./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 --- 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 [2022-12-13 12:33:19,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:33:19,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:33:19,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:33:19,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:33:19,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:33:19,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:33:19,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:33:19,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:33:19,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:33:19,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:33:19,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:33:19,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:33:19,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:33:19,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:33:19,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:33:19,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:33:19,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:33:19,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:33:19,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:33:19,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:33:19,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:33:19,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:33:19,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:33:19,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:33:19,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:33:19,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:33:19,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:33:19,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:33:19,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:33:19,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:33:19,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:33:19,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:33:19,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:33:19,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:33:19,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:33:19,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:33:19,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:33:19,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:33:19,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:33:19,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:33:19,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 12:33:19,272 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:33:19,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:33:19,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:33:19,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:33:19,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:33:19,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:33:19,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:33:19,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:33:19,273 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:33:19,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:33:19,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:33:19,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:33:19,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:33:19,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:33:19,276 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:33:19,276 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 [2022-12-13 12:33:19,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:33:19,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:33:19,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:33:19,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:33:19,466 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:33:19,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2022-12-13 12:33:22,005 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:33:22,349 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:33:22,350 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2022-12-13 12:33:22,373 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/data/2f2b191ee/fc828828cb754696b01b19b43351ead9/FLAGc231e9991 [2022-12-13 12:33:22,388 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/data/2f2b191ee/fc828828cb754696b01b19b43351ead9 [2022-12-13 12:33:22,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:33:22,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:33:22,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:33:22,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:33:22,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:33:22,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:33:22" (1/1) ... [2022-12-13 12:33:22,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607e1acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:22, skipping insertion in model container [2022-12-13 12:33:22,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:33:22" (1/1) ... [2022-12-13 12:33:22,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:33:22,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:33:22,867 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-13 12:33:22,871 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-13 12:33:22,934 WARN L623 FunctionHandler]: Unknown extern function __xadd_wrong_size [2022-12-13 12:33:22,962 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-13 12:33:22,971 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-13 12:33:23,041 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 12:33:23,046 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 12:33:23,129 WARN L623 FunctionHandler]: Unknown extern function blk_get_request [2022-12-13 12:33:23,129 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,131 WARN L623 FunctionHandler]: Unknown extern function blk_rq_set_block_pc [2022-12-13 12:33:23,131 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_kern [2022-12-13 12:33:23,131 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-12-13 12:33:23,132 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,148 WARN L623 FunctionHandler]: Unknown extern function list_del [2022-12-13 12:33:23,149 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 12:33:23,153 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 12:33:23,156 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 12:33:23,157 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-13 12:33:23,158 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-13 12:33:23,164 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq [2022-12-13 12:33:23,165 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-12-13 12:33:23,199 WARN L623 FunctionHandler]: Unknown extern function scsi_normalize_sense [2022-12-13 12:33:23,201 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,206 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,207 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq [2022-12-13 12:33:23,207 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-12-13 12:33:23,209 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,210 WARN L623 FunctionHandler]: Unknown extern function list_del [2022-12-13 12:33:23,211 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 12:33:23,229 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,250 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-13 12:33:23,251 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-13 12:33:23,257 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,259 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 12:33:23,265 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 12:33:23,270 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 12:33:23,270 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-12-13 12:33:23,271 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 12:33:23,289 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-13 12:33:23,293 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-12-13 12:33:23,294 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-13 12:33:23,295 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-13 12:33:23,296 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-13 12:33:23,296 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-12-13 12:33:23,297 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-13 12:33:23,297 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-12-13 12:33:23,298 WARN L623 FunctionHandler]: Unknown extern function scsi_register_device_handler [2022-12-13 12:33:23,298 WARN L623 FunctionHandler]: Unknown extern function scsi_unregister_device_handler [2022-12-13 12:33:23,299 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-12-13 12:33:23,299 WARN L623 FunctionHandler]: Unknown extern function scsi_unregister_device_handler [2022-12-13 12:33:23,302 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_300d36b3-b07f-49da-9470-7e0fd73de196/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2022-12-13 12:33:23,317 WARN L623 FunctionHandler]: Unknown extern function ldv_some_page [2022-12-13 12:33:23,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:33:23,350 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:33:23,421 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-13 12:33:23,421 WARN L623 FunctionHandler]: Unknown extern function __list_add [2022-12-13 12:33:23,424 WARN L623 FunctionHandler]: Unknown extern function __xadd_wrong_size [2022-12-13 12:33:23,425 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-12-13 12:33:23,425 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-12-13 12:33:23,427 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 12:33:23,429 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 12:33:23,439 WARN L623 FunctionHandler]: Unknown extern function blk_get_request [2022-12-13 12:33:23,440 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,440 WARN L623 FunctionHandler]: Unknown extern function blk_rq_set_block_pc [2022-12-13 12:33:23,441 WARN L623 FunctionHandler]: Unknown extern function blk_rq_map_kern [2022-12-13 12:33:23,441 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-12-13 12:33:23,441 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,447 WARN L623 FunctionHandler]: Unknown extern function list_del [2022-12-13 12:33:23,448 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 12:33:23,449 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 12:33:23,452 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 12:33:23,452 WARN L623 FunctionHandler]: Unknown extern function __init_work [2022-12-13 12:33:23,453 WARN L623 FunctionHandler]: Unknown extern function lockdep_init_map [2022-12-13 12:33:23,456 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq [2022-12-13 12:33:23,457 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-12-13 12:33:23,463 WARN L623 FunctionHandler]: Unknown extern function scsi_normalize_sense [2022-12-13 12:33:23,465 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,468 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,469 WARN L623 FunctionHandler]: Unknown extern function blk_execute_rq [2022-12-13 12:33:23,470 WARN L623 FunctionHandler]: Unknown extern function blk_put_request [2022-12-13 12:33:23,471 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,472 WARN L623 FunctionHandler]: Unknown extern function list_del [2022-12-13 12:33:23,472 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 12:33:23,477 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,488 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-13 12:33:23,489 WARN L623 FunctionHandler]: Unknown extern function strncmp [2022-12-13 12:33:23,490 WARN L623 FunctionHandler]: Unknown extern function sdev_prefix_printk [2022-12-13 12:33:23,492 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 12:33:23,493 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 12:33:23,494 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 12:33:23,495 WARN L623 FunctionHandler]: Unknown extern function __alloc_workqueue_key [2022-12-13 12:33:23,496 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 12:33:23,501 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-13 12:33:23,503 WARN L623 FunctionHandler]: Unknown extern function ldv_check_final_state [2022-12-13 12:33:23,505 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-13 12:33:23,505 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-13 12:33:23,506 WARN L623 FunctionHandler]: Unknown extern function queue_work_on [2022-12-13 12:33:23,506 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-12-13 12:33:23,507 WARN L623 FunctionHandler]: Unknown extern function queue_delayed_work_on [2022-12-13 12:33:23,507 WARN L623 FunctionHandler]: Unknown extern function flush_workqueue [2022-12-13 12:33:23,507 WARN L623 FunctionHandler]: Unknown extern function scsi_register_device_handler [2022-12-13 12:33:23,508 WARN L623 FunctionHandler]: Unknown extern function scsi_unregister_device_handler [2022-12-13 12:33:23,508 WARN L623 FunctionHandler]: Unknown extern function destroy_workqueue [2022-12-13 12:33:23,509 WARN L623 FunctionHandler]: Unknown extern function scsi_unregister_device_handler [2022-12-13 12:33:23,509 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_300d36b3-b07f-49da-9470-7e0fd73de196/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2022-12-13 12:33:23,511 WARN L623 FunctionHandler]: Unknown extern function ldv_some_page [2022-12-13 12:33:23,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:33:23,545 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:33:23,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23 WrapperNode [2022-12-13 12:33:23,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:33:23,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:33:23,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:33:23,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:33:23,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,645 INFO L138 Inliner]: procedures = 147, calls = 875, calls flagged for inlining = 60, calls inlined = 58, statements flattened = 2044 [2022-12-13 12:33:23,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:33:23,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:33:23,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:33:23,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:33:23,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:33:23,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:33:23,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:33:23,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:33:23,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (1/1) ... [2022-12-13 12:33:23,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:33:23,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:23,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:33:23,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:33:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 12:33:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-12-13 12:33:23,780 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-12-13 12:33:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-12-13 12:33:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-13 12:33:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-13 12:33:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-13 12:33:23,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-13 12:33:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:33:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-12-13 12:33:23,780 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-12-13 12:33:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-13 12:33:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-13 12:33:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 12:33:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 12:33:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_data [2022-12-13 12:33:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_data [2022-12-13 12:33:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure blk_put_request [2022-12-13 12:33:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_put_request [2022-12-13 12:33:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-12-13 12:33:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-12-13 12:33:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-13 12:33:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-13 12:33:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:33:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-13 12:33:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-13 12:33:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure send_mode_select [2022-12-13 12:33:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure send_mode_select [2022-12-13 12:33:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-12-13 12:33:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-12-13 12:33:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-13 12:33:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-13 12:33:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-13 12:33:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-13 12:33:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-12-13 12:33:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-12-13 12:33:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 12:33:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 12:33:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:33:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-12-13 12:33:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-12-13 12:33:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unregister_device_handler [2022-12-13 12:33:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unregister_device_handler [2022-12-13 