./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.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_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/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_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/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_223657f7-e58e-4764-9ba6-4277cfb17be2/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 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- 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 19:27:24,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:27:24,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:27:24,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:27:24,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:27:24,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:27:24,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:27:24,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:27:24,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:27:24,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:27:24,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:27:24,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:27:24,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:27:24,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:27:24,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:27:24,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:27:24,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:27:24,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:27:24,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:27:24,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:27:24,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:27:24,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:27:24,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:27:24,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:27:24,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:27:24,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:27:24,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:27:24,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:27:24,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:27:24,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:27:24,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:27:24,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:27:24,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:27:24,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:27:24,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:27:24,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:27:24,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:27:24,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:27:24,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:27:24,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:27:24,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:27:24,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 19:27:24,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:27:24,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:27:24,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:27:24,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:27:24,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:27:24,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:27:24,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:27:24,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:27:24,220 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:27:24,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:27:24,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:27:24,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:27:24,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:27:24,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:27:24,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:27:24,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:27:24,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:27:24,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:27:24,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:27:24,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:27:24,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:27:24,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:27:24,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:27:24,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:27:24,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:27:24,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:27:24,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:27:24,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:27:24,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:27:24,224 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:27:24,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:27:24,224 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:27:24,224 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_223657f7-e58e-4764-9ba6-4277cfb17be2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2022-12-13 19:27:24,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:27:24,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:27:24,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:27:24,428 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:27:24,428 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:27:24,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-12-13 19:27:27,029 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:27:27,433 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:27:27,433 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-12-13 19:27:27,457 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/data/d54782ab3/3648b3a9d76b4797afd11c22bea074c6/FLAG14e1480c6 [2022-12-13 19:27:27,467 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/data/d54782ab3/3648b3a9d76b4797afd11c22bea074c6 [2022-12-13 19:27:27,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:27:27,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:27:27,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:27:27,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:27:27,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:27:27,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:27:27" (1/1) ... [2022-12-13 19:27:27,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570e499f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:27, skipping insertion in model container [2022-12-13 19:27:27,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:27:27" (1/1) ... [2022-12-13 19:27:27,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:27:27,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:27:27,989 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-13 19:27:27,990 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 19:27:28,087 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,127 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_223657f7-e58e-4764-9ba6-4277cfb17be2/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2022-12-13 19:27:28,172 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-13 19:27:28,172 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-13 19:27:28,179 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 19:27:28,179 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:27:28,207 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-13 19:27:28,240 WARN L623 FunctionHandler]: Unknown extern function alloc_can_err_skb [2022-12-13 19:27:28,242 WARN L623 FunctionHandler]: Unknown extern function can_bus_off [2022-12-13 19:27:28,246 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 19:27:28,251 WARN L623 FunctionHandler]: Unknown extern function alloc_can_skb [2022-12-13 19:27:28,253 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 19:27:28,258 WARN L623 FunctionHandler]: Unknown extern function can_get_echo_skb [2022-12-13 19:27:28,258 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-12-13 19:27:28,262 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-13 19:27:28,263 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,264 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,266 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,267 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-13 19:27:28,268 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,272 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 19:27:28,273 WARN L623 FunctionHandler]: Unknown extern function usb_free_coherent [2022-12-13 19:27:28,273 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-13 19:27:28,277 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:27:28,281 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:27:28,285 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:27:28,289 WARN L623 FunctionHandler]: Unknown extern function usb_bulk_msg [2022-12-13 19:27:28,293 WARN L623 FunctionHandler]: Unknown extern function usb_bulk_msg [2022-12-13 19:27:28,296 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-13 19:27:28,297 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_coherent [2022-12-13 19:27:28,297 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-13 19:27:28,299 WARN L623 FunctionHandler]: Unknown extern function usb_anchor_urb [2022-12-13 19:27:28,299 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-12-13 19:27:28,299 WARN L623 FunctionHandler]: Unknown extern function usb_free_coherent [2022-12-13 19:27:28,300 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,300 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-13 19:27:28,305 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-13 19:27:28,305 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,306 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,309 WARN L623 FunctionHandler]: Unknown extern function usb_kill_anchored_urbs [2022-12-13 19:27:28,309 WARN L623 FunctionHandler]: Unknown extern function usb_kill_anchored_urbs [2022-12-13 19:27:28,313 WARN L623 FunctionHandler]: Unknown extern function open_candev [2022-12-13 19:27:28,313 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-13 19:27:28,313 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-13 19:27:28,317 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,318 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 19:27:28,318 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_coherent [2022-12-13 19:27:28,318 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,319 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 19:27:28,321 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-13 19:27:28,322 WARN L623 FunctionHandler]: Unknown extern function usb_anchor_urb [2022-12-13 19:27:28,322 WARN L623 FunctionHandler]: Unknown extern function can_put_echo_skb [2022-12-13 19:27:28,323 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-12-13 19:27:28,323 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-12-13 19:27:28,323 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-13 19:27:28,324 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-13 19:27:28,324 WARN L623 FunctionHandler]: Unknown extern function usb_free_coherent [2022-12-13 19:27:28,328 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,329 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,330 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-13 19:27:28,330 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,336 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-13 19:27:28,336 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,345 WARN L623 FunctionHandler]: Unknown extern function alloc_candev [2022-12-13 19:27:28,345 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,347 WARN L623 FunctionHandler]: Unknown extern function register_candev [2022-12-13 19:27:28,347 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,347 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-12-13 19:27:28,348 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-13 19:27:28,352 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,352 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,353 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-13 19:27:28,353 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,353 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-13 19:27:28,353 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,354 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-13 19:27:28,354 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,355 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,355 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,358 WARN L623 FunctionHandler]: Unknown extern function device_remove_file [2022-12-13 19:27:28,358 WARN L623 FunctionHandler]: Unknown extern function device_remove_file [2022-12-13 19:27:28,359 WARN L623 FunctionHandler]: Unknown extern function device_remove_file [2022-12-13 19:27:28,359 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-13 19:27:28,360 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-12-13 19:27:28,378 