-11-25 22:20:39,959 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:39,965 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:39,966 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 22:20:39,967 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 22:20:39,968 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 22:20:40,006 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 22:20:40,023 WARN L623 FunctionHandler]: Unknown extern function dev_close [2022-11-25 22:20:40,031 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 22:20:40,032 WARN L623 FunctionHandler]: Unknown extern function alloc_netdev_mqs [2022-11-25 22:20:40,033 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 22:20:40,039 WARN L623 FunctionHandler]: Unknown extern function capable [2022-11-25 22:20:40,040 WARN L623 FunctionHandler]: Unknown extern function rtnl_lock [2022-11-25 22:20:40,041 WARN L623 FunctionHandler]: Unknown extern function tty_devnum [2022-11-25 22:20:40,042 WARN L623 FunctionHandler]: Unknown extern function tty_devnum [2022-11-25 22:20:40,045 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-25 22:20:40,046 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-25 22:20:40,047 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-11-25 22:20:40,048 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-11-25 22:20:40,056 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 22:20:40,083 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,085 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,087 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,090 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,091 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,094 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,095 WARN L623 FunctionHandler]: Unknown extern function tty_mode_ioctl [2022-11-25 22:20:40,112 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,113 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,114 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,115 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,115 WARN L623 FunctionHandler]: Unknown extern function tty_register_ldisc [2022-11-25 22:20:40,116 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,116 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,121 WARN L623 FunctionHandler]: Unknown extern function msleep_interruptible [2022-11-25 22:20:40,123 WARN L623 FunctionHandler]: Unknown extern function tty_hangup [2022-11-25 22:20:40,125 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,126 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 22:20:40,127 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,127 WARN L623 FunctionHandler]: Unknown extern function tty_unregister_ldisc [2022-11-25 22:20:40,128 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,134 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,134 WARN L623 FunctionHandler]: Unknown extern function tty_hangup [2022-11-25 22:20:40,151 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,152 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,152 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 22:20:40,163 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-11-25 22:20:40,164 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 22:20:40,164 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,166 WARN L623 FunctionHandler]: Unknown extern function register_netdevice [2022-11-25 22:20:40,167 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 22:20:40,167 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 22:20:40,168 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,169 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,169 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,170 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,171 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,172 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,172 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,173 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,174 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,174 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,175 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,179 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_86aecee3-211e-4009-9106-ba98ff40f16d/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-25 22:20:40,185 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,186 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,190 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:20:40,242 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:20:40,335 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 22:20:40,336 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 22:20:40,337 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_bh [2022-11-25 22:20:40,337 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 22:20:40,338 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_bh [2022-11-25 22:20:40,338 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,340 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,340 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-11-25 22:20:40,347 WARN L623 FunctionHandler]: Unknown extern function unregister_netdevice_queue [2022-11-25 22:20:40,348 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-11-25 22:20:40,353 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-11-25 22:20:40,354 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 22:20:40,355 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,360 WARN L623 FunctionHandler]: Unknown extern function slhc_init [2022-11-25 22:20:40,373 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,411 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,412 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,413 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,413 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,414 WARN L623 FunctionHandler]: Unknown extern function slhc_free [2022-11-25 22:20:40,414 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,414 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,416 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,416 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,417 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,417 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,418 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,418 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,425 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,427 WARN L623 FunctionHandler]: Unknown extern function slhc_free [2022-11-25 22:20:40,430 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,433 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,434 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,442 WARN L623 FunctionHandler]: Unknown extern function __xchg_wrong_size [2022-11-25 22:20:40,444 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,446 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,446 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,448 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,450 WARN L623 FunctionHandler]: Unknown extern function slhc_uncompress [2022-11-25 22:20:40,453 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,454 WARN L623 FunctionHandler]: Unknown extern function slhc_remember [2022-11-25 22:20:40,456 WARN L623 FunctionHandler]: Unknown extern function dev_alloc_skb [2022-11-25 22:20:40,456 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,463 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 22:20:40,466 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-11-25 22:20:40,468 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,469 WARN L623 FunctionHandler]: Unknown extern function slhc_compress [2022-11-25 22:20:40,489 WARN L623 FunctionHandler]: Unknown extern function dev_trans_start [2022-11-25 22:20:40,489 WARN L623 FunctionHandler]: Unknown extern function tty_chars_in_buffer [2022-11-25 22:20:40,490 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,492 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,493 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 22:20:40,494 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 22:20:40,495 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-11-25 22:20:40,503 WARN L623 FunctionHandler]: Unknown extern function free_netdev [2022-11-25 22:20:40,515 WARN L623 FunctionHandler]: Unknown extern function dev_close [2022-11-25 22:20:40,517 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 22:20:40,518 WARN L623 FunctionHandler]: Unknown extern function alloc_netdev_mqs [2022-11-25 22:20:40,519 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-11-25 22:20:40,521 WARN L623 FunctionHandler]: Unknown extern