12:33:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-12-13 12:33:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-12-13 12:33:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-12-13 12:33:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-12-13 12:33:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:33:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure submit_inquiry [2022-12-13 12:33:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_inquiry [2022-12-13 12:33:23,784 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_detach [2022-12-13 12:33:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_detach [2022-12-13 12:33:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:33:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 12:33:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_match [2022-12-13 12:33:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_match [2022-12-13 12:33:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-12-13 12:33:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-12-13 12:33:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-13 12:33:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2022-12-13 12:33:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2022-12-13 12:33:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-13 12:33:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-13 12:33:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 12:33:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-12-13 12:33:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-12-13 12:33:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-12-13 12:33:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-12-13 12:33:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-12-13 12:33:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure check_ownership [2022-12-13 12:33:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ownership [2022-12-13 12:33:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-12-13 12:33:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-12-13 12:33:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:33:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 12:33:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_req [2022-12-13 12:33:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_req [2022-12-13 12:33:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-12-13 12:33:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-12-13 12:33:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-12-13 12:33:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-12-13 12:33:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-12-13 12:33:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-12-13 12:33:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-12-13 12:33:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-12-13 12:33:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-12-13 12:33:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-12-13 12:33:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-12-13 12:33:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-12-13 12:33:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:33:23,788 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-12-13 12:33:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-12-13 12:33:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-13 12:33:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:33:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:33:23,789 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-12-13 12:33:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-12-13 12:33:24,074 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:33:24,075 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:33:24,275 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-13 12:33:25,318 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:33:25,326 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:33:25,326 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:33:25,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:33:25 BoogieIcfgContainer [2022-12-13 12:33:25,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:33:25,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:33:25,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:33:25,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:33:25,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:33:22" (1/3) ... [2022-12-13 12:33:25,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7758af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:33:25, skipping insertion in model container [2022-12-13 12:33:25,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:23" (2/3) ... [2022-12-13 12:33:25,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7758af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:33:25, skipping insertion in model container [2022-12-13 12:33:25,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:33:25" (3/3) ... [2022-12-13 12:33:25,334 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2022-12-13 12:33:25,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:33:25,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:33:25,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:33:25,417 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=PETRI_NET, 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;@3a90b85b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:33:25,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:33:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 589 states, 434 states have (on average 1.3940092165898617) internal successors, (605), 454 states have internal predecessors, (605), 115 states have call successors, (115), 39 states have call predecessors, (115), 38 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-12-13 12:33:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 12:33:25,430 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:25,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:25,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:25,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:25,435 INFO L85 PathProgramCache]: Analyzing trace with hash -896153365, now seen corresponding path program 1 times [2022-12-13 12:33:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:25,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404547905] [2022-12-13 12:33:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 12:33:25,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:25,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404547905] [2022-12-13 12:33:25,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404547905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:25,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:25,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:33:25,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898864805] [2022-12-13 12:33:25,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:25,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:33:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:25,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:33:25,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:33:25,881 INFO L87 Difference]: Start difference. First operand has 589 states, 434 states have (on average 1.3940092165898617) internal successors, (605), 454 states have internal predecessors, (605), 115 states have call successors, (115), 39 states have call predecessors, (115), 38 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 12:33:27,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:27,421 INFO L93 Difference]: Finished difference Result 1529 states and 2237 transitions. [2022-12-13 12:33:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:33:27,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2022-12-13 12:33:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:27,443 INFO L225 Difference]: With dead ends: 1529 [2022-12-13 12:33:27,443 INFO L226 Difference]: Without dead ends: 876 [2022-12-13 12:33:27,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:33:27,455 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 1083 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:27,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1769 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 12:33:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-12-13 12:33:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 776. [2022-12-13 12:33:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 580 states have (on average 1.3706896551724137) internal successors, (795), 596 states have internal predecessors, (795), 139 states have call successors, (139), 57 states have call predecessors, (139), 56 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2022-12-13 12:33:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1072 transitions. [2022-12-13 12:33:27,573 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1072 transitions. Word has length 73 [2022-12-13 12:33:27,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:27,574 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1072 transitions. [2022-12-13 12:33:27,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 12:33:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1072 transitions. [2022-12-13 12:33:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 12:33:27,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:27,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:27,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:33:27,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:27,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:27,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1989587294, now seen corresponding path program 1 times [2022-12-13 12:33:27,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:27,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776853755] [2022-12-13 12:33:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:27,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 12:33:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:27,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776853755] [2022-12-13 12:33:27,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776853755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:27,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:27,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:33:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441863879] [2022-12-13 12:33:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:27,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:33:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:27,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:33:27,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:33:27,939 INFO L87 Difference]: Start difference. First operand 776 states and 1072 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 12:33:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:30,211 INFO L93 Difference]: Finished difference Result 2203 states and 3226 transitions. [2022-12-13 12:33:30,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:33:30,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 106 [2022-12-13 12:33:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:30,218 INFO L225 Difference]: With dead ends: 2203 [2022-12-13 12:33:30,218 INFO L226 Difference]: Without dead ends: 1450 [2022-12-13 12:33:30,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:33:30,221 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 1438 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:30,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 5433 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 12:33:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2022-12-13 12:33:30,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 779. [2022-12-13 12:33:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 583 states have (on average 1.3687821612349915) internal successors, (798), 599 states have internal predecessors, (798), 139 states have call successors, (139), 57 states have call predecessors, (139), 56 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2022-12-13 12:33:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1075 transitions. [2022-12-13 12:33:30,258 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1075 transitions. Word has length 106 [2022-12-13 12:33:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:30,258 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1075 transitions. [2022-12-13 12:33:30,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 12:33:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1075 transitions. [2022-12-13 12:33:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 12:33:30,260 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:30,260 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:30,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:33:30,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash 61314649, now seen corresponding path program 1 times [2022-12-13 12:33:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:30,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542665183] [2022-12-13 12:33:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:30,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-13 12:33:30,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:30,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542665183] [2022-12-13 12:33:30,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542665183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:30,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:30,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:33:30,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363681625] [2022-12-13 12:33:30,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:30,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:33:30,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:30,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:33:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:33:30,451 INFO L87 Difference]: Start difference. First operand 779 states and 1075 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 12:33:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:31,618 INFO L93 Difference]: Finished difference Result 984 states and 1369 transitions. [2022-12-13 12:33:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:33:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 107 [2022-12-13 12:33:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:31,623 INFO L225 Difference]: With dead ends: 984 [2022-12-13 12:33:31,623 INFO L226 Difference]: Without dead ends: 981 [2022-12-13 12:33:31,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:33:31,624 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1097 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:31,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1627 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 12:33:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-12-13 12:33:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 867. [2022-12-13 12:33:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 636 states have (on average 1.3632075471698113) internal successors, (867), 664 states have internal predecessors, (867), 159 states have call successors, (159), 72 states have call predecessors, (159), 71 states have return successors, (171), 152 states have call predecessors, (171), 158 states have call successors, (171) [2022-12-13 12:33:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1197 transitions. [2022-12-13 12:33:31,654 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1197 transitions. Word has length 107 [2022-12-13 12:33:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:31,655 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1197 transitions. [2022-12-13 12:33:31,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 12:33:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1197 transitions. [2022-12-13 12:33:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-13 12:33:31,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:31,659 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:31,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:33:31,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:31,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1667113681, now seen corresponding path program 1 times [2022-12-13 12:33:31,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:31,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801966971] [2022-12-13 12:33:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:31,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 12:33:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-12-13 12:33:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-12-13 12:33:32,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801966971] [2022-12-13 12:33:32,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801966971] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:32,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696132920] [2022-12-13 12:33:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:32,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:32,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:32,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:32,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:33:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:32,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:33:32,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 12:33:32,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:32,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696132920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:32,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:33:32,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-12-13 