./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 04:47:28,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:47:28,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:47:28,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:47:28,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:47:28,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:47:28,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:47:28,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:47:28,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:47:28,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:47:28,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:47:28,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:47:28,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:47:28,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:47:28,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:47:28,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:47:28,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:47:28,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:47:28,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:47:28,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:47:28,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:47:28,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:47:28,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:47:28,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:47:28,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:47:28,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:47:28,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:47:28,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:47:28,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:47:28,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:47:28,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:47:28,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:47:28,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:47:28,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:47:28,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:47:28,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:47:28,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:47:28,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:47:28,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:47:28,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:47:28,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:47:28,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:47:28,101 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:47:28,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:47:28,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:47:28,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:47:28,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:47:28,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:47:28,103 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:47:28,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:47:28,103 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:47:28,104 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:47:28,104 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:47:28,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:47:28,104 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:47:28,104 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:47:28,104 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:47:28,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:47:28,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:47:28,105 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:47:28,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:47:28,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:47:28,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:47:28,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:47:28,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:47:28,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:47:28,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:47:28,107 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:47:28,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:47:28,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:47:28,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:47:28,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:47:28,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:47:28,108 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:47:28,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:47:28,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:47:28,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:47:28,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:47:28,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:47:28,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:47:28,110 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_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 [2022-12-14 04:47:28,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:47:28,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:47:28,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:47:28,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:47:28,337 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:47:28,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-12-14 04:47:30,921 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:47:31,240 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:47:31,241 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-12-14 04:47:31,259 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/data/6b3d8d6f4/634e4300b2904b379e754704ecc539fe/FLAGf51ec623e [2022-12-14 04:47:31,498 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/data/6b3d8d6f4/634e4300b2904b379e754704ecc539fe [2022-12-14 04:47:31,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:47:31,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:47:31,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:47:31,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:47:31,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:47:31,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:47:31" (1/1) ... [2022-12-14 04:47:31,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25721af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:31, skipping insertion in model container [2022-12-14 04:47:31,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:47:31" (1/1) ... [2022-12-14 04:47:31,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:47:31,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:47:31,984 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 04:47:32,088 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:47:32,089 WARN L623 FunctionHandler]: Unknown extern function schedule_delayed_work [2022-12-14 04:47:32,090 WARN L623 FunctionHandler]: Unknown extern function schedule_delayed_work [2022-12-14 04:47:32,092 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:47:32,099 WARN L623 FunctionHandler]: Unknown extern function schedule_delayed_work [2022-12-14 04:47:32,099 WARN L623 FunctionHandler]: Unknown extern function schedule_delayed_work [2022-12-14 04:47:32,158 WARN L623 FunctionHandler]: Unknown extern function pi_read_regr [2022-12-14 04:47:32,161 WARN L623 FunctionHandler]: Unknown extern function pi_read_regr [2022-12-14 04:47:32,164 WARN L623 FunctionHandler]: Unknown extern function pi_write_regr [2022-12-14 04:47:32,167 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,169 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,172 WARN L623 FunctionHandler]: Unknown extern function pi_connect [2022-12-14 04:47:32,173 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,174 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,175 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,175 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,176 WARN L623 FunctionHandler]: Unknown extern function pi_write_block [2022-12-14 04:47:32,180 WARN L623 FunctionHandler]: Unknown extern function pi_read_block [2022-12-14 04:47:32,180 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,185 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,185 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,186 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,190 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,191 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,200 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-14 04:47:32,203 WARN L623 FunctionHandler]: Unknown extern function pi_connect [2022-12-14 04:47:32,205 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,205 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,206 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,206 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,207 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,223 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,227 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,228 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,229 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,229 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,229 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,230 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,236 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,237 WARN L623 FunctionHandler]: Unknown extern function pi_init [2022-12-14 04:47:32,238 WARN L623 FunctionHandler]: Unknown extern function pi_release [2022-12-14 04:47:32,239 WARN L623 FunctionHandler]: Unknown extern function pi_init [2022-12-14 04:47:32,240 WARN L623 FunctionHandler]: Unknown extern function pi_release [2022-12-14 04:47:32,241 WARN L623 FunctionHandler]: Unknown extern function pi_release [2022-12-14 04:47:32,242 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,242 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 04:47:32,247 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,247 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,252 WARN L623 FunctionHandler]: Unknown extern function __blk_end_request_cur [2022-12-14 04:47:32,253 WARN L623 FunctionHandler]: Unknown extern function blk_fetch_request [2022-12-14 04:47:32,256 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,256 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,259 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:47:32,263 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:47:32,263 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,264 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,265 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,265 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,266 WARN L623 FunctionHandler]: Unknown extern function pi_read_block [2022-12-14 04:47:32,266 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,267 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,267 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,268 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,268 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,269 WARN L623 FunctionHandler]: Unknown extern function pi_write_block [2022-12-14 04:47:32,270 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,270 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,271 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,273 WARN L623 FunctionHandler]: Unknown extern function register_blkdev [2022-12-14 04:47:32,274 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 04:47:32,274 WARN L623 FunctionHandler]: Unknown extern function blk_init_queue [2022-12-14 04:47:32,275 WARN L623 FunctionHandler]: Unknown extern function unregister_blkdev [2022-12-14 04:47:32,275 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 04:47:32,276 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_segments [2022-12-14 04:47:32,276 WARN L623 FunctionHandler]: Unknown extern function add_disk [2022-12-14 04:47:32,279 WARN L623 FunctionHandler]: Unknown extern function unregister_blkdev [2022-12-14 04:47:32,279 WARN L623 FunctionHandler]: Unknown extern function del_gendisk [2022-12-14 04:47:32,280 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 04:47:32,280 WARN L623 FunctionHandler]: Unknown extern function pi_release [2022-12-14 04:47:32,281 WARN L623 FunctionHandler]: Unknown extern function blk_cleanup_queue [2022-12-14 04:47:32,291 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,292 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,292 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,293 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,293 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,293 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 04:47:32,294 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,294 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,295 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,295 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,295 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,296 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,296 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,297 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,302 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_dd586701-5fa5-4e2d-a996-552a9c30c1e1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2022-12-14 04:47:32,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:47:32,402 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:47:32,457 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock_irqrestore [2022-12-14 04:47:32,465 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:47:32,466 WARN L623 FunctionHandler]: Unknown extern function schedule_delayed_work [2022-12-14 04:47:32,466 WARN L623 FunctionHandler]: Unknown extern function schedule_delayed_work [2022-12-14 04:47:32,467 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:47:32,468 WARN L623 FunctionHandler]: Unknown extern function schedule_delayed_work [2022-12-14 04:47:32,468 WARN L623 FunctionHandler]: Unknown extern function schedule_delayed_work [2022-12-14 04:47:32,477 WARN L623 FunctionHandler]: Unknown extern function pi_read_regr [2022-12-14 04:47:32,477 WARN L623 FunctionHandler]: Unknown extern function pi_read_regr [2022-12-14 04:47:32,478 WARN L623 FunctionHandler]: Unknown extern function pi_write_regr [2022-12-14 04:47:32,478 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,479 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,480 WARN L623 FunctionHandler]: Unknown extern function pi_connect [2022-12-14 04:47:32,480 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,481 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,481 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,481 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,482 WARN L623 FunctionHandler]: Unknown extern function pi_write_block [2022-12-14 04:47:32,483 WARN L623 FunctionHandler]: Unknown extern function pi_read_block [2022-12-14 04:47:32,483 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,485 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,485 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,486 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,487 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,487 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,491 WARN L623 FunctionHandler]: Unknown extern function schedule_timeout_interruptible [2022-12-14 04:47:32,492 WARN L623 FunctionHandler]: Unknown extern function pi_connect [2022-12-14 04:47:32,493 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,494 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,494 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,494 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,495 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,500 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,503 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,504 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,504 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,504 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,505 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,505 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,508 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,508 WARN L623 FunctionHandler]: Unknown extern function pi_init [2022-12-14 04:47:32,509 WARN L623 FunctionHandler]: Unknown extern function pi_release [2022-12-14 04:47:32,510 WARN L623 FunctionHandler]: Unknown extern function pi_init [2022-12-14 04:47:32,511 WARN L623 FunctionHandler]: Unknown extern function pi_release [2022-12-14 04:47:32,511 WARN L623 FunctionHandler]: Unknown extern function pi_release [2022-12-14 04:47:32,511 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-14 04:47:32,512 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 04:47:32,514 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,514 WARN L623 FunctionHandler]: Unknown extern function __const_udelay [2022-12-14 04:47:32,515 WARN L623 FunctionHandler]: Unknown extern function __blk_end_request_cur [2022-12-14 04:47:32,516 WARN L623 FunctionHandler]: Unknown extern function blk_fetch_request [2022-12-14 04:47:32,517 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,517 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,518 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:47:32,519 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock_irqsave [2022-12-14 04:47:32,520 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,520 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,521 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,521 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,522 WARN L623 FunctionHandler]: Unknown extern function pi_read_block [2022-12-14 04:47:32,522 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,523 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,523 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,523 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,524 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,524 WARN L623 FunctionHandler]: Unknown extern function pi_write_block [2022-12-14 04:47:32,525 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,525 WARN L623 FunctionHandler]: Unknown extern function pi_do_claimed [2022-12-14 04:47:32,525 WARN L623 FunctionHandler]: Unknown extern function pi_disconnect [2022-12-14 04:47:32,526 WARN L623 FunctionHandler]: Unknown extern function register_blkdev [2022-12-14 04:47:32,526 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 04:47:32,527 WARN L623 FunctionHandler]: Unknown extern function blk_init_queue [2022-12-14 04:47:32,529 WARN L623 FunctionHandler]: Unknown extern function unregister_blkdev [2022-12-14 04:47:32,530 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 04:47:32,530 WARN L623 FunctionHandler]: Unknown extern function blk_queue_max_segments [2022-12-14 04:47:32,533 WARN L623 FunctionHandler]: Unknown extern function add_disk [2022-12-14 04:47:32,534 WARN L623 FunctionHandler]: Unknown extern function unregister_blkdev [2022-12-14 04:47:32,534 WARN L623 FunctionHandler]: Unknown extern function del_gendisk [2022-12-14 04:47:32,534 WARN L623 FunctionHandler]: Unknown extern function put_disk [2022-12-14 04:47:32,534 WARN L623 FunctionHandler]: Unknown extern function pi_release [2022-12-14 04:47:32,535 WARN L623 FunctionHandler]: Unknown extern function blk_cleanup_queue [2022-12-14 04:47:32,537 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,538 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,538 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,538 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,538 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,538 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-12-14 04:47:32,539 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,539 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,539 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,540 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,540 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,540 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-12-14 04:47:32,540 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,541 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-14 04:47:32,541 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_dd586701-5fa5-4e2d-a996-552a9c30c1e1/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2022-12-14 04:47:32,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:47:32,578 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:47:32,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32 WrapperNode [2022-12-14 04:47:32,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:47:32,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:47:32,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:47:32,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:47:32,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,647 INFO L138 Inliner]: procedures = 161, calls = 831, calls flagged for inlining = 53, calls inlined = 28, statements flattened = 1123 [2022-12-14 04:47:32,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:47:32,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:47:32,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:47:32,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:47:32,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,735 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:47:32,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:47:32,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:47:32,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:47:32,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (1/1) ... [2022-12-14 04:47:32,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:47:32,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:32,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:47:32,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:47:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2022-12-14 04:47:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure pf_getgeo [2022-12-14 04:47:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_getgeo [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2022-12-14 04:47:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2022-12-14 04:47:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2022-12-14 04:47:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pf_mutex [2022-12-14 04:47:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pf_mutex [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure pf_reset [2022-12-14 04:47:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_reset [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:47:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2022-12-14 04:47:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2022-12-14 04:47:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure pf_wait [2022-12-14 04:47:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_wait [2022-12-14 04:47:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2022-12-14 04:47:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2022-12-14 