function capable [2022-11-25 22:20:40,522 WARN L623 FunctionHandler]: Unknown extern function rtnl_lock [2022-11-25 22:20:40,528 WARN L623 FunctionHandler]: Unknown extern function tty_devnum [2022-11-25 22:20:40,529 WARN L623 FunctionHandler]: Unknown extern function tty_devnum [2022-11-25 22:20:40,535 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-25 22:20:40,539 WARN L623 FunctionHandler]: Unknown extern function add_timer [2022-11-25 22:20:40,539 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-11-25 22:20:40,540 WARN L623 FunctionHandler]: Unknown extern function rtnl_unlock [2022-11-25 22:20:40,541 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 22:20:40,561 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,562 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,563 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,570 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,573 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,575 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-11-25 22:20:40,576 WARN L623 FunctionHandler]: Unknown extern function tty_mode_ioctl [2022-11-25 22:20:40,586 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,586 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,587 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,588 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,589 WARN L623 FunctionHandler]: Unknown extern function tty_register_ldisc [2022-11-25 22:20:40,590 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,590 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,591 WARN L623 FunctionHandler]: Unknown extern function msleep_interruptible [2022-11-25 22:20:40,592 WARN L623 FunctionHandler]: Unknown extern function tty_hangup [2022-11-25 22:20:40,593 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,600 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-11-25 22:20:40,601 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 22:20:40,602 WARN L623 FunctionHandler]: Unknown extern function tty_unregister_ldisc [2022-11-25 22:20:40,602 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,609 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 22:20:40,609 WARN L623 FunctionHandler]: Unknown extern function tty_hangup [2022-11-25 22:20:40,614 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,615 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,615 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 22:20:40,621 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-11-25 22:20:40,622 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 22:20:40,623 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,624 WARN L623 FunctionHandler]: Unknown extern function register_netdevice [2022-11-25 22:20:40,625 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 22:20:40,626 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 22:20:40,627 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,627 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,628 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,628 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,629 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,629 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,630 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,630 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,631 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,631 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 22:20:40,631 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 22:20:40,633 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_86aecee3-211e-4009-9106-ba98ff40f16d/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-25 22:20:40,647 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,649 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,651 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 22:20:40,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:20:40,792 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:20:40,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40 WrapperNode [2022-11-25 22:20:40,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:20:40,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:20:40,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:20:40,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:20:40,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:40,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,037 INFO L138 Inliner]: procedures = 187, calls = 873, calls flagged for inlining = 93, calls inlined = 91, statements flattened = 3213 [2022-11-25 22:20:41,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:20:41,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:20:41,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:20:41,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:20:41,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,260 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:20:41,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:20:41,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:20:41,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:20:41,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (1/1) ... [2022-11-25 22:20:41,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:20:41,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:41,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:20:41,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:20:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-25 22:20:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-25 22:20:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-25 22:20:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-25 22:20:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 22:20:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-25 22:20:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-25 22:20:41,396 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-25 22:20:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 22:20:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 22:20:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-25 22:20:41,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-25 22:20:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:20:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-25 22:20:41,401 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-25 22:20:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-25 22:20:41,402 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-25 22:20:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-25 22:20:41,403 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-25 22:20:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-25 22:20:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-25 22:20:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-25 22:20:41,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-25 22:20:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-25 22:20:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-25 22:20:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 22:20:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 22:20:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-25 22:20:41,411 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-25 22:20:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-25 22:20:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-25 22:20:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-25 22:20:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-25 22:20:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-25 22:20:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-25 22:20:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:20:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 22:20:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 22:20:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-25 22:20:41,413 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-25 22:20:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-25 22:20:41,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-25 22:20:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:20:41,413 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:20:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-25 22:20:41,413 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-25 22:20:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-25 22:20:41,414 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-25 22:20:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:20:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-25 22:20:41,414 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-25 22:20:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-25 