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-13 19:27:28,381 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_2 [2022-12-13 19:27:28,382 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_2 [2022-12-13 19:27:28,385 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-12-13 19:27:28,385 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-12-13 19:27:28,391 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,398 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,416 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,416 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,417 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,422 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:27:28,449 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:27:28,535 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-12-13 19:27:28,536 WARN L623 FunctionHandler]: Unknown extern function __raw_spin_lock_init [2022-12-13 19:27:28,537 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,539 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_223657f7-e58e-4764-9ba6-4277cfb17be2/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2022-12-13 19:27:28,541 WARN L623 FunctionHandler]: Unknown extern function netpoll_trap [2022-12-13 19:27:28,541 WARN L623 FunctionHandler]: Unknown extern function __netif_schedule [2022-12-13 19:27:28,542 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 19:27:28,542 WARN L623 FunctionHandler]: Unknown extern function printk [2022-12-13 19:27:28,544 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-12-13 19:27:28,546 WARN L623 FunctionHandler]: Unknown extern function alloc_can_err_skb [2022-12-13 19:27:28,547 WARN L623 FunctionHandler]: Unknown extern function can_bus_off [2022-12-13 19:27:28,549 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 19:27:28,551 WARN L623 FunctionHandler]: Unknown extern function alloc_can_skb [2022-12-13 19:27:28,552 WARN L623 FunctionHandler]: Unknown extern function netif_rx [2022-12-13 19:27:28,553 WARN L623 FunctionHandler]: Unknown extern function can_get_echo_skb [2022-12-13 19:27:28,554 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-12-13 19:27:28,555 WARN L623 FunctionHandler]: Unknown extern function _dev_info [2022-12-13 19:27:28,557 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,563 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,567 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,569 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-13 19:27:28,572 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,574 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-12-13 19:27:28,577 WARN L623 FunctionHandler]: Unknown extern function usb_free_coherent [2022-12-13 19:27:28,578 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-13 19:27:28,579 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:27:28,589 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:27:28,591 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:27:28,592 WARN L623 FunctionHandler]: Unknown extern function usb_bulk_msg [2022-12-13 19:27:28,593 WARN L623 FunctionHandler]: Unknown extern function usb_bulk_msg [2022-12-13 19:27:28,594 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-13 19:27:28,596 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_coherent [2022-12-13 19:27:28,596 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-13 19:27:28,598 WARN L623 FunctionHandler]: Unknown extern function usb_anchor_urb [2022-12-13 19:27:28,598 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-12-13 19:27:28,598 WARN L623 FunctionHandler]: Unknown extern function usb_free_coherent [2022-12-13 19:27:28,599 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,599 WARN L623 FunctionHandler]: Unknown extern function dev_warn [2022-12-13 19:27:28,601 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-13 19:27:28,602 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,602 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,602 WARN L623 FunctionHandler]: Unknown extern function usb_kill_anchored_urbs [2022-12-13 19:27:28,605 WARN L623 FunctionHandler]: Unknown extern function usb_kill_anchored_urbs [2022-12-13 19:27:28,606 WARN L623 FunctionHandler]: Unknown extern function open_candev [2022-12-13 19:27:28,606 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-13 19:27:28,607 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-13 19:27:28,608 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,608 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 19:27:28,608 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_coherent [2022-12-13 19:27:28,609 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,609 WARN L623 FunctionHandler]: Unknown extern function consume_skb [2022-12-13 19:27:28,610 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-13 19:27:28,614 WARN L623 FunctionHandler]: Unknown extern function usb_anchor_urb [2022-12-13 19:27:28,614 WARN L623 FunctionHandler]: Unknown extern function can_put_echo_skb [2022-12-13 19:27:28,615 WARN L623 FunctionHandler]: Unknown extern function can_free_echo_skb [2022-12-13 19:27:28,615 WARN L623 FunctionHandler]: Unknown extern function usb_unanchor_urb [2022-12-13 19:27:28,615 WARN L623 FunctionHandler]: Unknown extern function netif_device_detach [2022-12-13 19:27:28,615 WARN L623 FunctionHandler]: Unknown extern function netdev_warn [2022-12-13 19:27:28,616 WARN L623 FunctionHandler]: Unknown extern function usb_free_coherent [2022-12-13 19:27:28,617 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,618 WARN L623 FunctionHandler]: Unknown extern function netdev_err [2022-12-13 19:27:28,618 WARN L623 FunctionHandler]: Unknown extern function close_candev [2022-12-13 19:27:28,618 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,620 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-13 19:27:28,620 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,622 WARN L623 FunctionHandler]: Unknown extern function alloc_candev [2022-12-13 19:27:28,622 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,623 WARN L623 FunctionHandler]: Unknown extern function register_candev [2022-12-13 19:27:28,624 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,624 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-12-13 19:27:28,626 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-12-13 19:27:28,628 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,628 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,629 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-13 19:27:28,629 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,629 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-13 19:27:28,629 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,630 WARN L623 FunctionHandler]: Unknown extern function device_create_file [2022-12-13 19:27:28,630 WARN L623 FunctionHandler]: Unknown extern function dev_err [2022-12-13 19:27:28,630 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,631 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 19:27:28,631 WARN L623 FunctionHandler]: Unknown extern function device_remove_file [2022-12-13 19:27:28,631 WARN L623 FunctionHandler]: Unknown extern function device_remove_file [2022-12-13 19:27:28,631 WARN L623 FunctionHandler]: Unknown extern function device_remove_file [2022-12-13 19:27:28,634 WARN L623 FunctionHandler]: Unknown extern function unregister_netdev [2022-12-13 19:27:28,634 WARN L623 FunctionHandler]: Unknown extern function free_candev [2022-12-13 19:27:28,637 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-12-13 19:27:28,639 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_init_2 [2022-12-13 19:27:28,639 WARN L623 FunctionHandler]: Unknown extern function ldv_ndo_uninit_2 [2022-12-13 19:27:28,641 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-12-13 19:27:28,642 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-12-13 19:27:28,642 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,644 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,646 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,646 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,646 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,648 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-12-13 19:27:28,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:27:28,687 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:27:28,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28 WrapperNode [2022-12-13 19:27:28,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:27:28,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:27:28,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:27:28,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:27:28,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,807 INFO L138 Inliner]: procedures = 160, calls = 847, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 2346 [2022-12-13 19:27:28,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:27:28,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:27:28,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:27:28,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:27:28,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,872 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:27:28,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:27:28,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:27:28,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:27:28,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (1/1) ... [2022-12-13 19:27:28,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:27:28,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:27:28,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:27:28,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:27:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-12-13 19:27:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-12-13 19:27:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2022-12-13 19:27:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2022-12-13 19:27:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_17 [2022-12-13 19:27:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_17 [2022-12-13 19:27:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2022-12-13 19:27:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2022-12-13 19:27:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-12-13 19:27:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-12-13 19:27:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-12-13 19:27:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-12-13 19:27:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:27:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-12-13 19:27:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-12-13 19:27:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure can_free_echo_skb [2022-12-13 19:27:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure can_free_echo_skb [2022-12-13 19:27:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-12-13 19:27:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-12-13 19:27:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-12-13 19:27:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-12-13 19:27:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-12-13 19:27:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-12-13 19:27:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-12-13 19:27:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-12-13 19:27:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 19:27:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 19:27:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-12-13 19:27:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-12-13 19:27:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-12-13 19:27:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-12-13 19:27:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-13 19:27:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-13 19:27:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-12-13 19:27:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-12-13 19:27:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:27:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-13 19:27:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-13 19:27:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-12-13 19:27:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-12-13 19:27:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-13 19:27:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-13 19:27:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 19:27:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 19:27:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-12-13 19:27:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-12-13 19:27:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:27:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-12-13 19:27:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-12-13 