04:47:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 04:47:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 04:47:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pf_mutex [2022-12-14 04:47:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pf_mutex [2022-12-14 04:47:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure pf_check_events [2022-12-14 04:47:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_check_events [2022-12-14 04:47:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-12-14 04:47:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-12-14 04:47:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:47:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-12-14 04:47:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-12-14 04:47:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-14 04:47:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-14 04:47:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-12-14 04:47:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-12-14 04:47:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure pf_req_sense [2022-12-14 04:47:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_req_sense [2022-12-14 04:47:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure pf_completion [2022-12-14 04:47:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_completion [2022-12-14 04:47:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:47:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-12-14 04:47:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-12-14 04:47:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:47:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-12-14 04:47:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-12-14 04:47:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:47:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:47:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure pf_atapi [2022-12-14 04:47:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_atapi [2022-12-14 04:47:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure pf_command [2022-12-14 04:47:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_command [2022-12-14 04:47:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure pf_probe [2022-12-14 04:47:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_probe [2022-12-14 04:47:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:47:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure pf_identify [2022-12-14 04:47:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_identify [2022-12-14 04:47:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure pf_sleep [2022-12-14 04:47:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_sleep [2022-12-14 04:47:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure pf_mode_sense [2022-12-14 04:47:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_mode_sense [2022-12-14 04:47:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2022-12-14 04:47:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2022-12-14 04:47:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:47:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 04:47:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2022-12-14 04:47:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2022-12-14 04:47:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2022-12-14 04:47:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2022-12-14 04:47:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2022-12-14 04:47:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2022-12-14 04:47:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-12-14 04:47:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-12-14 04:47:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2022-12-14 04:47:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2022-12-14 04:47:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure pf_lock [2022-12-14 04:47:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_lock [2022-12-14 04:47:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:47:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure xl [2022-12-14 04:47:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure xl [2022-12-14 04:47:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:47:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:47:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2022-12-14 04:47:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2022-12-14 04:47:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure pf_ioctl [2022-12-14 04:47:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_ioctl [2022-12-14 04:47:33,070 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:47:33,072 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:47:35,611 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:47:35,861 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:47:35,861 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 04:47:35,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:47:35 BoogieIcfgContainer [2022-12-14 04:47:35,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:47:35,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:47:35,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:47:35,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:47:35,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:47:31" (1/3) ... [2022-12-14 04:47:35,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659cbec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:47:35, skipping insertion in model container [2022-12-14 04:47:35,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:47:32" (2/3) ... [2022-12-14 04:47:35,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659cbec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:47:35, skipping insertion in model container [2022-12-14 04:47:35,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:47:35" (3/3) ... [2022-12-14 04:47:35,870 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-12-14 04:47:35,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:47:35,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:47:35,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:47:35,929 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;@1c3c9b38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:47:35,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:47:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 250 states have (on average 1.38) internal successors, (345), 264 states have internal predecessors, (345), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-12-14 04:47:35,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 04:47:35,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:35,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:35,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -597164834, now seen corresponding path program 1 times [2022-12-14 04:47:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:35,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243713607] [2022-12-14 04:47:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:36,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:36,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243713607] [2022-12-14 04:47:36,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243713607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:36,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:36,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:47:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348435022] [2022-12-14 04:47:36,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:36,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:36,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:36,281 INFO L87 Difference]: Start difference. First operand has 399 states, 250 states have (on average 1.38) internal successors, (345), 264 states have internal predecessors, (345), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:37,114 INFO L93 Difference]: Finished difference Result 1090 states and 1591 transitions. [2022-12-14 04:47:37,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 04:47:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:37,133 INFO L225 Difference]: With dead ends: 1090 [2022-12-14 04:47:37,133 INFO L226 Difference]: Without dead ends: 688 [2022-12-14 04:47:37,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:37,143 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 411 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:37,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1142 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 04:47:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-12-14 04:47:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 675. [2022-12-14 04:47:37,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 423 states have (on average 1.3593380614657211) internal successors, (575), 436 states have internal predecessors, (575), 187 states have call successors, (187), 65 states have call predecessors, (187), 64 states have return successors, (181), 181 states have call predecessors, (181), 181 states have call successors, (181) [2022-12-14 04:47:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 943 transitions. [2022-12-14 04:47:37,217 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 943 transitions. Word has length 14 [2022-12-14 04:47:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:37,217 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 943 transitions. [2022-12-14 04:47:37,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 943 transitions. [2022-12-14 04:47:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 04:47:37,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:37,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:37,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:47:37,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1658584533, now seen corresponding path program 1 times [2022-12-14 04:47:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:37,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024131696] [2022-12-14 04:47:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:37,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:37,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024131696] [2022-12-14 04:47:37,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024131696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:37,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:37,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:47:37,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126590913] [2022-12-14 04:47:37,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:37,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:37,326 INFO L87 Difference]: Start difference. First operand 675 states and 943 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:37,703 INFO L93 Difference]: Finished difference Result 1349 states and 1885 transitions. [2022-12-14 04:47:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 04:47:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:37,709 INFO L225 Difference]: With dead ends: 1349 [2022-12-14 04:47:37,709 INFO L226 Difference]: Without dead ends: 675 [2022-12-14 04:47:37,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:37,713 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 538 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:37,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 475 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:47:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-12-14 