22:20:41,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-25 22:20:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-25 22:20:41,415 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-25 22:20:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-25 22:20:41,415 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-25 22:20:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:20:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-25 22:20:41,415 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-25 22:20:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-25 22:20:41,415 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-25 22:20:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:20:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:20:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-25 22:20:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-25 22:20:41,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-25 22:20:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-25 22:20:41,416 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-25 22:20:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-25 22:20:41,417 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-25 22:20:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-25 22:20:41,417 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-25 22:20:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:20:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-25 22:20:41,417 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-25 22:20:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-25 22:20:41,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-25 22:20:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-25 22:20:41,418 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-25 22:20:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-25 22:20:41,418 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-25 22:20:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-25 22:20:41,418 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-25 22:20:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:20:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-25 22:20:41,419 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-25 22:20:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:20:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-25 22:20:41,419 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-25 22:20:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-25 22:20:41,419 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-25 22:20:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-25 22:20:41,419 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-25 22:20:41,420 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-25 22:20:41,420 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-25 22:20:41,420 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-25 22:20:41,420 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-25 22:20:41,420 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-25 22:20:41,420 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-25 22:20:41,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-25 22:20:41,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-25 22:20:41,421 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-25 22:20:41,421 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-25 22:20:41,421 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-25 22:20:41,421 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-25 22:20:41,421 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-25 22:20:41,421 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-25 22:20:41,421 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-25 22:20:41,421 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-25 22:20:41,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:20:41,422 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-25 22:20:41,422 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-25 22:20:41,422 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-25 22:20:41,422 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-25 22:20:41,422 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-25 22:20:41,422 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-25 22:20:41,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 22:20:41,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:20:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:20:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-25 22:20:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-25 22:20:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-25 22:20:41,425 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-25 22:20:42,047 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:20:42,050 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:20:42,225 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-25 22:20:45,087 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:20:46,319 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:20:46,320 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:20:46,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:20:46 BoogieIcfgContainer [2022-11-25 22:20:46,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:20:46,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:20:46,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:20:46,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:20:46,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:20:38" (1/3) ... [2022-11-25 22:20:46,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e34c80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:20:46, skipping insertion in model container [2022-11-25 22:20:46,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:40" (2/3) ... [2022-11-25 22:20:46,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e34c80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:20:46, skipping insertion in model container [2022-11-25 22:20:46,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:20:46" (3/3) ... [2022-11-25 22:20:46,341 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-25 22:20:46,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:20:46,362 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:20:46,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:20:46,455 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;@2727aaeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:20:46,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:20:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 787 states, 497 states have (on average 1.3983903420523138) internal successors, (695), 529 states have internal predecessors, (695), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-25 22:20:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 22:20:46,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:46,482 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-25 22:20:46,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:20:46,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2125175761, now seen corresponding path program 1 times [2022-11-25 22:20:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:46,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209385305] [2022-11-25 22:20:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-25 22:20:47,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:47,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209385305] [2022-11-25 22:20:47,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209385305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:20:47,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:20:47,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:20:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431551080] [2022-11-25 22:20:47,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:20:47,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:20:47,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:47,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:20:47,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:20:47,213 INFO L87 Difference]: Start difference. First operand has 787 states, 497 states have (on average 1.3983903420523138) internal successors, (695), 529 states have internal predecessors, (695), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 22:20:49,527 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 22:20:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:50,389 INFO L93 Difference]: Finished difference Result 1986 states and 2907 transitions. [2022-11-25 22:20:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:20:50,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2022-11-25 