19:27:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_4 [2022-12-13 19:27:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_4 [2022-12-13 19:27:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:27:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-12-13 19:27:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-12-13 19:27:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-12-13 19:27:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-12-13 19:27:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:27:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:27:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-13 19:27:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-13 19:27:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-12-13 19:27:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-12-13 19:27:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-12-13 19:27:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-12-13 19:27:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 19:27:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-12-13 19:27:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-12-13 19:27:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-12-13 19:27:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-12-13 19:27:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-12-13 19:27:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-12-13 19:27:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:27:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 19:27:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-12-13 19:27:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-12-13 19:27:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2022-12-13 19:27:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2022-12-13 19:27:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_send_msg [2022-12-13 19:27:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_send_msg [2022-12-13 19:27:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-12-13 19:27:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-12-13 19:27:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-12-13 19:27:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-12-13 19:27:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-12-13 19:27:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-12-13 19:27:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-12-13 19:27:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-12-13 19:27:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-12-13 19:27:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-12-13 19:27:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-12-13 19:27:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-12-13 19:27:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-12-13 19:27:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-12-13 19:27:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:27:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-12-13 19:27:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-12-13 19:27:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-12-13 19:27:28,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-12-13 19:27:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-12-13 19:27:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-12-13 19:27:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_disconnect [2022-12-13 19:27:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_disconnect [2022-12-13 19:27:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:27:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:27:29,289 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:27:29,292 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:27:29,413 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-12-13 19:27:29,884 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-12-13 19:27:30,605 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:27:30,615 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:27:30,615 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:27:30,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:27:30 BoogieIcfgContainer [2022-12-13 19:27:30,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:27:30,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:27:30,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:27:30,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:27:30,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:27:27" (1/3) ... [2022-12-13 19:27:30,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599fa390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:27:30, skipping insertion in model container [2022-12-13 19:27:30,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:27:28" (2/3) ... [2022-12-13 19:27:30,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599fa390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:27:30, skipping insertion in model container [2022-12-13 19:27:30,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:27:30" (3/3) ... [2022-12-13 19:27:30,625 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2022-12-13 19:27:30,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:27:30,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:27:30,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:27:30,701 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;@17285a5c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:27:30,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:27:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 685 states, 497 states have (on average 1.3460764587525151) internal successors, (669), 525 states have internal predecessors, (669), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2022-12-13 19:27:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 19:27:30,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:30,719 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:30,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1756755140, now seen corresponding path program 1 times [2022-12-13 19:27:30,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:30,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71614131] [2022-12-13 19:27:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:30,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-13 19:27:31,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:31,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71614131] [2022-12-13 19:27:31,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71614131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:31,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:31,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:27:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535463081] [2022-12-13 19:27:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:27:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:27:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:27:31,226 INFO L87 Difference]: Start difference. First operand has 685 states, 497 states have (on average 1.3460764587525151) internal successors, (669), 525 states have internal predecessors, (669), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 19:27:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:33,124 INFO L93 Difference]: Finished difference Result 2145 states and 3064 transitions. [2022-12-13 19:27:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:27:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 83 [2022-12-13 19:27:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:33,141 INFO L225 Difference]: With dead ends: 2145 [2022-12-13 19:27:33,141 INFO L226 Difference]: Without dead ends: 1437 [2022-12-13 19:27:33,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:27:33,148 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 1252 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:33,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 2027 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 19:27:33,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2022-12-13 19:27:33,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1285. [2022-12-13 19:27:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 950 states have (on average 1.328421052631579) internal successors, (1262), 980 states have internal predecessors, (1262), 248 states have call successors, (248), 87 states have call predecessors, (248), 86 states have return successors, (243), 241 states have call predecessors, (243), 243 states have call successors, (243) [2022-12-13 19:27:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1753 transitions. [2022-12-13 19:27:33,265 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1753 transitions. Word has length 83 [2022-12-13 19:27:33,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:33,265 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1753 transitions. [2022-12-13 19:27:33,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 19:27:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1753 transitions. [2022-12-13 19:27:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 19:27:33,268 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:33,269 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:33,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:27:33,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -784445184, now seen corresponding path program 1 times [2022-12-13 19:27:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:33,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675781008] [2022-12-13 19:27:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:33,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-12-13 19:27:33,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:33,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675781008] [2022-12-13 19:27:33,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675781008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:33,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:33,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:27:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472066029] [2022-12-13 19:27:33,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:27:33,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:33,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:27:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:27:33,600 INFO L87 Difference]: Start difference. First operand 1285 states and 1753 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:35,466 INFO L93 Difference]: Finished difference Result 4108 states and 5697 transitions. [2022-12-13 19:27:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:27:35,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 93 [2022-12-13 19:27:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:35,486 INFO L225 Difference]: With dead ends: 4108 [2022-12-13 19:27:35,487 INFO L226 Difference]: Without dead ends: 2848 [2022-12-13 19:27:35,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:27:35,492 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1126 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:35,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 2153 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 19:27:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2022-12-13 19:27:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2534. [2022-12-13 19:27:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 1881 states have (on average 1.328548644338118) internal successors, (2499), 1937 states have internal predecessors, (2499), 480 states have call successors, (480), 173 states have call predecessors, (480), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-12-13 19:27:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3464 transitions. [2022-12-13 19:27:35,623 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3464 transitions. Word has length 93 [2022-12-13 19:27:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:35,624 INFO L495 AbstractCegarLoop]: Abstraction has 2534 states and 3464 transitions. [2022-12-13 19:27:35,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3464 transitions. [2022-12-13 19:27:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 19:27:35,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:35,628 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:35,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:27:35,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:35,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1451693715, now seen corresponding path program 1 times [2022-12-13 19:27:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421445912] [2022-12-13 19:27:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:36,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-12-13 19:27:36,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421445912] [2022-12-13 