04:47:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2022-12-14 04:47:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 423 states have (on average 1.3546099290780143) internal successors, (573), 436 states have internal predecessors, (573), 187 states have call successors, (187), 65 states have call predecessors, (187), 64 states have return successors, (181), 181 states have call predecessors, (181), 181 states have call successors, (181) [2022-12-14 04:47:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 941 transitions. [2022-12-14 04:47:37,771 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 941 transitions. Word has length 15 [2022-12-14 04:47:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:37,771 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 941 transitions. [2022-12-14 04:47:37,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 941 transitions. [2022-12-14 04:47:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 04:47:37,772 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:37,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:37,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:47:37,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:37,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1610524676, now seen corresponding path program 1 times [2022-12-14 04:47:37,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:37,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147279578] [2022-12-14 04:47:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:37,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:37,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:37,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147279578] [2022-12-14 04:47:37,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147279578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:37,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:37,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:47:37,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352149570] [2022-12-14 04:47:37,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:37,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:37,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:37,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:37,908 INFO L87 Difference]: Start difference. First operand 675 states and 941 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 04:47:38,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:38,544 INFO L93 Difference]: Finished difference Result 1520 states and 2098 transitions. [2022-12-14 04:47:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:38,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-14 04:47:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:38,550 INFO L225 Difference]: With dead ends: 1520 [2022-12-14 04:47:38,550 INFO L226 Difference]: Without dead ends: 846 [2022-12-14 04:47:38,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:38,554 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 375 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:38,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 964 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 04:47:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-12-14 04:47:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 564. [2022-12-14 04:47:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 347 states have (on average 1.340057636887608) internal successors, (465), 359 states have internal predecessors, (465), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-12-14 04:47:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 773 transitions. [2022-12-14 04:47:38,608 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 773 transitions. Word has length 16 [2022-12-14 04:47:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:38,608 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 773 transitions. [2022-12-14 04:47:38,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 04:47:38,609 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 773 transitions. [2022-12-14 04:47:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 04:47:38,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:38,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 04:47:38,610 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash -528364659, now seen corresponding path program 1 times [2022-12-14 04:47:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:38,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995371555] [2022-12-14 04:47:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:38,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:38,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995371555] [2022-12-14 04:47:38,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995371555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:38,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:47:38,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:47:38,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687493233] [2022-12-14 04:47:38,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:38,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:38,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:38,687 INFO L87 Difference]: Start difference. First operand 564 states and 773 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:39,334 INFO L93 Difference]: Finished difference Result 1125 states and 1543 transitions. [2022-12-14 04:47:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:39,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 04:47:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:39,337 INFO L225 Difference]: With dead ends: 1125 [2022-12-14 04:47:39,337 INFO L226 Difference]: Without dead ends: 571 [2022-12-14 04:47:39,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:47:39,339 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 9 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:39,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 945 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 04:47:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-14 04:47:39,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2022-12-14 04:47:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 348 states have (on average 1.339080459770115) internal successors, (466), 360 states have internal predecessors, (466), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-12-14 04:47:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 774 transitions. [2022-12-14 04:47:39,364 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 774 transitions. Word has length 21 [2022-12-14 04:47:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:39,364 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 774 transitions. [2022-12-14 04:47:39,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 774 transitions. [2022-12-14 04:47:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 04:47:39,365 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:39,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:39,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:47:39,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 824586966, now seen corresponding path program 1 times [2022-12-14 04:47:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:39,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11317211] [2022-12-14 04:47:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:39,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:39,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:39,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11317211] [2022-12-14 04:47:39,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11317211] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:39,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079046347] [2022-12-14 04:47:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:39,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:39,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:39,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:39,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:47:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:39,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 04:47:39,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:39,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:39,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079046347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:39,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:47:39,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 04:47:39,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896197695] [2022-12-14 04:47:39,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:39,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:39,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:39,745 INFO L87 Difference]: Start difference. First operand 565 states and 774 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:40,430 INFO L93 Difference]: Finished difference Result 1137 states and 1562 transitions. [2022-12-14 04:47:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 04:47:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:40,434 INFO L225 Difference]: With dead ends: 1137 [2022-12-14 04:47:40,434 INFO L226 Difference]: Without dead ends: 582 [2022-12-14 04:47:40,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:40,437 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 14 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:40,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 964 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 04:47:40,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-12-14 04:47:40,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 567. [2022-12-14 04:47:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 350 states have (on average 1.3371428571428572) internal successors, (468), 362 states have internal predecessors, (468), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-12-14 04:47:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 776 transitions. [2022-12-14 04:47:40,472 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 776 transitions. Word has length 24 [2022-12-14 04:47:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:40,473 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 776 transitions. [2022-12-14 04:47:40,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:40,473 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 776 transitions. [2022-12-14 04:47:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 04:47:40,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:40,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:40,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:47:40,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:40,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash -508896881, now seen corresponding path program 1 times [2022-12-14 04:47:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:40,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449871847] [2022-12-14 04:47:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:40,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:40,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449871847] [2022-12-14 04:47:40,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449871847] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089833677] [2022-12-14 