22:20:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:50,415 INFO L225 Difference]: With dead ends: 1986 [2022-11-25 22:20:50,417 INFO L226 Difference]: Without dead ends: 1169 [2022-11-25 22:20:50,429 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 22:20:50,432 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 662 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:50,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 2103 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 22:20:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2022-11-25 22:20:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1168. [2022-11-25 22:20:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 736 states have (on average 1.3682065217391304) internal successors, (1007), 769 states have internal predecessors, (1007), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (341), 337 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-25 22:20:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1689 transitions. [2022-11-25 22:20:50,589 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1689 transitions. Word has length 124 [2022-11-25 22:20:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:50,591 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1689 transitions. [2022-11-25 22:20:50,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 22:20:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1689 transitions. [2022-11-25 22:20:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-25 22:20:50,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:50,607 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2022-11-25 22:20:50,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:20:50,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:20:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:50,609 INFO L85 PathProgramCache]: Analyzing trace with hash -736166892, now seen corresponding path program 1 times [2022-11-25 22:20:50,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:50,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559076423] [2022-11-25 22:20:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-25 22:20:51,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:51,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559076423] [2022-11-25 22:20:51,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559076423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:20:51,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:20:51,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:20:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159468105] [2022-11-25 22:20:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:20:51,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:20:51,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:51,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:20:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:20:51,164 INFO L87 Difference]: Start difference. First operand 1168 states and 1689 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:20:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:54,326 INFO L93 Difference]: Finished difference Result 2300 states and 3328 transitions. [2022-11-25 22:20:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:20:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2022-11-25 22:20:54,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:54,340 INFO L225 Difference]: With dead ends: 2300 [2022-11-25 22:20:54,340 INFO L226 Difference]: Without dead ends: 1168 [2022-11-25 22:20:54,345 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 22:20:54,347 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 1 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:54,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2926 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 22:20:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-25 22:20:54,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2022-11-25 22:20:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 736 states have (on average 1.3654891304347827) internal successors, (1005), 769 states have internal predecessors, (1005), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (341), 337 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-25 22:20:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1687 transitions. [2022-11-25 22:20:54,433 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1687 transitions. Word has length 170 [2022-11-25 22:20:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:54,434 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1687 transitions. [2022-11-25 22:20:54,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:20:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1687 transitions. [2022-11-25 22:20:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-25 22:20:54,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:54,445 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2022-11-25 22:20:54,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:20:54,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:20:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -614769081, now seen corresponding path program 1 times [2022-11-25 22:20:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:54,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933564524] [2022-11-25 22:20:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:54,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-25 22:20:55,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:55,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933564524] [2022-11-25 22:20:55,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933564524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:20:55,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:20:55,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:20:55,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091670655] [2022-11-25 22:20:55,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:20:55,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:20:55,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:55,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:20:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:20:55,044 INFO L87 Difference]: Start difference. First operand 1168 states and 1687 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-25 22:20:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:58,116 INFO L93 Difference]: Finished difference Result 1644 states and 2466 transitions. [2022-11-25 22:20:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:20:58,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 172 [2022-11-25 22:20:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:58,130 INFO L225 Difference]: With dead ends: 1644 [2022-11-25 22:20:58,130 INFO L226 Difference]: Without dead ends: 1642 [2022-11-25 22:20:58,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:20:58,138 INFO L413 NwaCegarLoop]: 1465 mSDtfsCounter, 607 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:58,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3696 Invalid, 605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 22:20:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-11-25 22:20:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1170. [2022-11-25 22:20:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 738 states have (on average 1.3644986449864498) internal successors, (1007), 771 states have internal predecessors, (1007), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (341), 337 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-25 22:20:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1689 transitions. [2022-11-25 22:20:58,235 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1689 transitions. Word has length 172 [2022-11-25 22:20:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:58,237 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1689 transitions. [2022-11-25 22:20:58,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-25 22:20:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1689 transitions. [2022-11-25 22:20:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-25 22:20:58,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:58,243 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2022-11-25 22:20:58,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:20:58,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:20:58,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:58,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1741382129, now seen corresponding path program 1 times [2022-11-25 22:20:58,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:58,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438633466] [2022-11-25 