19:27:36,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421445912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:36,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:36,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:27:36,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557365970] [2022-12-13 19:27:36,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:36,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:27:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:27:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:27:36,024 INFO L87 Difference]: Start difference. First operand 2534 states and 3464 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:37,104 INFO L93 Difference]: Finished difference Result 2840 states and 3960 transitions. [2022-12-13 19:27:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:27:37,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 94 [2022-12-13 19:27:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:37,125 INFO L225 Difference]: With dead ends: 2840 [2022-12-13 19:27:37,125 INFO L226 Difference]: Without dead ends: 2837 [2022-12-13 19:27:37,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:27:37,129 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 1044 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:37,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1112 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 19:27:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-12-13 19:27:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2533. [2022-12-13 19:27:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1881 states have (on average 1.3280170122275385) internal successors, (2498), 1936 states have internal predecessors, (2498), 479 states have call successors, (479), 173 states have call predecessors, (479), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-12-13 19:27:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3462 transitions. [2022-12-13 19:27:37,284 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3462 transitions. Word has length 94 [2022-12-13 19:27:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:37,285 INFO L495 AbstractCegarLoop]: Abstraction has 2533 states and 3462 transitions. [2022-12-13 19:27:37,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3462 transitions. [2022-12-13 19:27:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 19:27:37,287 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:37,287 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:37,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:27:37,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2052527715, now seen corresponding path program 1 times [2022-12-13 19:27:37,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:37,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947917412] [2022-12-13 19:27:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:37,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-12-13 19:27:37,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:37,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947917412] [2022-12-13 19:27:37,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947917412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:37,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:37,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:27:37,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177603169] [2022-12-13 19:27:37,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:27:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:37,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:27:37,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:27:37,501 INFO L87 Difference]: Start difference. First operand 2533 states and 3462 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:38,589 INFO L93 Difference]: Finished difference Result 2839 states and 3958 transitions. [2022-12-13 19:27:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:27:38,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2022-12-13 19:27:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:38,599 INFO L225 Difference]: With dead ends: 2839 [2022-12-13 19:27:38,599 INFO L226 Difference]: Without dead ends: 2836 [2022-12-13 19:27:38,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:27:38,600 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1039 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:38,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1113 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 19:27:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2022-12-13 19:27:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2532. [2022-12-13 19:27:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 1881 states have (on average 1.327485380116959) internal successors, (2497), 1935 states have internal predecessors, (2497), 478 states have call successors, (478), 173 states have call predecessors, (478), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-12-13 19:27:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3460 transitions. [2022-12-13 19:27:38,747 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3460 transitions. Word has length 95 [2022-12-13 19:27:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:38,748 INFO L495 AbstractCegarLoop]: Abstraction has 2532 states and 3460 transitions. [2022-12-13 19:27:38,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:38,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3460 transitions. [2022-12-13 19:27:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 19:27:38,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:38,750 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:38,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:27:38,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -796449898, now seen corresponding path program 1 times [2022-12-13 19:27:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775498104] [2022-12-13 19:27:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:38,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-12-13 19:27:38,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:38,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775498104] [2022-12-13 19:27:38,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775498104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:38,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:38,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:27:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123941500] [2022-12-13 19:27:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:38,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:27:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:38,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:27:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:27:38,983 INFO L87 Difference]: Start difference. First operand 2532 states and 3460 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:40,063 INFO L93 Difference]: Finished difference Result 2838 states and 3956 transitions. [2022-12-13 19:27:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:27:40,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 96 [2022-12-13 19:27:40,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:40,072 INFO L225 Difference]: With dead ends: 2838 [2022-12-13 19:27:40,072 INFO L226 Difference]: Without dead ends: 2835 [2022-12-13 19:27:40,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:27:40,074 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1050 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:40,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1094 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 19:27:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-12-13 19:27:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2531. [2022-12-13 19:27:40,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 1881 states have (on average 1.3269537480063796) internal successors, (2496), 1934 states have internal predecessors, (2496), 477 states have call successors, (477), 173 states have call predecessors, (477), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-12-13 19:27:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3458 transitions. [2022-12-13 19:27:40,175 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3458 transitions. Word has length 96 [2022-12-13 19:27:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:40,175 INFO L495 AbstractCegarLoop]: Abstraction has 2531 states and 3458 transitions. [2022-12-13 19:27:40,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3458 transitions. [2022-12-13 19:27:40,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 19:27:40,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:40,176 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:40,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:27:40,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1079562182, now seen corresponding path program 1 times [2022-12-13 19:27:40,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:40,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231677564] [2022-12-13 19:27:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-12-13 19:27:40,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231677564] [2022-12-13 19:27:40,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231677564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:40,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:40,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:27:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404406897] [2022-12-13 19:27:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:40,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:27:40,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:27:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:27:40,334 INFO L87 Difference]: Start difference. First operand 2531 states and 3458 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:41,391 INFO L93 Difference]: Finished difference Result 2837 states and 3954 transitions. [2022-12-13 19:27:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:27:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 97 [2022-12-13 19:27:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:41,402 INFO L225 Difference]: With dead ends: 2837 [2022-12-13 19:27:41,402 INFO L226 Difference]: Without dead ends: 2825 [2022-12-13 19:27:41,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:27:41,404 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1047 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:41,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1093 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 19:27:41,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-12-13 19:27:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2521. [2022-12-13 19:27:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 1872 states have (on average 1.3263888888888888) internal successors, (2483), 1924 states have internal predecessors, (2483), 476 states have call successors, (476), 173 states have call predecessors, (476), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2022-12-13 19:27:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3444 transitions. [2022-12-13 19:27:41,557 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3444 transitions. Word has length 97 [2022-12-13 19:27:41,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:41,557 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 3444 transitions. [2022-12-13 19:27:41,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 19:27:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3444 transitions. [2022-12-13 19:27:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 19:27:41,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:41,563 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-12-13 19:27:41,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:27:41,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash -418987701, now seen corresponding path program 1 times [2022-12-13 19:27:41,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:41,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87941110] [2022-12-13 19:27:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:41,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 19:27:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:27:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:27:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 19:27:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:27:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-12-13 19:27:41,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:41,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87941110] [2022-12-13 19:27:41,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87941110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:41,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:41,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:27:41,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661651457] [2022-12-13 