04:47:40,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:40,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:40,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:40,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:47:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:41,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:47:41,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:47:41,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:41,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089833677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:41,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:47:41,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 04:47:41,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671731167] [2022-12-14 04:47:41,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:41,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:41,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:41,048 INFO L87 Difference]: Start difference. First operand 567 states and 776 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:41,710 INFO L93 Difference]: Finished difference Result 1657 states and 2262 transitions. [2022-12-14 04:47:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:41,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 04:47:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:41,717 INFO L225 Difference]: With dead ends: 1657 [2022-12-14 04:47:41,717 INFO L226 Difference]: Without dead ends: 1100 [2022-12-14 04:47:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:41,720 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 515 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1033 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 04:47:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2022-12-14 04:47:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 783. [2022-12-14 04:47:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 479 states have (on average 1.3194154488517744) internal successors, (632), 494 states have internal predecessors, (632), 219 states have call successors, (219), 85 states have call predecessors, (219), 84 states have return successors, (213), 213 states have call predecessors, (213), 213 states have call successors, (213) [2022-12-14 04:47:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1064 transitions. [2022-12-14 04:47:41,789 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1064 transitions. Word has length 27 [2022-12-14 04:47:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:41,790 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1064 transitions. [2022-12-14 04:47:41,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:47:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1064 transitions. [2022-12-14 04:47:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 04:47:41,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:41,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:41,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:47:41,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:41,992 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash -294326592, now seen corresponding path program 1 times [2022-12-14 04:47:41,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:41,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537214173] [2022-12-14 04:47:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:41,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:47:42,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:42,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537214173] [2022-12-14 04:47:42,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537214173] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:42,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754347154] [2022-12-14 04:47:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:42,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:42,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:42,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:42,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:47:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:42,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:47:42,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:42,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:42,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754347154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:42,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:47:42,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 04:47:42,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823222030] [2022-12-14 04:47:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:42,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:42,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:42,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:42,395 INFO L87 Difference]: Start difference. First operand 783 states and 1064 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 04:47:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:43,013 INFO L93 Difference]: Finished difference Result 1688 states and 2333 transitions. [2022-12-14 04:47:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:43,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-12-14 04:47:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:43,019 INFO L225 Difference]: With dead ends: 1688 [2022-12-14 04:47:43,019 INFO L226 Difference]: Without dead ends: 915 [2022-12-14 04:47:43,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:43,023 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 138 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:43,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 986 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 04:47:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-12-14 04:47:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 798. [2022-12-14 04:47:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 490 states have (on average 1.3224489795918368) internal successors, (648), 505 states have internal predecessors, (648), 223 states have call successors, (223), 85 states have call predecessors, (223), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-12-14 04:47:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1088 transitions. [2022-12-14 04:47:43,057 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1088 transitions. Word has length 28 [2022-12-14 04:47:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:43,058 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1088 transitions. [2022-12-14 04:47:43,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 04:47:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1088 transitions. [2022-12-14 04:47:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 04:47:43,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:43,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:43,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 04:47:43,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 04:47:43,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:43,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:43,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1215571785, now seen corresponding path program 1 times [2022-12-14 04:47:43,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:43,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162553747] [2022-12-14 04:47:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:43,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:43,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:43,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162553747] [2022-12-14 04:47:43,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162553747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664563370] [2022-12-14 04:47:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:43,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:43,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:43,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:43,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:47:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:43,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:47:43,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:47:43,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:43,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664563370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:43,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:47:43,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 04:47:43,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530138625] [2022-12-14 04:47:43,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:43,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:43,626 INFO L87 Difference]: Start difference. First operand 798 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:47:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:44,006 INFO L93 Difference]: Finished difference Result 800 states and 1089 transitions. [2022-12-14 04:47:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-12-14 04:47:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:44,010 INFO L225 Difference]: With dead ends: 800 [2022-12-14 04:47:44,010 INFO L226 Difference]: Without dead ends: 797 [2022-12-14 04:47:44,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:44,011 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 513 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:44,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 473 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:47:44,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-12-14 04:47:44,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2022-12-14 04:47:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 490 states have (on average 1.3204081632653062) internal successors, (647), 504 states have internal predecessors, (647), 222 states have call successors, (222), 85 states have call predecessors, (222), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-12-14 04:47:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1086 transitions. [2022-12-14 04:47:44,073 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1086 transitions. Word has length 34 [2022-12-14 04:47:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:44,074 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1086 transitions. [2022-12-14 04:47:44,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:47:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1086 transitions. [2022-12-14 04:47:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 04:47:44,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:44,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:44,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 04:47:44,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 04:47:44,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:44,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash -972281035, now seen corresponding path program 1 times [2022-12-14 04:47:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:44,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194440290] [2022-12-14 04:47:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:44,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:44,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:44,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194440290] [2022-12-14 04:47:44,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194440290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:44,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464816004] [2022-12-14 