22:20:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:58,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-25 22:20:58,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:58,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438633466] [2022-11-25 22:20:58,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438633466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:20:58,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:20:58,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:20:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315642674] [2022-11-25 22:20:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:20:58,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:20:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:58,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:20:58,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:20:58,798 INFO L87 Difference]: Start difference. First operand 1170 states and 1689 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-25 22:21:01,153 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 22:21:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:03,042 INFO L93 Difference]: Finished difference Result 2776 states and 4103 transitions. [2022-11-25 22:21:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:21:03,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 180 [2022-11-25 22:21:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:03,054 INFO L225 Difference]: With dead ends: 2776 [2022-11-25 22:21:03,054 INFO L226 Difference]: Without dead ends: 1646 [2022-11-25 22:21:03,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:21:03,060 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 1387 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:03,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1761 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 22:21:03,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-25 22:21:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1171. [2022-11-25 22:21:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 739 states have (on average 1.3640054127198917) internal successors, (1008), 772 states have internal predecessors, (1008), 341 states have call successors, (341), 91 states have call predecessors, (341), 90 states have return successors, (341), 337 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-25 22:21:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1690 transitions. [2022-11-25 22:21:03,143 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1690 transitions. Word has length 180 [2022-11-25 22:21:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:03,144 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1690 transitions. [2022-11-25 22:21:03,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-25 22:21:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1690 transitions. [2022-11-25 22:21:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-25 22:21:03,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:03,152 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2022-11-25 22:21:03,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:21:03,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:03,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1889083966, now seen corresponding path program 1 times [2022-11-25 22:21:03,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:03,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556508559] [2022-11-25 22:21:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-25 22:21:03,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:03,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556508559] [2022-11-25 22:21:03,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556508559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:03,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:03,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:21:03,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76587717] [2022-11-25 22:21:03,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:03,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:21:03,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:03,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:21:03,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:21:03,663 INFO L87 Difference]: Start difference. First operand 1171 states and 1690 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 22:21:05,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 22:21:07,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 22:21:09,509 WARN L539 Checker$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 22:21:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:11,429 INFO L93 Difference]: Finished difference Result 2449 states and 3779 transitions. [2022-11-25 22:21:11,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:21:11,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2022-11-25 22:21:11,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:11,447 INFO L225 Difference]: With dead ends: 2449 [2022-11-25 22:21:11,448 INFO L226 Difference]: Without dead ends: 2447 [2022-11-25 22:21:11,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:21:11,451 INFO L413 NwaCegarLoop]: 1844 mSDtfsCounter, 1304 mSDsluCounter, 4320 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 403 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 6164 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:11,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 6164 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 718 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-25 22:21:11,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2022-11-25 22:21:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1173. [2022-11-25 22:21:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 740 states have (on average 1.3635135135135135) internal successors, (1009), 772 states have internal predecessors, (1009), 342 states have call successors, (342), 91 states have call predecessors, (342), 90 states have return successors, (342), 338 states have call predecessors, (342), 342 states have call successors, (342) [2022-11-25 22:21:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1693 transitions. [2022-11-25 22:21:11,574 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1693 transitions. Word has length 181 [2022-11-25 22:21:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:11,575 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1693 transitions. [2022-11-25 22:21:11,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 22:21:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1693 transitions. [2022-11-25 22:21:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-25 22:21:11,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:11,583 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-25 22:21:11,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:21:11,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1348573724, now seen corresponding path program 1 times [2022-11-25 22:21:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:11,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177894907] [2022-11-25 22:21:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-25 22:21:11,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:11,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177894907] [2022-11-25 22:21:11,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177894907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:11,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:11,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:21:11,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203646740] [2022-11-25 22:21:11,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:11,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:21:11,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:21:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:21:11,885 INFO L87 Difference]: Start difference. First operand 1173 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-25 22:21:14,071 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 22:21:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:14,970 INFO L93 Difference]: Finished difference Result 2704 states and 3893 transitions. [2022-11-25 22:21:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:21:14,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 205 [2022-11-25 22:21:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:14,983 INFO L225 Difference]: With dead ends: 2704 [2022-11-25 22:21:14,984 INFO L226 Difference]: Without dead ends: 1571 [2022-11-25 22:21:14,989 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 22:21:14,991 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 