12:33:32,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373839607] [2022-12-13 12:33:32,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:33:32,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:32,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:33:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:33:32,720 INFO L87 Difference]: Start difference. First operand 867 states and 1197 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 12:33:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:32,820 INFO L93 Difference]: Finished difference Result 1990 states and 2810 transitions. [2022-12-13 12:33:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:33:32,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 196 [2022-12-13 12:33:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:32,827 INFO L225 Difference]: With dead ends: 1990 [2022-12-13 12:33:32,827 INFO L226 Difference]: Without dead ends: 1146 [2022-12-13 12:33:32,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:33:32,831 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 275 mSDsluCounter, 3976 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 5034 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:32,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 5034 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:33:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-12-13 12:33:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 872. [2022-12-13 12:33:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 640 states have (on average 1.3609375) internal successors, (871), 667 states have internal predecessors, (871), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-12-13 12:33:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1205 transitions. [2022-12-13 12:33:32,871 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1205 transitions. Word has length 196 [2022-12-13 12:33:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:32,872 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1205 transitions. [2022-12-13 12:33:32,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 12:33:32,872 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1205 transitions. [2022-12-13 12:33:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-13 12:33:32,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:32,875 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:32,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:33:33,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 12:33:33,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:33,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:33,077 INFO L85 PathProgramCache]: Analyzing trace with hash 300370094, now seen corresponding path program 1 times [2022-12-13 12:33:33,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:33,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130282112] [2022-12-13 12:33:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:33,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 12:33:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-12-13 12:33:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-12-13 12:33:33,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:33,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130282112] [2022-12-13 12:33:33,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130282112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:33,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:33,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 12:33:33,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621007383] [2022-12-13 12:33:33,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:33,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:33:33,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:33:33,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:33:33,519 INFO L87 Difference]: Start difference. First operand 872 states and 1205 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 12:33:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:36,270 INFO L93 Difference]: Finished difference Result 2819 states and 4140 transitions. [2022-12-13 12:33:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:33:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 196 [2022-12-13 12:33:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:36,281 INFO L225 Difference]: With dead ends: 2819 [2022-12-13 12:33:36,281 INFO L226 Difference]: Without dead ends: 1970 [2022-12-13 12:33:36,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:33:36,283 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 2497 mSDsluCounter, 5080 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 6034 SdHoareTripleChecker+Invalid, 3593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:36,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2562 Valid, 6034 Invalid, 3593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 12:33:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-12-13 12:33:36,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 875. [2022-12-13 12:33:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 643 states have (on average 1.359253499222395) internal successors, (874), 670 states have internal predecessors, (874), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-12-13 12:33:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1208 transitions. [2022-12-13 12:33:36,324 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1208 transitions. Word has length 196 [2022-12-13 12:33:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:36,324 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1208 transitions. [2022-12-13 12:33:36,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 12:33:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1208 transitions. [2022-12-13 12:33:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-12-13 12:33:36,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:36,329 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:36,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:33:36,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 733624767, now seen corresponding path program 1 times [2022-12-13 12:33:36,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:36,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120017672] [2022-12-13 12:33:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 12:33:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-12-13 12:33:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-12-13 12:33:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-12-13 12:33:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 12:33:36,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:36,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120017672] [2022-12-13 12:33:36,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120017672] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:36,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285266445] [2022-12-13 12:33:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:36,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:36,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:36,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:36,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:33:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:37,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:33:37,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-13 12:33:37,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:37,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285266445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:37,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:33:37,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-13 12:33:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607837125] [2022-12-13 12:33:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:37,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:33:37,423 INFO L87 Difference]: Start difference. First operand 875 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:33:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:37,477 INFO L93 Difference]: Finished difference Result 1728 states and 2391 transitions. [2022-12-13 12:33:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:37,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 233 [2022-12-13 12:33:37,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:37,481 INFO L225 Difference]: With dead ends: 1728 [2022-12-13 12:33:37,481 INFO L226 Difference]: Without dead ends: 876 [2022-12-13 12:33:37,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:33:37,484 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 0 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:37,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:33:37,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-12-13 12:33:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-12-13 12:33:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 644 states have (on average 1.358695652173913) internal successors, (875), 671 states have internal predecessors, (875), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-12-13 12:33:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1209 transitions. [2022-12-13 12:33:37,517 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1209 transitions. Word has length 233 [2022-12-13 12:33:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:37,517 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1209 transitions. [2022-12-13 12:33:37,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:33:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1209 transitions. [2022-12-13 12:33:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-12-13 12:33:37,522 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:37,522 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:37,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:33:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:37,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:37,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash -952555071, now seen corresponding path program 1 times [2022-12-13 12:33:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:37,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682634250] [2022-12-13 12:33:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:37,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 12:33:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-12-13 12:33:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-12-13 12:33:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-12-13 12:33:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 12:33:38,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:38,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682634250] [2022-12-13 12:33:38,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682634250] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:38,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890876647] [2022-12-13 12:33:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:38,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:38,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:38,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:38,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:33:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:38,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:33:38,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-13 12:33:38,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:38,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890876647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:38,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:33:38,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-13 12:33:38,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972337215] [2022-12-13 12:33:38,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:38,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:38,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:38,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:38,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:33:38,781 INFO L87 Difference]: Start difference. First operand 876 states and 1209 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:33:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:38,847 INFO L93 Difference]: Finished difference Result 1731 states and 2394 transitions. [2022-12-13 12:33:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 233 [2022-12-13 12:33:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:38,853 INFO L225 Difference]: With dead ends: 1731 [2022-12-13 12:33:38,853 INFO L226 Difference]: Without dead ends: 878 [2022-12-13 12:33:38,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:33:38,856 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:38,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1599 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:33:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-12-13 12:33:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 877. [2022-12-13 12:33:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 645 states have (on average 1.3581395348837209) internal successors, (876), 672 states have internal predecessors, (876), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-12-13 12:33:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1210 transitions. [2022-12-13 12:33:38,896 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1210 transitions. Word has length 233 [2022-12-13 12:33:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:38,896 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1210 transitions. [2022-12-13 12:33:38,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:33:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1210 transitions. [2022-12-13 12:33:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-13 12:33:38,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:38,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:38,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:33:39,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:39,102 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:39,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1731104667, now seen corresponding path program 1 times [2022-12-13 12:33:39,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:39,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709099210] [2022-12-13 12:33:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:39,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 12:33:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 12:33:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 12:33:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-12-13 12:33:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-12-13 12:33:39,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709099210] [2022-12-13 12:33:39,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709099210] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:39,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27267519] [2022-12-13 12:33:39,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:39,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:39,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:39,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:39,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:33:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:33:40,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 12:33:40,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:40,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27267519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:40,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:33:40,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-12-13 12:33:40,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202445616] [2022-12-13 12:33:40,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:40,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:33:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:33:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:33:40,217 INFO L87 Difference]: Start difference. First operand 877 states and 1210 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:33:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:40,275 INFO L93 Difference]: Finished difference Result 1734 states and 2397 transitions. [2022-12-13 12:33:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:33:40,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 235 [2022-12-13 12:33:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:40,279 INFO L225 Difference]: With dead ends: 1734 [2022-12-13 12:33:40,279 INFO L226 Difference]: Without dead ends: 880 [2022-12-13 12:33:40,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:33:40,281 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 3 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:40,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2393 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:33:40,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-12-13 12:33:40,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 879. [2022-12-13 12:33:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 647 states have (on average 1.357032457496136) internal successors, (878), 674 states have internal predecessors, (878), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-12-13 12:33:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1212 transitions. [2022-12-13 12:33:40,312 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1212 transitions. Word has length 235 [2022-12-13 12:33:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:40,312 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1212 transitions. [2022-12-13 