19:27:41,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:41,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:27:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:41,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:27:41,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:27:41,839 INFO L87 Difference]: Start difference. First operand 2521 states and 3444 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 19:27:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:43,540 INFO L93 Difference]: Finished difference Result 6490 states and 8935 transitions. [2022-12-13 19:27:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:27:43,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 142 [2022-12-13 19:27:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:43,551 INFO L225 Difference]: With dead ends: 6490 [2022-12-13 19:27:43,552 INFO L226 Difference]: Without dead ends: 3994 [2022-12-13 19:27:43,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:27:43,556 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 923 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:43,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 2341 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 19:27:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2022-12-13 19:27:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3418. [2022-12-13 19:27:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 2541 states have (on average 1.3140495867768596) internal successors, (3339), 2605 states have internal predecessors, (3339), 627 states have call successors, (627), 244 states have call predecessors, (627), 249 states have return successors, (654), 624 states have call predecessors, (654), 626 states have call successors, (654) [2022-12-13 19:27:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 4620 transitions. [2022-12-13 19:27:43,760 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 4620 transitions. Word has length 142 [2022-12-13 19:27:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:43,760 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 4620 transitions. [2022-12-13 19:27:43,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 19:27:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 4620 transitions. [2022-12-13 19:27:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 19:27:43,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:43,765 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 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] [2022-12-13 19:27:43,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:27:43,765 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1708712747, now seen corresponding path program 1 times [2022-12-13 19:27:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:43,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003280028] [2022-12-13 19:27:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:27:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 19:27:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 19:27:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:44,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:27:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 19:27:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-12-13 19:27:44,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:44,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003280028] [2022-12-13 19:27:44,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003280028] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:44,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:44,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:27:44,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175127620] [2022-12-13 19:27:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:27:44,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:27:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:27:44,037 INFO L87 Difference]: Start difference. First operand 3418 states and 4620 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 19:27:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:45,603 INFO L93 Difference]: Finished difference Result 8362 states and 11413 transitions. [2022-12-13 19:27:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:27:45,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2022-12-13 19:27:45,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:45,632 INFO L225 Difference]: With dead ends: 8362 [2022-12-13 19:27:45,632 INFO L226 Difference]: Without dead ends: 4976 [2022-12-13 19:27:45,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:27:45,643 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 1082 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:45,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1962 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 19:27:45,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2022-12-13 19:27:45,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4332. [2022-12-13 19:27:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 3237 states have (on average 1.3089280197713933) internal successors, (4237), 3309 states have internal predecessors, (4237), 775 states have call successors, (775), 314 states have call predecessors, (775), 319 states have return successors, (802), 772 states have call predecessors, (802), 774 states have call successors, (802) [2022-12-13 19:27:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 5814 transitions. [2022-12-13 19:27:46,007 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 5814 transitions. Word has length 159 [2022-12-13 19:27:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:46,008 INFO L495 AbstractCegarLoop]: Abstraction has 4332 states and 5814 transitions. [2022-12-13 19:27:46,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 19:27:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 5814 transitions. [2022-12-13 19:27:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-13 19:27:46,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:46,016 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 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] [2022-12-13 19:27:46,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:27:46,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:46,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1658519378, now seen corresponding path program 1 times [2022-12-13 19:27:46,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:46,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258293979] [2022-12-13 19:27:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:27:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 19:27:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 19:27:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:27:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 19:27:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-12-13 19:27:46,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:46,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258293979] [2022-12-13 19:27:46,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258293979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:46,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:46,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:27:46,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051362954] [2022-12-13 19:27:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:46,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:27:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:27:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:27:46,319 INFO L87 Difference]: Start difference. First operand 4332 states and 5814 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:27:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:49,113 INFO L93 Difference]: Finished difference Result 11564 states and 15673 transitions. [2022-12-13 19:27:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:27:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2022-12-13 19:27:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:49,130 INFO L225 Difference]: With dead ends: 11564 [2022-12-13 19:27:49,131 INFO L226 Difference]: Without dead ends: 7264 [2022-12-13 19:27:49,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:27:49,137 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1192 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:49,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 3196 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 19:27:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7264 states. [2022-12-13 19:27:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7264 to 6126. [2022-12-13 19:27:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6126 states, 4597 states have (on average 1.3088971068087882) internal successors, (6017), 4701 states have internal predecessors, (6017), 1041 states have call successors, (1041), 476 states have call predecessors, (1041), 487 states have return successors, (1082), 1036 states have call predecessors, (1082), 1040 states have call successors, (1082) [2022-12-13 19:27:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6126 states to 6126 states and 8140 transitions. [2022-12-13 19:27:49,510 INFO L78 Accepts]: Start accepts. Automaton has 6126 states and 8140 transitions. Word has length 173 [2022-12-13 19:27:49,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:49,510 INFO L495 AbstractCegarLoop]: Abstraction has 6126 states and 8140 transitions. [2022-12-13 19:27:49,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:27:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6126 states and 8140 transitions. [2022-12-13 19:27:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-12-13 19:27:49,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:49,516 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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 19:27:49,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:27:49,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1212811635, now seen corresponding path program 1 times [2022-12-13 19:27:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:49,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250814600] [2022-12-13 19:27:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:27:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:27:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:27:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 19:27:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:27:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 19:27:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 19:27:49,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:49,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250814600] [2022-12-13 19:27:49,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250814600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:27:49,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356501763] [2022-12-13 19:27:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:49,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:27:49,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:27:49,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:27:49,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:27:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:50,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:27:50,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-12-13 19:27:50,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:50,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356501763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:50,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:27:50,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-12-13 19:27:50,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594085716] [2022-12-13 19:27:50,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:27:50,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:50,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:27:50,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:27:50,316 INFO L87 Difference]: Start difference. First operand 6126 states and 8140 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 19:27:51,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:51,608 INFO L93 Difference]: Finished difference Result 18316 states and 24333 transitions. [2022-12-13 19:27:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:27:51,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 192 [2022-12-13 19:27:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:51,646 INFO L225 Difference]: With dead ends: 18316 [2022-12-13 19:27:51,646 INFO L226 Difference]: Without dead ends: 18308 [2022-12-13 19:27:51,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:27:51,651 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 2021 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:51,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2021 Valid, 2877 