04:47:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:44,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:44,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:44,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:44,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:47:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:44,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:47:44,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:47:44,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:44,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464816004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:44,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:47:44,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 04:47:44,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371925270] [2022-12-14 04:47:44,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:44,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:44,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:44,675 INFO L87 Difference]: Start difference. First operand 797 states and 1086 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:47:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:44,966 INFO L93 Difference]: Finished difference Result 799 states and 1087 transitions. [2022-12-14 04:47:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-12-14 04:47:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:44,972 INFO L225 Difference]: With dead ends: 799 [2022-12-14 04:47:44,972 INFO L226 Difference]: Without dead ends: 796 [2022-12-14 04:47:44,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:44,973 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 510 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:44,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 471 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:47:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-12-14 04:47:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2022-12-14 04:47:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 490 states have (on average 1.3183673469387756) internal successors, (646), 503 states have internal predecessors, (646), 221 states have call successors, (221), 85 states have call predecessors, (221), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-12-14 04:47:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1084 transitions. [2022-12-14 04:47:45,025 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1084 transitions. Word has length 35 [2022-12-14 04:47:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:45,025 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1084 transitions. [2022-12-14 04:47:45,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:47:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1084 transitions. [2022-12-14 04:47:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 04:47:45,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:45,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:45,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 04:47:45,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:45,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash -76236852, now seen corresponding path program 1 times [2022-12-14 04:47:45,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:45,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354914122] [2022-12-14 04:47:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:45,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:45,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:45,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354914122] [2022-12-14 04:47:45,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354914122] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:45,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090195754] [2022-12-14 04:47:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:45,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:45,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:45,393 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:45,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 04:47:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:45,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:47:45,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:47:45,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:45,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090195754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:45,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:47:45,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 04:47:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716958398] [2022-12-14 04:47:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:45,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:45,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:45,678 INFO L87 Difference]: Start difference. First operand 796 states and 1084 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:47:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:46,026 INFO L93 Difference]: Finished difference Result 798 states and 1085 transitions. [2022-12-14 04:47:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:46,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-12-14 04:47:46,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:46,030 INFO L225 Difference]: With dead ends: 798 [2022-12-14 04:47:46,030 INFO L226 Difference]: Without dead ends: 795 [2022-12-14 04:47:46,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:46,031 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 507 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:46,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 469 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:47:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-12-14 04:47:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-12-14 04:47:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 490 states have (on average 1.316326530612245) internal successors, (645), 502 states have internal predecessors, (645), 220 states have call successors, (220), 85 states have call predecessors, (220), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-12-14 04:47:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1082 transitions. [2022-12-14 04:47:46,090 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1082 transitions. Word has length 36 [2022-12-14 04:47:46,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:46,090 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1082 transitions. [2022-12-14 04:47:46,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:47:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1082 transitions. [2022-12-14 04:47:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 04:47:46,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:46,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:47:46,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 04:47:46,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 04:47:46,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:46,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1931333912, now seen corresponding path program 1 times [2022-12-14 04:47:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:46,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955873307] [2022-12-14 04:47:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:46,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:46,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:46,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955873307] [2022-12-14 04:47:46,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955873307] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:46,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915728084] [2022-12-14 04:47:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:46,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:46,404 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:46,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:47:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:46,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:47:46,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 04:47:46,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:47:46,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915728084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:47:46,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:47:46,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-14 04:47:46,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588368872] [2022-12-14 04:47:46,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:47:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:47:46,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:47:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:47:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:46,622 INFO L87 Difference]: Start difference. First operand 795 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:47:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:47:47,087 INFO L93 Difference]: Finished difference Result 799 states and 1084 transitions. [2022-12-14 04:47:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:47:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-12-14 04:47:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:47:47,090 INFO L225 Difference]: With dead ends: 799 [2022-12-14 04:47:47,090 INFO L226 Difference]: Without dead ends: 775 [2022-12-14 04:47:47,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 04:47:47,091 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 450 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:47:47,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 846 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 04:47:47,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-12-14 04:47:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2022-12-14 04:47:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 477 states have (on average 1.3123689727463312) internal successors, (626), 487 states have internal predecessors, (626), 215 states have call successors, (215), 83 states have call predecessors, (215), 82 states have return successors, (214), 214 states have call predecessors, (214), 214 states have call successors, (214) [2022-12-14 04:47:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1055 transitions. [2022-12-14 04:47:47,130 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1055 transitions. Word has length 37 [2022-12-14 04:47:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:47:47,131 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 1055 transitions. [2022-12-14 04:47:47,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 04:47:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1055 transitions. [2022-12-14 04:47:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 04:47:47,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:47:47,132 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 04:47:47,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 04:47:47,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:47,333 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:47:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:47:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2134699375, now seen corresponding path program 1 times [2022-12-14 04:47:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:47:47,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678943947] [2022-12-14 