1027 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:14,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 2011 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 22:21:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-11-25 22:21:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1569. [2022-11-25 22:21:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 986 states have (on average 1.3580121703853956) internal successors, (1339), 1027 states have internal predecessors, (1339), 456 states have call successors, (456), 128 states have call predecessors, (456), 126 states have return successors, (456), 449 states have call predecessors, (456), 456 states have call successors, (456) [2022-11-25 22:21:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2251 transitions. [2022-11-25 22:21:15,208 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2251 transitions. Word has length 205 [2022-11-25 22:21:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:15,212 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2251 transitions. [2022-11-25 22:21:15,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-25 22:21:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2251 transitions. [2022-11-25 22:21:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-25 22:21:15,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:15,222 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-25 22:21:15,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 22:21:15,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:15,223 INFO L85 PathProgramCache]: Analyzing trace with hash 564239138, now seen corresponding path program 1 times [2022-11-25 22:21:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:15,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262389545] [2022-11-25 22:21:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-25 22:21:15,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:15,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262389545] [2022-11-25 22:21:15,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262389545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:21:15,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:21:15,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:21:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360556166] [2022-11-25 22:21:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:21:15,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:21:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:21:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:21:15,742 INFO L87 Difference]: Start difference. First operand 1569 states and 2251 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-25 22:21:18,348 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 22:21:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:22,003 INFO L93 Difference]: Finished difference Result 4133 states and 6227 transitions. [2022-11-25 22:21:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:21:22,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 207 [2022-11-25 22:21:22,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:22,024 INFO L225 Difference]: With dead ends: 4133 [2022-11-25 22:21:22,024 INFO L226 Difference]: Without dead ends: 3000 [2022-11-25 22:21:22,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:21:22,034 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 2509 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 359 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2613 SdHoareTripleChecker+Valid, 3858 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:22,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2613 Valid, 3858 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1656 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-25 22:21:22,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2022-11-25 22:21:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1572. [2022-11-25 22:21:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 989 states have (on average 1.3579373104145602) internal successors, (1343), 1030 states have internal predecessors, (1343), 456 states have call successors, (456), 128 states have call predecessors, (456), 126 states have return successors, (456), 449 states have call predecessors, (456), 456 states have call successors, (456) [2022-11-25 22:21:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2255 transitions. [2022-11-25 22:21:22,266 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2255 transitions. Word has length 207 [2022-11-25 22:21:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:22,267 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2255 transitions. [2022-11-25 22:21:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-25 22:21:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2255 transitions. [2022-11-25 22:21:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-25 22:21:22,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:22,291 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-25 22:21:22,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:21:22,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:21:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1098921219, now seen corresponding path program 1 times [2022-11-25 22:21:22,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:22,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144219282] [2022-11-25 22:21:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-25 22:21:22,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:22,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144219282] [2022-11-25 22:21:22,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144219282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:21:22,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085326801] [2022-11-25 22:21:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:22,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:22,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:22,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:22,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86aecee3-211e-4009-9106-ba98ff40f16d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:21:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:23,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:21:23,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-25 22:21:24,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-25 22:21:24,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085326801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:24,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [27689534] [2022-11-25 22:21:24,707 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2022-11-25 22:21:24,707 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:21:24,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:21:24,717 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:21:24,717 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:21:25,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:25,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:25,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:25,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:25,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:25,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:25,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:25,792 INFO L217 Elim1Store]: Index analysis took 287 ms [2022-11-25 22:21:34,640 WARN L233 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 823 DAG size of output: 348 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 22:21:34,645 INFO L321 Elim1Store]: treesize reduction 3807, result has 16.8 percent of original size [2022-11-25 22:21:34,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 365 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 32 case distinctions, treesize of input 160 treesize of output 859 [2022-11-25 22:21:35,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:35,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:35,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:36,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:36,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:36,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:36,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:36,403 INFO L217 Elim1Store]: Index analysis took 977 ms [2022-11-25 22:21:51,683 WARN L233 SmtUtils]: Spent 15.25s on a formula simplification. DAG size of input: 1206 DAG size of output: 490 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 22:21:51,697 INFO L321 Elim1Store]: treesize reduction 5310, result has 14.3 percent of original size [2022-11-25 22:21:51,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 