12:33:40,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:33:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1212 transitions. [2022-12-13 12:33:40,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-13 12:33:40,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:40,316 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:40,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:33:40,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:40,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:40,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:40,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2071236455, now seen corresponding path program 1 times [2022-12-13 12:33:40,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:40,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558949318] [2022-12-13 12:33:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:40,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 12:33:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 12:33:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 12:33:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-12-13 12:33:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-12-13 12:33:41,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:41,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558949318] [2022-12-13 12:33:41,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558949318] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:41,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875136119] [2022-12-13 12:33:41,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:41,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:41,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:41,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:41,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:33:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:41,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:33:41,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 12:33:41,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:41,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875136119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:41,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:33:41,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-12-13 12:33:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840334053] [2022-12-13 12:33:41,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:41,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:33:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:33:41,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:33:41,549 INFO L87 Difference]: Start difference. First operand 879 states and 1212 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:33:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:41,609 INFO L93 Difference]: Finished difference Result 1741 states and 2404 transitions. [2022-12-13 12:33:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:33:41,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 235 [2022-12-13 12:33:41,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:41,612 INFO L225 Difference]: With dead ends: 1741 [2022-12-13 12:33:41,613 INFO L226 Difference]: Without dead ends: 885 [2022-12-13 12:33:41,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:33:41,615 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 9 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:41,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2391 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:33:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-12-13 12:33:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 881. [2022-12-13 12:33:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 649 states have (on average 1.3559322033898304) internal successors, (880), 676 states have internal predecessors, (880), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-12-13 12:33:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1214 transitions. [2022-12-13 12:33:41,652 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1214 transitions. Word has length 235 [2022-12-13 12:33:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:41,652 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1214 transitions. [2022-12-13 12:33:41,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:33:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1214 transitions. [2022-12-13 12:33:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-13 12:33:41,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:41,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:41,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:33:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:41,857 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1103885801, now seen corresponding path program 1 times [2022-12-13 12:33:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:41,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363108410] [2022-12-13 12:33:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 12:33:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 12:33:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 12:33:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-12-13 12:33:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-12-13 12:33:42,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:42,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363108410] [2022-12-13 12:33:42,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363108410] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:42,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315039152] [2022-12-13 12:33:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:42,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:42,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:42,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:42,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:33:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:42,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:33:42,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 12:33:42,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:42,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315039152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:42,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:33:42,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-12-13 12:33:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100344308] [2022-12-13 12:33:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:33:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:33:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:33:42,911 INFO L87 Difference]: Start difference. First operand 881 states and 1214 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 12:33:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:42,996 INFO L93 Difference]: Finished difference Result 1945 states and 2729 transitions. [2022-12-13 12:33:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:33:42,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 235 [2022-12-13 12:33:42,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:43,000 INFO L225 Difference]: With dead ends: 1945 [2022-12-13 12:33:43,000 INFO L226 Difference]: Without dead ends: 1087 [2022-12-13 12:33:43,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:33:43,003 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 200 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:43,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 4964 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:33:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-12-13 12:33:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 882. [2022-12-13 12:33:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 649 states have (on average 1.3559322033898304) internal successors, (880), 677 states have internal predecessors, (880), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 154 states have call predecessors, (176), 159 states have call successors, (176) [2022-12-13 12:33:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1216 transitions. [2022-12-13 12:33:43,032 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1216 transitions. Word has length 235 [2022-12-13 12:33:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:43,032 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1216 transitions. [2022-12-13 12:33:43,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 12:33:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1216 transitions. [2022-12-13 12:33:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-13 12:33:43,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:43,036 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:43,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:33:43,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 12:33:43,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:43,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:43,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1624323545, now seen corresponding path program 1 times [2022-12-13 12:33:43,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:43,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308995123] [2022-12-13 12:33:43,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:43,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 12:33:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 12:33:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 12:33:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-12-13 12:33:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 12:33:43,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308995123] [2022-12-13 12:33:43,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308995123] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:43,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285607413] [2022-12-13 12:33:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:43,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:43,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:43,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:43,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:33:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:44,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:33:44,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-13 12:33:44,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 12:33:44,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285607413] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:44,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:33:44,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 13 [2022-12-13 12:33:44,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476328952] [2022-12-13 12:33:44,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:44,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:33:44,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:33:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:33:44,329 INFO L87 Difference]: Start difference. First operand 882 states and 1216 transitions. Second operand has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-13 12:33:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:45,732 INFO L93 Difference]: Finished difference Result 1880 states and 2618 transitions. [2022-12-13 12:33:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:33:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 235 [2022-12-13 12:33:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:45,736 INFO L225 Difference]: With dead ends: 1880 [2022-12-13 12:33:45,736 INFO L226 Difference]: Without dead ends: 1021 [2022-12-13 12:33:45,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:33:45,738 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 841 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:45,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2333 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 12:33:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-12-13 12:33:45,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 888. [2022-12-13 12:33:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 655 states have (on average 1.3526717557251908) internal successors, (886), 683 states have internal predecessors, (886), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 154 states have call predecessors, (176), 159 states have call successors, (176) [2022-12-13 12:33:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1222 transitions. [2022-12-13 12:33:45,771 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1222 transitions. Word has length 235 [2022-12-13 12:33:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:45,771 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1222 transitions. [2022-12-13 12:33:45,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-13 12:33:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1222 transitions. [2022-12-13 12:33:45,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-13 12:33:45,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:45,774 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:45,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:33:45,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:45,976 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash -747098477, now seen corresponding path program 2 times [2022-12-13 12:33:45,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:45,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217883110] [2022-12-13 12:33:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:45,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 12:33:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 12:33:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 12:33:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-12-13 12:33:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 12:33:46,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:46,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217883110] [2022-12-13 12:33:46,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217883110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:46,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:46,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 12:33:46,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61769018] [2022-12-13 12:33:46,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:46,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:33:46,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:33:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:33:46,470 INFO L87 Difference]: Start difference. First operand 888 states and 1222 transitions. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 12:33:48,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:48,525 INFO L93 Difference]: Finished difference Result 2146 states and 3051 transitions. [2022-12-13 12:33:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:33:48,526 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 241 [2022-12-13 12:33:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:48,532 INFO L225 Difference]: With dead ends: 2146 [2022-12-13 12:33:48,532 INFO L226 Difference]: Without dead ends: 1281 [2022-12-13 12:33:48,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:33:48,534 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1244 mSDsluCounter, 4730 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:48,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 5630 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 12:33:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-12-13 12:33:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 893. [2022-12-13 12:33:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 659 states have (on average 1.3505311077389985) internal successors, (890), 686 states have internal predecessors, (890), 160 states have call successors, (160), 72 states have call predecessors, (160), 73 states have return successors, (180), 155 states have call predecessors, (180), 159 states have call successors, (180) [2022-12-13 12:33:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1230 transitions. [2022-12-13 12:33:48,571 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1230 transitions. Word has length 241 [2022-12-13 12:33:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:48,571 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1230 transitions. [2022-12-13 12:33:48,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 12:33:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1230 transitions. [2022-12-13 12:33:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-12-13 12:33:48,574 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:48,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:48,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:33:48,575 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2109961262, now seen corresponding path program 1 times [2022-12-13 12:33:48,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:48,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462777924] [2022-12-13 12:33:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:48,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 12:33:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 12:33:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 12:33:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-12-13 12:33:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-12-13 12:33:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462777924] [2022-12-13 12:33:49,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462777924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:49,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:49,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 12:33:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476864798] [2022-12-13 