04:47:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:47,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:47:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:47,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:47:47,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678943947] [2022-12-14 04:47:47,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678943947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:47:47,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022428732] [2022-12-14 04:47:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:47:47,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:47:47,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:47:47,428 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:47:47,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 04:47:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:47:47,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:47:47,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:47:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:47,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:47:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:47:47,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022428732] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:47:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1859318471] [2022-12-14 04:47:47,725 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-12-14 04:47:47,725 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:47:47,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:47:47,733 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:47:47,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:47:48,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 231 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 0 case distinctions, treesize of input 1079 treesize of output 922 [2022-12-14 04:47:48,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 374 [2022-12-14 04:47:48,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 338 [2022-12-14 04:47:55,994 INFO L321 Elim1Store]: treesize reduction 600, result has 47.4 percent of original size [2022-12-14 04:47:55,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 60 select indices, 60 select index equivalence classes, 1771 disjoint index pairs (out of 1770 index pairs), introduced 60 new quantified variables, introduced 60 case distinctions, treesize of input 307 treesize of output 726 [2022-12-14 04:47:59,076 INFO L321 Elim1Store]: treesize reduction 1080, result has 33.4 percent of original size [2022-12-14 04:47:59,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1831 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 120 case distinctions, treesize of input 317 treesize of output 737 [2022-12-14 04:48:09,091 INFO L321 Elim1Store]: treesize reduction 1330, result has 18.9 percent of original size [2022-12-14 04:48:09,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1771 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 121 case distinctions, treesize of input 6263 treesize of output 6329 [2022-12-14 04:48:12,290 INFO L321 Elim1Store]: treesize reduction 1818, result has 14.9 percent of original size [2022-12-14 04:48:12,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1831 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 183 case distinctions, treesize of input 6266 treesize of output 6339 [2022-12-14 04:48:43,631 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 6 treesize of output 5 [2022-12-14 04:48:43,654 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 [2022-12-14 04:48:57,286 INFO L321 Elim1Store]: treesize reduction 1080, result has 33.4 percent of original size [2022-12-14 04:48:57,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1831 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 120 case distinctions, treesize of input 317 treesize of output 737 [2022-12-14 04:48:57,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 60 select indices, 60 select index equivalence classes, 1831 disjoint index pairs (out of 1770 index pairs), introduced 60 new quantified variables, introduced 0 case distinctions, treesize of input 307 treesize of output 486 [2022-12-14 04:49:07,210 INFO L321 Elim1Store]: treesize reduction 1330, result has 18.9 percent of original size [2022-12-14 04:49:07,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1771 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 121 case distinctions, treesize of input 6263 treesize of output 6329 [2022-12-14 04:49:10,476 INFO L321 Elim1Store]: treesize reduction 1818, result has 14.9 percent of original size [2022-12-14 04:49:10,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1831 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 183 case distinctions, treesize of input 6266 treesize of output 6339 [2022-12-14 04:49:38,631 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 [2022-12-14 04:49:38,643 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 6 treesize of output 5 [2022-12-14 04:49:38,901 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 [2022-12-14 04:49:38,919 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 6 treesize of output 5 [2022-12-14 04:49:47,924 INFO L197 IcfgInterpreter]: Interpreting procedure put_disk with input of size 178 for LOIs [2022-12-14 04:49:47,937 INFO L197 IcfgInterpreter]: Interpreting procedure pi_init with input of size 224 for LOIs [2022-12-14 04:49:47,966 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:54,095 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 1222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:00,668 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 1235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:07,710 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification that was a NOOP. DAG size: 1237 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:13,959 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 1225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:20,078 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 1238 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:26,664 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification that was a NOOP. DAG size: 1240 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:33,574 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification that was a NOOP. DAG size: 1228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:58,739 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification that was a NOOP. DAG size: 1225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:50:58,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1859318471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:50:58,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:50:58,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2022-12-14 04:50:58,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98877075] [2022-12-14 04:50:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:50:58,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 04:50:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:50:58,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 04:50:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 04:50:58,745 INFO L87 Difference]: Start difference. First operand 775 states and 1055 transitions. Second operand has 28 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 04:51:17,843 WARN L233 SmtUtils]: Spent 18.06s on a formula simplification. DAG size of input: 1396 DAG size of output: 1260 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:51:30,814 WARN L233 SmtUtils]: Spent 12.62s on a formula simplification. DAG size of input: 1252 DAG size of output: 1249 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:51:44,847 WARN L233 SmtUtils]: Spent 13.80s on a formula simplification. DAG size of input: 1255 DAG size of output: 1252 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:52:03,457 WARN L233 SmtUtils]: Spent 17.74s on a formula simplification. DAG size of input: 1402 DAG size of output: 1266 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:52:18,647 WARN L233 SmtUtils]: Spent 14.91s on a formula simplification. DAG size of input: 1362 DAG size of output: 1273 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:52:32,886 WARN L233 SmtUtils]: Spent 14.02s on a formula simplification. DAG size of input: 1265 DAG size of output: 1264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:52:46,853 WARN L233 SmtUtils]: Spent 13.75s on a formula simplification. DAG size of input: 1299 DAG size of output: 1298 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:53:01,168 WARN L233 SmtUtils]: Spent 14.01s on a formula simplification. DAG size of input: 1280 DAG size of output: 1265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:53:17,317 WARN L233 SmtUtils]: Spent 15.87s on a formula simplification. DAG size of input: 1310 DAG size of output: 1262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:53:31,966 WARN L233 SmtUtils]: Spent 14.33s on a formula simplification. DAG size of input: 1306 DAG size of output: 1258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:53:47,697 WARN L233 SmtUtils]: Spent 15.34s on a formula simplification. DAG size of input: 1311 DAG size of output: 1260 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:03,799 WARN L233 SmtUtils]: Spent 15.73s on a formula simplification. DAG size of input: 1322 DAG size of output: 1271 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:17,959 WARN L233 SmtUtils]: Spent 13.71s on a formula simplification. DAG size of input: 1229 DAG size of output: 1228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:32,421 WARN L233 SmtUtils]: Spent 13.56s on a formula simplification. DAG size of input: 1247 DAG size of output: 1246 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:45,880 WARN L233 SmtUtils]: Spent 13.13s on a formula simplification. DAG size of input: 1250 DAG size of output: 1249 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:59,864 WARN L233 SmtUtils]: Spent 13.76s on a formula simplification. DAG size of input: 1258 DAG size of output: 1257 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:55:13,080 WARN L233 SmtUtils]: Spent 12.84s on a formula simplification. DAG size of input: 1252 DAG size of output: 1251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:55:27,661 WARN L233 SmtUtils]: Spent 14.05s on a formula simplification. DAG size of input: 1255 DAG size of output: 1254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:55:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:55:46,630 INFO L93 Difference]: Finished difference Result 1845 states and 2498 transitions. [2022-12-14 04:55:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 04:55:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2022-12-14 04:55:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:55:46,634 INFO L225 Difference]: With dead ends: 1845 [2022-12-14 04:55:46,634 INFO L226 Difference]: Without dead ends: 1067 [2022-12-14 04:55:46,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 335.5s TimeCoverageRelationStatistics Valid=369, Invalid=2181, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 04:55:46,636 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 450 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-12-14 04:55:46,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 2264 Invalid, 2284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 22.6s Time] [2022-12-14 04:55:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-12-14 04:55:46,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1051. [2022-12-14 