392 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 241 case distinctions, treesize of input 284 treesize of output 1093 [2022-11-25 22:21:55,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 22:21:55,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 22:21:55,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-25 22:21:57,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-25 22:21:57,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 568 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-25 22:21:57,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:21:57,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-25 22:22:01,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 568 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-25 22:22:01,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:01,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-25 22:22:02,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:02,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:02,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:22:02,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-25 22:22:33,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:22:33,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:22:34,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-25 22:22:34,559 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:22:34,575 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:22:34,588 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:23:04,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-25 22:23:04,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:04,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:05,330 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:23:05,345 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:23:05,375 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:23:08,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:09,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:09,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-25 22:23:10,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:11,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:11,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-25 22:23:32,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:32,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:33,476 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:23:33,489 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:23:49,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:49,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:23:50,289 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:23:50,314 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:23:59,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-25 22:24:01,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-25 22:24:45,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:24:45,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:24:45,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-25 22:24:46,092 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:24:46,097 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:24:46,125 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:25:10,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-25 22:25:10,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:25:10,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 22:25:11,163 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:25:11,204 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:25:11,207 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 22:26:52,273 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 570 for LOIs [2022-11-25 22:26:53,017 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 136 for LOIs [2022-11-25 22:26:53,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 22:26:53,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 22:26:54,822 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 157 for LOIs [2022-11-25 22:26:54,876 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 164 for LOIs [2022-11-25 22:26:55,037 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 569 for LOIs [2022-11-25 22:26:57,601 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:27:11,128 WARN L233 SmtUtils]: Spent 13.38s on a formula simplification. DAG size of input: 1073 DAG size of output: 675 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:27:43,193 WARN L233 SmtUtils]: Spent 23.76s on a formula simplification. DAG size of input: 995 DAG size of output: 888 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:28:07,980 WARN L233 SmtUtils]: Spent 24.30s on a formula simplification. DAG size of input: 999 DAG size of output: 899 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:28:24,754 WARN L233 SmtUtils]: Spent 16.31s on a formula simplification. DAG size of input: 927 DAG size of output: 900 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:28:42,370 WARN L233 SmtUtils]: Spent 17.11s on a formula simplification. DAG size of input: 931 DAG size of output: 904 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:29:12,365 WARN L233 SmtUtils]: Spent 29.31s on a formula simplification. DAG size of input: 1036 DAG size of output: 934 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:29:41,097 WARN L233 SmtUtils]: Spent 27.99s on a formula simplification. DAG size of input: 1040 DAG size of output: 935 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:29:57,785 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 583 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:30:16,502 WARN L233 SmtUtils]: Spent 18.02s on a formula simplification. DAG size of input: 949 DAG size of output: 917 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:30:34,293 WARN L233 SmtUtils]: Spent 17.07s on a formula simplification. DAG size of input: 949 DAG size of output: 917 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:30:52,216 WARN L233 SmtUtils]: Spent 17.16s on a formula simplification. DAG size of input: 953 DAG size of output: 921 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:31:10,193 WARN L233 SmtUtils]: Spent 17.20s on a formula simplification. DAG size of input: 953 DAG size of output: 921 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:31:41,955 WARN L233 SmtUtils]: Spent 30.80s on a formula simplification. DAG size of input: 1072 DAG size of output: 978 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:32:12,658 WARN L233 SmtUtils]: Spent 29.69s on a formula simplification. DAG size of input: 1076 DAG size of output: 968 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:32:32,331 WARN L233 SmtUtils]: Spent 18.77s on a formula simplification. DAG size of input: 990 DAG size of output: 953 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:32:52,050 WARN L233 SmtUtils]: Spent 18.80s on a formula simplification. DAG size of input: 994 DAG size of output: 957 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:33:01,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [27689534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:33:01,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:33:01,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [5, 4, 5] total 40 [2022-11-25 22:33:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061838140] [2022-11-25 22:33:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:33:01,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 22:33:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:33:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 22:33:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 22:33:01,802 INFO L87 Difference]: Start difference. First operand 1572 states and 2255 transitions. Second operand has 32 states, 19 states have (on average 4.368421052631579) internal successors, (83), 17 states have internal predecessors, (83), 11 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (25), 10 states have call predecessors, (25), 11 states have call successors, (25) [2022-11-25 22:33:28,772 WARN L233 SmtUtils]: Spent 18.31s on a formula simplification. DAG size of input: 960 DAG size of output: 935 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:33:47,576 WARN L233 SmtUtils]: Spent 18.09s on a formula simplification. DAG size of input: 960 DAG size of output: 935 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:07,098 WARN L233 SmtUtils]: Spent 18.18s on a formula simplification. DAG size of input: 964 DAG size of output: 939 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:25,915 WARN L233 SmtUtils]: Spent 18.17s on a formula simplification. DAG size of input: 964 DAG size of output: 939 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)