12:33:49,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:33:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:33:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:33:49,113 INFO L87 Difference]: Start difference. First operand 893 states and 1230 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 12:33:51,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:51,430 INFO L93 Difference]: Finished difference Result 2152 states and 3059 transitions. [2022-12-13 12:33:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:33:51,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 257 [2022-12-13 12:33:51,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:51,435 INFO L225 Difference]: With dead ends: 2152 [2022-12-13 12:33:51,435 INFO L226 Difference]: Without dead ends: 1282 [2022-12-13 12:33:51,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:33:51,437 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 1037 mSDsluCounter, 5407 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 3121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:51,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 6336 Invalid, 3121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 12:33:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-12-13 12:33:51,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 890. [2022-12-13 12:33:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 657 states have (on average 1.3515981735159817) internal successors, (888), 684 states have internal predecessors, (888), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 155 states have call predecessors, (176), 159 states have call successors, (176) [2022-12-13 12:33:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1224 transitions. [2022-12-13 12:33:51,474 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1224 transitions. Word has length 257 [2022-12-13 12:33:51,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:51,475 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1224 transitions. [2022-12-13 12:33:51,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 12:33:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1224 transitions. [2022-12-13 12:33:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-12-13 12:33:51,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:51,478 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:51,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:33:51,478 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:51,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2044457424, now seen corresponding path program 1 times [2022-12-13 12:33:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:51,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329815919] [2022-12-13 12:33:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:51,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 12:33:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 12:33:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 12:33:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-12-13 12:33:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-12-13 12:33:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329815919] [2022-12-13 12:33:51,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329815919] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:51,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892324658] [2022-12-13 12:33:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:51,950 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:51,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:33:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:52,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:33:52,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 62 proven. 16 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:33:52,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-12-13 12:33:52,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892324658] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:52,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:33:52,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 19 [2022-12-13 12:33:52,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680675384] [2022-12-13 12:33:52,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:52,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:33:52,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:52,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:33:52,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:33:52,688 INFO L87 Difference]: Start difference. First operand 890 states and 1224 transitions. Second operand has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 13 states have internal predecessors, (180), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 12:33:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:54,579 INFO L93 Difference]: Finished difference Result 1902 states and 2643 transitions. [2022-12-13 12:33:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:33:54,579 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 13 states have internal predecessors, (180), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 257 [2022-12-13 12:33:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:54,585 INFO L225 Difference]: With dead ends: 1902 [2022-12-13 12:33:54,585 INFO L226 Difference]: Without dead ends: 1035 [2022-12-13 12:33:54,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-12-13 12:33:54,587 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 687 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:54,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 3190 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 12:33:54,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-12-13 12:33:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 902. [2022-12-13 12:33:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 669 states have (on average 1.345291479820628) internal successors, (900), 696 states have internal predecessors, (900), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 155 states have call predecessors, (176), 159 states have call successors, (176) [2022-12-13 12:33:54,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1236 transitions. [2022-12-13 12:33:54,622 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1236 transitions. Word has length 257 [2022-12-13 12:33:54,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:54,622 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1236 transitions. [2022-12-13 12:33:54,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 13 states have internal predecessors, (180), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 12:33:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1236 transitions. [2022-12-13 12:33:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-12-13 12:33:54,625 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:54,625 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:54,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 12:33:54,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 12:33:54,829 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:54,830 INFO L85 PathProgramCache]: Analyzing trace with hash 439804936, now seen corresponding path program 2 times [2022-12-13 12:33:54,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:54,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701064431] [2022-12-13 12:33:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:54,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:33:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:33:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:33:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:33:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:33:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:33:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:33:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:33:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:33:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:33:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-12-13 12:33:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:33:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:33:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:33:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:33:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:33:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:33:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-12-13 12:33:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-12-13 12:33:55,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:55,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701064431] [2022-12-13 12:33:55,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701064431] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:33:55,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208457179] [2022-12-13 12:33:55,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:33:55,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:55,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:55,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:33:55,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:33:56,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:33:56,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:33:56,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 3235 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:33:56,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 62 proven. 100 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:33:56,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-12-13 12:33:56,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208457179] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:56,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:33:56,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 31 [2022-12-13 12:33:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234473761] [2022-12-13 12:33:56,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:56,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 12:33:56,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 12:33:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2022-12-13 12:33:56,446 INFO L87 Difference]: Start difference. First operand 902 states and 1236 transitions. Second operand has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 12:33:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:33:59,021 INFO L93 Difference]: Finished difference Result 1938 states and 2685 transitions. [2022-12-13 12:33:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 12:33:59,022 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 269 [2022-12-13 12:33:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:33:59,025 INFO L225 Difference]: With dead ends: 1938 [2022-12-13 12:33:59,025 INFO L226 Difference]: Without dead ends: 1059 [2022-12-13 12:33:59,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 12:33:59,027 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 841 mSDsluCounter, 4967 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:33:59,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 5582 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 2749 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 12:33:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-12-13 12:33:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 926. [2022-12-13 12:33:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 693 states have (on average 1.3333333333333333) internal successors, (924), 720 states have internal predecessors, (924), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 155 states have call predecessors, (176), 159 states have call successors, (176) [2022-12-13 12:33:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1260 transitions. [2022-12-13 12:33:59,062 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1260 transitions. Word has length 269 [2022-12-13 12:33:59,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:33:59,062 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1260 transitions. [2022-12-13 12:33:59,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 12:33:59,063 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1260 transitions. [2022-12-13 12:33:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-12-13 12:33:59,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:33:59,065 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:59,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 12:33:59,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:33:59,266 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:33:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash 488932280, now seen corresponding path program 3 times [2022-12-13 12:33:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:59,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309203776] [2022-12-13 12:33:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:59,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:34:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:34:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:34:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:34:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:34:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:34:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:34:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-12-13 12:34:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:34:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:34:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:34:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:34:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-12-13 12:34:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-12-13 12:34:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:00,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309203776] [2022-12-13 12:34:00,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309203776] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:00,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882362905] [2022-12-13 12:34:00,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:34:00,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:00,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:00,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:00,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 12:34:01,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:34:01,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:01,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 12:34:01,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-12-13 12:34:01,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:01,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882362905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:01,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:34:01,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [31] total 34 [2022-12-13 12:34:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916466213] [2022-12-13 12:34:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:01,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:34:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:34:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 12:34:01,189 INFO L87 Difference]: Start difference. First operand 926 states and 1260 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:34:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:01,366 INFO L93 Difference]: Finished difference Result 1838 states and 2517 transitions. [2022-12-13 12:34:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:34:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 293 [2022-12-13 12:34:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:01,370 INFO L225 Difference]: With dead ends: 1838 [2022-12-13 12:34:01,370 INFO L226 Difference]: Without dead ends: 935 [2022-12-13 12:34:01,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 12:34:01,373 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 3 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:01,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3194 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:34:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2022-12-13 12:34:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 930. [2022-12-13 12:34:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 696 states have (on average 1.331896551724138) internal successors, (927), 723 states have internal predecessors, (927), 160 states have call successors, (160), 72 states have call predecessors, (160), 73 states have return successors, (178), 156 states have call predecessors, (178), 159 states have call successors, (178) [2022-12-13 12:34:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1265 transitions. [2022-12-13 12:34:01,407 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1265 transitions. Word has length 293 [2022-12-13 12:34:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:01,408 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1265 transitions. [2022-12-13 12:34:01,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 12:34:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1265 transitions. [2022-12-13 12:34:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-12-13 12:34:01,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:01,411 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:01,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 12:34:01,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 12:34:01,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash -743488298, now seen corresponding path program 1 times [2022-12-13 12:34:01,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:01,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178923566] [2022-12-13 12:34:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:34:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:34:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:34:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:34:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-12-13 12:34:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-12-13 12:34:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-12-13 12:34:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:34:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-12-13 12:34:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 12:34:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:02,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178923566] [2022-12-13 12:34:02,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178923566] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:02,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863221556] [2022-12-13 12:34:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:02,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:02,977 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:02,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 12:34:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:03,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 3503 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 12:34:03,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 65 proven. 