04:55:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 644 states have (on average 1.296583850931677) internal successors, (835), 658 states have internal predecessors, (835), 291 states have call successors, (291), 117 states have call predecessors, (291), 115 states have return successors, (290), 289 states have call predecessors, (290), 290 states have call successors, (290) [2022-12-14 04:55:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1416 transitions. [2022-12-14 04:55:46,944 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1416 transitions. Word has length 53 [2022-12-14 04:55:46,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:55:46,944 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1416 transitions. [2022-12-14 04:55:46,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 04:55:46,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1416 transitions. [2022-12-14 04:55:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 04:55:46,945 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:55:46,946 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 04:55:46,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 04:55:47,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:55:47,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:55:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:55:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash -923511183, now seen corresponding path program 1 times [2022-12-14 04:55:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:55:47,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892407182] [2022-12-14 04:55:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:55:47,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:55:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:55:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:55:47,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:55:47,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892407182] [2022-12-14 04:55:47,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892407182] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:55:47,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668052213] [2022-12-14 04:55:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:55:47,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:55:47,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:55:47,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:55:47,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd586701-5fa5-4e2d-a996-552a9c30c1e1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 04:55:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:55:47,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:55:47,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:55:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:55:47,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:55:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:55:47,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668052213] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:55:47,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [979897721] [2022-12-14 04:55:47,569 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2022-12-14 04:55:47,569 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:55:47,569 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:55:47,570 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:55:47,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:55:48,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 338 [2022-12-14 04:55:48,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 374 [2022-12-14 04:55:48,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:55:48,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 231 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 0 case distinctions, treesize of input 1079 treesize of output 922 [2022-12-14 04:55:55,627 INFO L321 Elim1Store]: treesize reduction 600, result has 47.4 percent of original size [2022-12-14 04:55:55,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 60 select indices, 60 select index equivalence classes, 1771 disjoint index pairs (out of 1770 index pairs), introduced 60 new quantified variables, introduced 60 case distinctions, treesize of input 307 treesize of output 726 [2022-12-14 04:55:58,873 INFO L321 Elim1Store]: treesize reduction 1080, result has 33.4 percent of original size [2022-12-14 04:55:58,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1831 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 120 case distinctions, treesize of input 317 treesize of output 737 [2022-12-14 04:56:09,328 INFO L321 Elim1Store]: treesize reduction 1330, result has 18.9 percent of original size [2022-12-14 04:56:09,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1771 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 121 case distinctions, treesize of input 6263 treesize of output 6329 [2022-12-14 04:56:12,612 INFO L321 Elim1Store]: treesize reduction 1818, result has 14.9 percent of original size [2022-12-14 04:56:12,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1831 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 183 case distinctions, treesize of input 6266 treesize of output 6339 [2022-12-14 04:56:40,081 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 6 treesize of output 5 [2022-12-14 04:56:40,110 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 [2022-12-14 04:56:42,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2022-12-14 04:56:42,664 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 19 treesize of output 1 [2022-12-14 04:56:42,666 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 19 treesize of output 1 [2022-12-14 04:56:49,945 INFO L321 Elim1Store]: treesize reduction 1080, result has 33.4 percent of original size [2022-12-14 04:56:49,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1831 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 120 case distinctions, treesize of input 317 treesize of output 737 [2022-12-14 04:56:50,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 60 select indices, 60 select index equivalence classes, 1831 disjoint index pairs (out of 1770 index pairs), introduced 60 new quantified variables, introduced 0 case distinctions, treesize of input 307 treesize of output 486 [2022-12-14 04:57:00,360 INFO L321 Elim1Store]: treesize reduction 1330, result has 18.9 percent of original size [2022-12-14 04:57:00,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1771 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 121 case distinctions, treesize of input 6263 treesize of output 6329 [2022-12-14 04:57:03,603 INFO L321 Elim1Store]: treesize reduction 1818, result has 14.9 percent of original size [2022-12-14 04:57:03,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1831 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 183 case distinctions, treesize of input 6266 treesize of output 6339 [2022-12-14 04:57:32,456 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 6 treesize of output 5 [2022-12-14 04:57:32,678 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 [2022-12-14 04:57:33,262 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 6 treesize of output 5 [2022-12-14 04:57:33,437 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 [2022-12-14 04:57:34,748 INFO L197 IcfgInterpreter]: Interpreting procedure pf_probe with input of size 199 for LOIs [2022-12-14 04:57:34,823 INFO L197 IcfgInterpreter]: Interpreting procedure pi_init with input of size 224 for LOIs [2022-12-14 04:57:34,852 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:57:41,287 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 1222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:57:48,821 WARN L233 SmtUtils]: Spent 7.43s on a formula simplification that was a NOOP. DAG size: 1235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:57:56,016 WARN L233 SmtUtils]: Spent 7.06s on a formula simplification that was a NOOP. DAG size: 1237 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:58:02,535 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 1225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:58:08,782 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 1238 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:58:16,103 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification that was a NOOP. DAG size: 1240 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:58:22,407 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 1228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:58:40,661 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 1225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:58:40,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [979897721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:58:40,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:58:40,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-12-14 04:58:40,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366282249] [2022-12-14 04:58:40,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:58:40,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 04:58:40,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:58:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 04:58:40,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-12-14 04:58:40,666 INFO L87 Difference]: Start difference. First operand 1051 states and 1416 transitions. Second operand has 24 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 04:58:57,395 WARN L233 SmtUtils]: Spent 15.63s on a formula simplification. DAG size of input: 1374 DAG size of output: 1259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:59:10,864 WARN L233 SmtUtils]: Spent 13.15s on a formula simplification. DAG size of input: 1256 DAG size of output: 1250 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:59:26,085 WARN L233 SmtUtils]: Spent 15.00s on a formula simplification. DAG size of input: 1259 DAG size of output: 1253 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:59:40,957 WARN L233 SmtUtils]: Spent 13.82s on a formula simplification. DAG size of input: 1242 DAG size of output: 1241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:59:53,703 WARN L233 SmtUtils]: Spent 12.47s on a formula simplification. DAG size of input: 1252 DAG size of output: 1251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:00:06,614 WARN L233 SmtUtils]: Spent 12.70s on a formula simplification. DAG size of input: 1263 DAG size of output: 1262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:00:20,665 WARN L233 SmtUtils]: Spent 13.77s on a formula simplification. DAG size of input: 1297 DAG size of output: 1296 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:00:34,048 WARN L233 SmtUtils]: Spent 13.12s on a formula simplification. DAG size of input: 1260 DAG size of output: 1258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:00:49,335 WARN L233 SmtUtils]: Spent 14.96s on a formula simplification. DAG size of input: 1250 DAG size of output: 1248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:01:03,006 WARN L233 SmtUtils]: Spent 13.27s on a formula simplification. DAG size of input: 1252 DAG size of output: 1250 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:01:15,320 WARN L233 SmtUtils]: Spent 12.02s on a formula simplification. DAG size of input: 1238 DAG size of output: 1237 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:01:27,540 WARN L233 SmtUtils]: Spent 11.93s on a formula simplification. DAG size of input: 1248 DAG size of output: 1247 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)