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 19:27:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18308 states. [2022-12-13 19:27:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18308 to 18274. [2022-12-13 19:27:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18274 states, 13717 states have (on average 1.3101261208719108) internal successors, (17971), 14045 states have internal predecessors, (17971), 3097 states have call successors, (3097), 1424 states have call predecessors, (3097), 1459 states have return successors, (3222), 3068 states have call predecessors, (3222), 3096 states have call successors, (3222) [2022-12-13 19:27:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18274 states to 18274 states and 24290 transitions. [2022-12-13 19:27:52,762 INFO L78 Accepts]: Start accepts. Automaton has 18274 states and 24290 transitions. Word has length 192 [2022-12-13 19:27:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:52,763 INFO L495 AbstractCegarLoop]: Abstraction has 18274 states and 24290 transitions. [2022-12-13 19:27:52,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 19:27:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 18274 states and 24290 transitions. [2022-12-13 19:27:52,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-13 19:27:52,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:52,773 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 3, 3, 3, 3, 3, 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] [2022-12-13 19:27:52,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:27:52,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:27:52,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:52,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:52,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1979397751, now seen corresponding path program 1 times [2022-12-13 19:27:52,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:52,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602583871] [2022-12-13 19:27:52,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:52,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:27:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:27:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:27:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 19:27:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:27:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 19:27:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-12-13 19:27:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-12-13 19:27:53,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:53,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602583871] [2022-12-13 19:27:53,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602583871] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:27:53,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047098483] [2022-12-13 19:27:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:53,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:27:53,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:27:53,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:27:53,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:27:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:53,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:27:53,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-12-13 19:27:53,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:53,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047098483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:53,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:27:53,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-12-13 19:27:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848726198] [2022-12-13 19:27:53,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:53,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:27:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:27:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:27:53,872 INFO L87 Difference]: Start difference. First operand 18274 states and 24290 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 19:27:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:54,525 INFO L93 Difference]: Finished difference Result 27894 states and 37090 transitions. [2022-12-13 19:27:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:27:54,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 202 [2022-12-13 19:27:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:54,544 INFO L225 Difference]: With dead ends: 27894 [2022-12-13 19:27:54,545 INFO L226 Difference]: Without dead ends: 9026 [2022-12-13 19:27:54,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:27:54,566 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 772 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:54,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1482 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:27:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2022-12-13 19:27:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 9026. [2022-12-13 19:27:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9026 states, 6766 states have (on average 1.3072716523795447) internal successors, (8845), 6930 states have internal predecessors, (8845), 1537 states have call successors, (1537), 705 states have call predecessors, (1537), 722 states have return successors, (1599), 1522 states have call predecessors, (1599), 1536 states have call successors, (1599) [2022-12-13 19:27:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9026 states to 9026 states and 11981 transitions. [2022-12-13 19:27:54,991 INFO L78 Accepts]: Start accepts. Automaton has 9026 states and 11981 transitions. Word has length 202 [2022-12-13 19:27:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:54,992 INFO L495 AbstractCegarLoop]: Abstraction has 9026 states and 11981 transitions. [2022-12-13 19:27:54,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 19:27:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 9026 states and 11981 transitions. [2022-12-13 19:27:54,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-12-13 19:27:54,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:54,999 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1] [2022-12-13 19:27:55,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:27:55,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:27:55,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1068633041, now seen corresponding path program 1 times [2022-12-13 19:27:55,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:55,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746797597] [2022-12-13 19:27:55,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:27:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:27:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:27:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 19:27:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:27:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 19:27:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 52 proven. 12 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-12-13 19:27:55,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:55,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746797597] [2022-12-13 19:27:55,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746797597] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:27:55,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942470738] [2022-12-13 19:27:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:55,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:27:55,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:27:55,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:27:55,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:27:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:55,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1973 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:27:55,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:27:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-12-13 19:27:55,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:27:55,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942470738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:55,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:27:55,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-12-13 19:27:55,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909973514] [2022-12-13 19:27:55,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:55,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:27:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:27:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:27:55,895 INFO L87 Difference]: Start difference. First operand 9026 states and 11981 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 19:27:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:56,368 INFO L93 Difference]: Finished difference Result 16694 states and 22203 transitions. [2022-12-13 19:27:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:27:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 206 [2022-12-13 19:27:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:56,390 INFO L225 Difference]: With dead ends: 16694 [2022-12-13 19:27:56,390 INFO L226 Difference]: Without dead ends: 8408 [2022-12-13 19:27:56,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:27:56,404 INFO L413 NwaCegarLoop]: 1257 mSDtfsCounter, 723 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:56,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1972 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:27:56,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8408 states. [2022-12-13 19:27:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8408 to 8400. [2022-12-13 19:27:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8400 states, 6299 states have (on average 1.3059215748531512) internal successors, (8226), 6456 states have internal predecessors, (8226), 1429 states have call successors, (1429), 654 states have call predecessors, (1429), 671 states have return successors, (1491), 1415 states have call predecessors, (1491), 1428 states have call successors, (1491) [2022-12-13 19:27:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8400 states to 8400 states and 11146 transitions. [2022-12-13 19:27:56,918 INFO L78 Accepts]: Start accepts. Automaton has 8400 states and 11146 transitions. Word has length 206 [2022-12-13 19:27:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:56,918 INFO L495 AbstractCegarLoop]: Abstraction has 8400 states and 11146 transitions. [2022-12-13 19:27:56,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 19:27:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 8400 states and 11146 transitions. [2022-12-13 19:27:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-12-13 19:27:56,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:56,926 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:56,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:27:57,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 19:27:57,127 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:57,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2131846912, now seen corresponding path program 1 times [2022-12-13 19:27:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:57,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151838385] [2022-12-13 19:27:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:27:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:27:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:27:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:27:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:27:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:27:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 19:27:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:27:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:27:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 19:27:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-12-13 19:27:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:27:57,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:27:57,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151838385] [2022-12-13 19:27:57,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151838385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:27:57,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:27:57,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:27:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232920888] [2022-12-13 19:27:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:27:57,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:27:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:27:57,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:27:57,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:27:57,463 INFO L87 Difference]: Start difference. First operand 8400 states and 11146 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-13 