484 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:34:03,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 12:34:04,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863221556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:34:04,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:34:04,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 25] total 39 [2022-12-13 12:34:04,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104757672] [2022-12-13 12:34:04,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:34:04,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 12:34:04,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 12:34:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 12:34:04,281 INFO L87 Difference]: Start difference. First operand 930 states and 1265 transitions. Second operand has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 33 states have internal predecessors, (228), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 12:34:06,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:06,478 INFO L93 Difference]: Finished difference Result 1982 states and 2724 transitions. [2022-12-13 12:34:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 12:34:06,479 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 33 states have internal predecessors, (228), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 299 [2022-12-13 12:34:06,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:06,482 INFO L225 Difference]: With dead ends: 1982 [2022-12-13 12:34:06,482 INFO L226 Difference]: Without dead ends: 1075 [2022-12-13 12:34:06,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 639 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=566, Invalid=1156, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 12:34:06,484 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 683 mSDsluCounter, 3872 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 4487 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:06,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 4487 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 12:34:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-12-13 12:34:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 946. [2022-12-13 12:34:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 712 states have (on average 1.324438202247191) internal successors, (943), 739 states have internal predecessors, (943), 160 states have call successors, (160), 72 states have call predecessors, (160), 73 states have return successors, (178), 156 states have call predecessors, (178), 159 states have call successors, (178) [2022-12-13 12:34:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1281 transitions. [2022-12-13 12:34:06,540 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1281 transitions. Word has length 299 [2022-12-13 12:34:06,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:06,541 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1281 transitions. [2022-12-13 12:34:06,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 33 states have internal predecessors, (228), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 12:34:06,541 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1281 transitions. [2022-12-13 12:34:06,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-12-13 12:34:06,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:06,546 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:06,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 12:34:06,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 12:34:06,748 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash -314383434, now seen corresponding path program 2 times [2022-12-13 12:34:06,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:06,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326397854] [2022-12-13 12:34:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:06,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:34:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:34:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:34:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:34:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-12-13 12:34:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-12-13 12:34:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-12-13 12:34:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:34:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-12-13 12:34:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2022-12-13 12:34:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:08,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326397854] [2022-12-13 12:34:08,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326397854] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:08,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210981631] [2022-12-13 12:34:08,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:34:08,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:08,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:08,086 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:08,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 12:34:09,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:34:09,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:09,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 3623 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:34:09,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2022-12-13 12:34:09,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:09,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210981631] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:09,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:34:09,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-12-13 12:34:09,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012785845] [2022-12-13 12:34:09,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:09,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:34:09,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:09,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:34:09,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:34:09,222 INFO L87 Difference]: Start difference. First operand 946 states and 1281 transitions. Second operand has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-12-13 12:34:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:09,580 INFO L93 Difference]: Finished difference Result 1890 states and 2571 transitions. [2022-12-13 12:34:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:34:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 315 [2022-12-13 12:34:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:09,586 INFO L225 Difference]: With dead ends: 1890 [2022-12-13 12:34:09,586 INFO L226 Difference]: Without dead ends: 952 [2022-12-13 12:34:09,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:34:09,588 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 26 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:09,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3944 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:34:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-12-13 12:34:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 949. [2022-12-13 12:34:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 714 states have (on average 1.3235294117647058) internal successors, (945), 742 states have internal predecessors, (945), 160 states have call successors, (160), 72 states have call predecessors, (160), 74 states have return successors, (179), 156 states have call predecessors, (179), 159 states have call successors, (179) [2022-12-13 12:34:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1284 transitions. [2022-12-13 12:34:09,625 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1284 transitions. Word has length 315 [2022-12-13 12:34:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:09,626 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1284 transitions. [2022-12-13 12:34:09,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-12-13 12:34:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1284 transitions. [2022-12-13 12:34:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-12-13 12:34:09,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:09,629 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:09,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 12:34:09,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 12:34:09,831 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:09,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1523289346, now seen corresponding path program 1 times [2022-12-13 12:34:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:09,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404023618] [2022-12-13 12:34:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:34:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:34:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:34:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:34:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:34:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 12:34:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-12-13 12:34:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-12-13 12:34:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-12-13 12:34:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:34:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:34:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:11,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 12:34:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-12-13 12:34:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2022-12-13 12:34:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:11,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404023618] [2022-12-13 12:34:11,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404023618] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:11,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179750022] [2022-12-13 12:34:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:11,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:11,034 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:11,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 12:34:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:12,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 3701 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 12:34:12,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2022-12-13 12:34:12,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:12,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179750022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:12,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:34:12,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 13 [2022-12-13 12:34:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960359421] [2022-12-13 12:34:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:12,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:34:12,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:34:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:34:12,445 INFO L87 Difference]: Start difference. First operand 949 states and 1284 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 12:34:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:12,541 INFO L93 Difference]: Finished difference Result 2080 states and 2863 transitions. [2022-12-13 12:34:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:34:12,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 319 [2022-12-13 12:34:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:12,545 INFO L225 Difference]: With dead ends: 2080 [2022-12-13 12:34:12,545 INFO L226 Difference]: Without dead ends: 1154 [2022-12-13 12:34:12,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:34:12,548 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 187 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:12,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 5597 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:34:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-12-13 12:34:12,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 956. [2022-12-13 12:34:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 719 states have (on average 1.321279554937413) internal successors, (950), 747 states have internal predecessors, (950), 160 states have call successors, (160), 72 states have call predecessors, (160), 76 states have return successors, (183), 158 states have call predecessors, (183), 159 states have call successors, (183) [2022-12-13 12:34:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1293 transitions. [2022-12-13 12:34:12,587 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1293 transitions. Word has length 319 [2022-12-13 12:34:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:12,587 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1293 transitions. [2022-12-13 12:34:12,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 12:34:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1293 transitions. [2022-12-13 12:34:12,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-12-13 12:34:12,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:12,591 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:12,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 12:34:12,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:12,792 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash -302173952, now seen corresponding path program 1 times [2022-12-13 12:34:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:12,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961811233] [2022-12-13 12:34:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:12,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:34:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:34:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:34:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:34:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:34:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 12:34:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-12-13 12:34:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-12-13 12:34:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-12-13 12:34:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:34:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:34:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:34:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 12:34:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-12-13 12:34:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2022-12-13 12:34:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961811233] [2022-12-13 12:34:14,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961811233] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833531758] [2022-12-13 12:34:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:14,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:14,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:14,277 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:14,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 12:34:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:15,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 3768 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 12:34:15,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2022-12-13 12:34:15,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:15,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833531758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:15,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:34:15,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 15 [2022-12-13 12:34:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646246310] [2022-12-13 12:34:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:15,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:34:15,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:34:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:34:15,343 INFO L87 Difference]: Start difference. First operand 956 states and 1293 transitions. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 12:34:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:15,512 INFO L93 Difference]: Finished difference Result 1933 states and 2629 transitions. [2022-12-13 12:34:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:34:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 339 [2022-12-13 12:34:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:15,516 INFO L225 Difference]: With dead ends: 1933 [2022-12-13 12:34:15,516 INFO L226 Difference]: Without dead ends: 1000 [2022-12-13 12:34:15,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:34:15,518 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 22 mSDsluCounter, 5562 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6361 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:15,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6361 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:34:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-12-13 12:34:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 966. [2022-12-13 12:34:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 728 states have (on average 1.3214285714285714) internal successors, (962), 755 states have internal predecessors, (962), 161 states have call successors, (161), 72 states have call predecessors, (161), 76 states have return successors, (184), 160 states have call predecessors, (184), 160 states have call successors, (184) [2022-12-13 12:34:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1307 transitions. [2022-12-13 12:34:15,558 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1307 transitions. Word has length 339 [2022-12-13 12:34:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:15,558 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1307 transitions. [2022-12-13 12:34:15,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 12:34:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1307 transitions. [2022-12-13 12:34:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-12-13 12:34:15,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:15,562 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:15,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 12:34:15,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:15,763 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:15,763 INFO L85 PathProgramCache]: Analyzing trace with hash 975978884, now seen corresponding path program 1 times [2022-12-13 12:34:15,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:15,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013322612] [2022-12-13 12:34:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:15,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 12:34:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 12:34:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:34:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:34:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:34:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 12:34:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-12-13 12:34:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-12-13 12:34:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-12-13 12:34:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:34:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:34:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 12:34:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-12-13 12:34:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1295 trivial. 0 not checked. [2022-12-13 12:34:20,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:20,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013322612] [2022-12-13 12:34:20,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013322612] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:20,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451121556] [2022-12-13 12:34:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:20,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:20,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:20,945 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:20,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 12:34:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:22,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 3902 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:34:22,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2022-12-13 12:34:22,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:22,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451121556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:22,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:34:22,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2022-12-13 12:34:22,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299367980] [2022-12-13 12:34:22,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:22,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:34:22,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:34:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:34:22,426 INFO L87 Difference]: Start difference. First operand 966 states and 1307 transitions. Second operand has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-12-13 12:34:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:22,541 INFO L93 Difference]: Finished difference Result 1918 states and 2651 transitions. [2022-12-13 12:34:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:34:22,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 379 [2022-12-13 12:34:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:22,546 INFO L225 Difference]: With dead ends: 1918 [2022-12-13 12:34:22,546 INFO L226 Difference]: Without dead ends: 972 [2022-12-13 12:34:22,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:34:22,550 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 296 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:22,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 2843 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:34:22,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-12-13 12:34:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2022-12-13 12:34:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 732 states have (on average 1.3224043715846994) internal successors, (968), 761 states have internal predecessors, (968), 161 states have call successors, (161), 72 states have call predecessors, (161), 78 states have return successors, (188), 160 states have call predecessors, (188), 160 states have call successors, (188) [2022-12-13 12:34:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1317 transitions. [2022-12-13 12:34:22,617 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1317 transitions. Word has length 379 [2022-12-13 12:34:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:22,618 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1317 transitions. [2022-12-13 12:34:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-12-13 12:34:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1317 transitions. [2022-12-13 12:34:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-12-13 12:34:22,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:22,626 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:22,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 12:34:22,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:22,828 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1976659206, now seen corresponding path program 1 times [2022-12-13 12:34:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:22,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177647017] [2022-12-13 12:34:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 12:34:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:34:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 12:34:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:34:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 12:34:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:34:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-12-13 12:34:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-12-13 12:34:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-12-13 12:34:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:34:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 12:34:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:34:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-12-13 12:34:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2022-12-13 12:34:31,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:31,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177647017] [2022-12-13 12:34:31,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177647017] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:31,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660307251] [2022-12-13 12:34:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:31,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:31,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:31,115 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:31,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 12:34:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:33,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 3962 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 12:34:33,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 135 proven. 1 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2022-12-13 12:34:33,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2022-12-13 12:34:33,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660307251] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:34:33,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:34:33,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 17 [2022-12-13 12:34:33,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131793016] [2022-12-13 12:34:33,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:34:33,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 12:34:33,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:33,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 12:34:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:34:33,418 INFO L87 Difference]: Start difference. First operand 972 states and 1317 transitions. Second operand has 17 states, 15 states have (on average 13.333333333333334) internal successors, (200), 11 states have internal predecessors, (200), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-12-13 12:34:36,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:36,419 INFO L93 Difference]: Finished difference Result 2031 states and 2816 transitions. [2022-12-13 12:34:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:34:36,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 13.333333333333334) internal successors, (200), 11 states have internal predecessors, (200), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) Word has length 383 [2022-12-13 12:34:36,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:36,423 INFO L225 Difference]: With dead ends: 2031 [2022-12-13 12:34:36,423 INFO L226 Difference]: Without dead ends: 1079 [2022-12-13 12:34:36,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 847 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:34:36,426 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1272 mSDsluCounter, 5570 mSDsCounter, 0 mSdLazyCounter, 3180 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 6187 SdHoareTripleChecker+Invalid, 3719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 3180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:36,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 6187 Invalid, 3719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 3180 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 12:34:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-12-13 12:34:36,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 974. [2022-12-13 12:34:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 734 states have (on average 1.32425068119891) internal successors, (972), 763 states have internal predecessors, (972), 161 states have call successors, (161), 72 states have call predecessors, (161), 78 states have return successors, (188), 160 states have call predecessors, (188), 160 states have call successors, (188) [2022-12-13 12:34:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1321 transitions. [2022-12-13 12:34:36,492 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1321 transitions. Word has length 383 [2022-12-13 12:34:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:36,493 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1321 transitions. [2022-12-13 12:34:36,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 13.333333333333334) internal successors, (200), 11 states have internal predecessors, (200), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-12-13 12:34:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1321 transitions. [2022-12-13 12:34:36,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-12-13 12:34:36,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:36,496 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 10, 8, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:36,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 12:34:36,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 12:34:36,698 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1439462076, now seen corresponding path program 2 times [2022-12-13 12:34:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:36,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621323416] [2022-12-13 12:34:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:34:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 12:34:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 12:34:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:34:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:34:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:34:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-12-13 12:34:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-12-13 12:34:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-12-13 12:34:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:34:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:34:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:34:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-12-13 12:34:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1366 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2022-12-13 12:34:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:38,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621323416] [2022-12-13 12:34:38,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621323416] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:38,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006245949] [2022-12-13 12:34:38,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:34:38,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:38,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:38,746 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:38,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 12:34:42,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:34:42,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:42,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 4022 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 12:34:42,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1366 backedges. 150 proven. 3 refuted. 0 times theorem prover too weak. 1213 trivial. 