19:27:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:27:59,412 INFO L93 Difference]: Finished difference Result 17700 states and 23863 transitions. [2022-12-13 19:27:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:27:59,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 228 [2022-12-13 19:27:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:27:59,430 INFO L225 Difference]: With dead ends: 17700 [2022-12-13 19:27:59,430 INFO L226 Difference]: Without dead ends: 10040 [2022-12-13 19:27:59,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:27:59,440 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 496 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:27:59,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 2780 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 19:27:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10040 states. [2022-12-13 19:27:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10040 to 8406. [2022-12-13 19:27:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8406 states, 6305 states have (on average 1.3056304520222046) internal successors, (8232), 6462 states have internal predecessors, (8232), 1429 states have call successors, (1429), 654 states have call predecessors, (1429), 671 states have return successors, (1491), 1415 states have call predecessors, (1491), 1428 states have call successors, (1491) [2022-12-13 19:27:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8406 states to 8406 states and 11152 transitions. [2022-12-13 19:27:59,858 INFO L78 Accepts]: Start accepts. Automaton has 8406 states and 11152 transitions. Word has length 228 [2022-12-13 19:27:59,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:27:59,858 INFO L495 AbstractCegarLoop]: Abstraction has 8406 states and 11152 transitions. [2022-12-13 19:27:59,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-13 19:27:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand 8406 states and 11152 transitions. [2022-12-13 19:27:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-12-13 19:27:59,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:27:59,864 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 19:27:59,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:27:59,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:27:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:27:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1561917629, now seen corresponding path program 1 times [2022-12-13 19:27:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:27:59,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280886044] [2022-12-13 19:27:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:27:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:27:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:27:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:27:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:27:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:27:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:27:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:27:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:27:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:27:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:27:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:27:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:27:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 19:27:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:27:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:28:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:28:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 19:28:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 19:28:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 19:28:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 19:28:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 19:28:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-12-13 19:28:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-12-13 19:28:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-12-13 19:28:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:00,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280886044] [2022-12-13 19:28:00,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280886044] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:00,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:28:00,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 19:28:00,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193593736] [2022-12-13 19:28:00,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:00,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:28:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:00,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:28:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:28:00,065 INFO L87 Difference]: Start difference. First operand 8406 states and 11152 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 19:28:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:04,018 INFO L93 Difference]: Finished difference Result 29006 states and 40587 transitions. [2022-12-13 19:28:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:28:04,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 228 [2022-12-13 19:28:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:04,056 INFO L225 Difference]: With dead ends: 29006 [2022-12-13 19:28:04,056 INFO L226 Difference]: Without dead ends: 20636 [2022-12-13 19:28:04,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:28:04,069 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 3268 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 1622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3388 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1622 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:04,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3388 Valid, 2693 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1622 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 19:28:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20636 states. [2022-12-13 19:28:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20636 to 12405. [2022-12-13 19:28:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12405 states, 9388 states have (on average 1.3128461866212187) internal successors, (12325), 9625 states have internal predecessors, (12325), 2013 states have call successors, (2013), 974 states have call predecessors, (2013), 1003 states have return successors, (2109), 1995 states have call predecessors, (2109), 2012 states have call successors, (2109) [2022-12-13 19:28:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12405 states to 12405 states and 16447 transitions. [2022-12-13 19:28:04,881 INFO L78 Accepts]: Start accepts. Automaton has 12405 states and 16447 transitions. Word has length 228 [2022-12-13 19:28:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:04,881 INFO L495 AbstractCegarLoop]: Abstraction has 12405 states and 16447 transitions. [2022-12-13 19:28:04,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 19:28:04,881 INFO L276 IsEmpty]: Start isEmpty. Operand 12405 states and 16447 transitions. [2022-12-13 19:28:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-12-13 19:28:04,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:04,889 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 19:28:04,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:28:04,890 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash -764293213, now seen corresponding path program 2 times [2022-12-13 19:28:04,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:04,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47374820] [2022-12-13 19:28:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:04,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 19:28:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 19:28:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:28:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 19:28:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 19:28:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 19:28:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-12-13 19:28:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-12-13 19:28:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 19:28:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47374820] [2022-12-13 19:28:05,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47374820] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418586510] [2022-12-13 19:28:05,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:05,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:05,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:05,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:05,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:28:05,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:28:05,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:05,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:28:05,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-12-13 19:28:05,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:28:05,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418586510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:05,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:28:05,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 19:28:05,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851670810] [2022-12-13 19:28:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:05,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:28:05,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:05,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:28:05,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:28:05,736 INFO L87 Difference]: Start difference. First operand 12405 states and 16447 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 19:28:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:06,619 INFO L93 Difference]: Finished difference Result 28585 states and 37892 transitions. [2022-12-13 19:28:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:28:06,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 228 [2022-12-13 19:28:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:06,646 INFO L225 Difference]: With dead ends: 28585 [2022-12-13 19:28:06,646 INFO L226 Difference]: Without dead ends: 16216 [2022-12-13 19:28:06,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:28:06,660 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 868 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:06,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1751 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:28:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16216 states. [2022-12-13 19:28:07,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16216 to 15786. [2022-12-13 19:28:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15786 states, 12006 states have (on average 1.3185074129601866) internal successors, (15830), 12313 states have internal predecessors, (15830), 2478 states have call successors, (2478), 1260 states have call predecessors, (2478), 1301 states have return successors, (2608), 2461 states have call predecessors, (2608), 2477 states have call successors, (2608) [2022-12-13 19:28:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15786 states to 15786 states and 20916 transitions. [2022-12-13 19:28:07,708 INFO L78 Accepts]: Start accepts. Automaton has 15786 states and 20916 transitions. Word has length 228 [2022-12-13 19:28:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:07,709 INFO L495 AbstractCegarLoop]: Abstraction has 15786 states and 20916 transitions. [2022-12-13 19:28:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 19:28:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 15786 states and 20916 transitions. [2022-12-13 19:28:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-12-13 19:28:07,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:07,715 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:07,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:28:07,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 19:28:07,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1942242172, now seen corresponding path program 1 times [2022-12-13 19:28:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:07,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605054947] [2022-12-13 19:28:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:28:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 19:28:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:28:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 19:28:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 19:28:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 19:28:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:08,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:08,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605054947] [2022-12-13 