0 not checked. [2022-12-13 12:34:42,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1366 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2022-12-13 12:34:43,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006245949] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:34:43,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:34:43,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 20 [2022-12-13 12:34:43,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456597911] [2022-12-13 12:34:43,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:34:43,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:34:43,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:43,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:34:43,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:34:43,216 INFO L87 Difference]: Start difference. First operand 974 states and 1321 transitions. Second operand has 20 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-12-13 12:34:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:34:46,280 INFO L93 Difference]: Finished difference Result 2039 states and 2830 transitions. [2022-12-13 12:34:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:34:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) Word has length 387 [2022-12-13 12:34:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:34:46,283 INFO L225 Difference]: With dead ends: 2039 [2022-12-13 12:34:46,284 INFO L226 Difference]: Without dead ends: 1085 [2022-12-13 12:34:46,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 853 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-12-13 12:34:46,287 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 951 mSDsluCounter, 5035 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 3591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:34:46,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 5649 Invalid, 3591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 12:34:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-12-13 12:34:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 976. [2022-12-13 12:34:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 736 states have (on average 1.326086956521739) internal successors, (976), 765 states have internal predecessors, (976), 161 states have call successors, (161), 72 states have call predecessors, (161), 78 states have return successors, (188), 160 states have call predecessors, (188), 160 states have call successors, (188) [2022-12-13 12:34:46,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1325 transitions. [2022-12-13 12:34:46,330 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1325 transitions. Word has length 387 [2022-12-13 12:34:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:34:46,330 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1325 transitions. [2022-12-13 12:34:46,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-12-13 12:34:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1325 transitions. [2022-12-13 12:34:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-12-13 12:34:46,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:34:46,334 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 12, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:46,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 12:34:46,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 12:34:46,534 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:34:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1208219974, now seen corresponding path program 3 times [2022-12-13 12:34:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:46,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778407556] [2022-12-13 12:34:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:46,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:34:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:34:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:34:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:34:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:34:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:34:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:34:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 12:34:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:34:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:34:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:34:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-12-13 12:34:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-12-13 12:34:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-12-13 12:34:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:34:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:34:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:34:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:34:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:34:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:34:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:34:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:34:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-12-13 12:34:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2022-12-13 12:34:48,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:48,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778407556] [2022-12-13 12:34:48,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778407556] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:48,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040829881] [2022-12-13 12:34:48,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:34:48,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:48,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:48,655 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:48,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 12:36:11,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:36:11,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:36:11,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 12:36:11,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 70 proven. 6 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2022-12-13 12:36:11,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2022-12-13 12:36:11,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040829881] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:11,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:11,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 23 [2022-12-13 12:36:11,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638237845] [2022-12-13 12:36:11,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:11,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 12:36:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 12:36:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:36:11,395 INFO L87 Difference]: Start difference. First operand 976 states and 1325 transitions. Second operand has 23 states, 22 states have (on average 9.590909090909092) internal successors, (211), 17 states have internal predecessors, (211), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) [2022-12-13 12:36:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:36:14,839 INFO L93 Difference]: Finished difference Result 2071 states and 2891 transitions. [2022-12-13 12:36:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 12:36:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 9.590909090909092) internal successors, (211), 17 states have internal predecessors, (211), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) Word has length 391 [2022-12-13 12:36:14,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:36:14,844 INFO L225 Difference]: With dead ends: 2071 [2022-12-13 12:36:14,844 INFO L226 Difference]: Without dead ends: 1115 [2022-12-13 12:36:14,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 860 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 12:36:14,848 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 858 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 2995 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 2995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:36:14,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 5179 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 2995 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 12:36:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-12-13 12:36:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1002. [2022-12-13 12:36:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 760 states have (on average 1.3421052631578947) internal successors, (1020), 789 states have internal predecessors, (1020), 161 states have call successors, (161), 74 states have call predecessors, (161), 80 states have return successors, (192), 160 states have call predecessors, (192), 160 states have call successors, (192) [2022-12-13 12:36:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1373 transitions. [2022-12-13 12:36:14,895 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1373 transitions. Word has length 391 [2022-12-13 12:36:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:36:14,895 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1373 transitions. [2022-12-13 12:36:14,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 9.590909090909092) internal successors, (211), 17 states have internal predecessors, (211), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) [2022-12-13 12:36:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1373 transitions. [2022-12-13 12:36:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-12-13 12:36:14,899 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:36:14,899 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 24, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:14,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 12:36:15,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 12:36:15,101 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:36:15,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:15,102 INFO L85 PathProgramCache]: Analyzing trace with hash -665383676, now seen corresponding path program 4 times [2022-12-13 12:36:15,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:15,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439957945] [2022-12-13 12:36:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:15,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:36:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:36:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:36:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:36:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:36:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:36:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:36:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 12:36:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:36:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 12:36:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:36:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:36:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:36:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:36:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 12:36:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:36:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:36:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:36:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:36:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:36:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:36:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:36:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-12-13 12:36:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-12-13 12:36:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 12:36:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:36:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:36:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:36:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:36:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:36:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:36:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:36:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-12-13 12:36:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 2 proven. 131 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2022-12-13 12:36:17,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:17,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439957945] [2022-12-13 12:36:17,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439957945] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:17,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290624424] [2022-12-13 12:36:17,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:36:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:17,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:17,593 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:17,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 12:36:18,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:36:18,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:36:18,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-13 12:36:18,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 238 proven. 10 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2022-12-13 12:36:19,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 2 proven. 131 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2022-12-13 12:36:19,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290624424] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:19,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:19,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 24 [2022-12-13 12:36:19,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775642323] [2022-12-13 12:36:19,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:19,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:36:19,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:36:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:36:19,488 INFO L87 Difference]: Start difference. First operand 1002 states and 1373 transitions. Second operand has 24 states, 22 states have (on average 9.409090909090908) internal successors, (207), 18 states have internal predecessors, (207), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-12-13 12:36:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:36:24,431 INFO L93 Difference]: Finished difference Result 2125 states and 2927 transitions. [2022-12-13 12:36:24,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 12:36:24,431 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 9.409090909090908) internal successors, (207), 18 states have internal predecessors, (207), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) Word has length 403 [2022-12-13 12:36:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:36:24,435 INFO L225 Difference]: With dead ends: 2125 [2022-12-13 12:36:24,435 INFO L226 Difference]: Without dead ends: 1147 [2022-12-13 12:36:24,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 883 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=324, Invalid=1568, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 12:36:24,438 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1127 mSDsluCounter, 7438 mSDsCounter, 0 mSdLazyCounter, 4575 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 8053 SdHoareTripleChecker+Invalid, 5165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 4575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:36:24,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 8053 Invalid, 5165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 4575 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 12:36:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-12-13 12:36:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1016. [2022-12-13 12:36:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 774 states have (on average 1.347545219638243) internal successors, (1043), 801 states have internal predecessors, (1043), 161 states have call successors, (161), 76 states have call predecessors, (161), 80 states have return successors, (186), 160 states have call predecessors, (186), 160 states have call successors, (186) [2022-12-13 12:36:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1390 transitions. [2022-12-13 12:36:24,493 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1390 transitions. Word has length 403 [2022-12-13 12:36:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:36:24,494 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1390 transitions. [2022-12-13 12:36:24,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 9.409090909090908) internal successors, (207), 18 states have internal predecessors, (207), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-12-13 12:36:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1390 transitions. [2022-12-13 12:36:24,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-12-13 12:36:24,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:36:24,497 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 26, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:24,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-13 12:36:24,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 12:36:24,699 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:36:24,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash 141366868, now seen corresponding path program 5 times [2022-12-13 12:36:24,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:24,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001895590] [2022-12-13 12:36:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:24,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:36:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:36:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:36:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:36:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:36:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:36:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 12:36:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:36:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:36:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 12:36:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:36:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:36:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:36:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:36:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 12:36:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:36:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:36:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:36:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:36:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:36:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:36:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:36:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-12-13 12:36:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-12-13 12:36:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-12-13 12:36:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:36:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:36:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:36:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:36:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:36:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:36:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:36:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:36:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-12-13 12:36:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 2 proven. 165 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2022-12-13 12:36:26,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:26,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001895590] [2022-12-13 12:36:26,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001895590] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:26,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874560701] [2022-12-13 12:36:26,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:36:26,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:26,930 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:26,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300d36b3-b07f-49da-9470-7e0fd73de196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process