19:28:08,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605054947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:08,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251973404] [2022-12-13 19:28:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:08,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:08,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:08,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:08,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:28:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:08,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:28:08,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-12-13 19:28:08,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:08,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251973404] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:28:08,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:28:08,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-12-13 19:28:08,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015994932] [2022-12-13 19:28:08,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:08,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:28:08,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:08,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:28:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:28:08,668 INFO L87 Difference]: Start difference. First operand 15786 states and 20916 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 19:28:11,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:11,362 INFO L93 Difference]: Finished difference Result 34821 states and 46870 transitions. [2022-12-13 19:28:11,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:28:11,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 230 [2022-12-13 19:28:11,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:11,395 INFO L225 Difference]: With dead ends: 34821 [2022-12-13 19:28:11,395 INFO L226 Difference]: Without dead ends: 19412 [2022-12-13 19:28:11,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:28:11,413 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 650 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:11,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 2933 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 19:28:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19412 states. [2022-12-13 19:28:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19412 to 15870. [2022-12-13 19:28:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15870 states, 12090 states have (on average 1.316294458229942) internal successors, (15914), 12397 states have internal predecessors, (15914), 2478 states have call successors, (2478), 1260 states have call predecessors, (2478), 1301 states have return successors, (2608), 2461 states have call predecessors, (2608), 2477 states have call successors, (2608) [2022-12-13 19:28:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15870 states to 15870 states and 21000 transitions. [2022-12-13 19:28:12,364 INFO L78 Accepts]: Start accepts. Automaton has 15870 states and 21000 transitions. Word has length 230 [2022-12-13 19:28:12,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:12,364 INFO L495 AbstractCegarLoop]: Abstraction has 15870 states and 21000 transitions. [2022-12-13 19:28:12,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 19:28:12,364 INFO L276 IsEmpty]: Start isEmpty. Operand 15870 states and 21000 transitions. [2022-12-13 19:28:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-12-13 19:28:12,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:12,371 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:12,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:28:12,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 19:28:12,574 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:12,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -353484842, now seen corresponding path program 1 times [2022-12-13 19:28:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:12,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753666337] [2022-12-13 19:28:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:12,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:28:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 19:28:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 19:28:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-12-13 19:28:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-12-13 19:28:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-12-13 19:28:12,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:12,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753666337] [2022-12-13 19:28:12,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753666337] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:12,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775515267] [2022-12-13 19:28:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:12,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:12,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:12,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:12,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:28:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:13,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:28:13,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-12-13 19:28:13,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:28:13,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775515267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:13,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:28:13,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-12-13 19:28:13,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873089652] [2022-12-13 19:28:13,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:13,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:28:13,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:13,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:28:13,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:28:13,190 INFO L87 Difference]: Start difference. First operand 15870 states and 21000 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 19:28:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:14,620 INFO L93 Difference]: Finished difference Result 36375 states and 49080 transitions. [2022-12-13 19:28:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:28:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 234 [2022-12-13 19:28:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:14,659 INFO L225 Difference]: With dead ends: 36375 [2022-12-13 19:28:14,659 INFO L226 Difference]: Without dead ends: 20882 [2022-12-13 19:28:14,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:28:14,682 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 476 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:14,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 3118 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:28:14,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20882 states. [2022-12-13 19:28:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20882 to 15898. [2022-12-13 19:28:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 12118 states have (on average 1.3155636243604556) internal successors, (15942), 12425 states have internal predecessors, (15942), 2478 states have call successors, (2478), 1260 states have call predecessors, (2478), 1301 states have return successors, (2608), 2461 states have call predecessors, (2608), 2477 states have call successors, (2608) [2022-12-13 19:28:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 21028 transitions. [2022-12-13 19:28:15,859 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 21028 transitions. Word has length 234 [2022-12-13 19:28:15,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:15,860 INFO L495 AbstractCegarLoop]: Abstraction has 15898 states and 21028 transitions. [2022-12-13 19:28:15,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 19:28:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 21028 transitions. [2022-12-13 19:28:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-12-13 19:28:15,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:15,867 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:15,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:28:16,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 19:28:16,069 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:16,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash 747645168, now seen corresponding path program 2 times [2022-12-13 19:28:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:16,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818509784] [2022-12-13 19:28:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:28:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 19:28:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:28:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 19:28:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-12-13 19:28:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-12-13 19:28:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:16,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818509784] [2022-12-13 19:28:16,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818509784] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:16,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342440552] [2022-12-13 19:28:16,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:16,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:16,444 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:16,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:28:16,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:28:16,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:16,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:28:16,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-12-13 19:28:16,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:16,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342440552] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:28:16,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:28:16,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-12-13 19:28:16,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162304575] [2022-12-13 19:28:16,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:16,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:28:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:16,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:28:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:28:16,999 INFO L87 Difference]: Start difference. First operand 15898 states and 21028 transitions. Second operand has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 19:28:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:20,028 INFO L93 Difference]: Finished difference Result 35129 states and 47220 transitions. [2022-12-13 19:28:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:28:20,029 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 236 [2022-12-13 19:28:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:20,067 INFO L225 Difference]: With dead ends: 35129 [2022-12-13 19:28:20,067 INFO L226 Difference]: Without dead ends: 19608 [2022-12-13 19:28:20,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:28:20,087 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 773 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:20,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 3574 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 19:28:20,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19608 states. [2022-12-13 19:28:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19608 to 16066. [2022-12-13 19:28:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16066 states, 12286 states have (on average 1.3112485756145207) internal successors, (16110), 12593 states have internal predecessors, (16110), 2478 states have call successors, (2478), 1260 states have call predecessors, (2478), 1301 states have return successors, (2608), 2461 states have call predecessors, (2608), 2477 states have call successors, (2608) [2022-12-13 19:28:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16066 states to 16066 states and 21196 transitions. [2022-12-13 19:28:21,343 INFO L78 Accepts]: Start accepts. Automaton has 16066 states and 21196 transitions. Word has length 236 [2022-12-13 19:28:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:21,344 INFO L495 AbstractCegarLoop]: Abstraction has 16066 states and 21196 transitions. [2022-12-13 19:28:21,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 19:28:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 16066 states and 21196 transitions. [2022-12-13 19:28:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-12-13 19:28:21,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:21,351 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 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, 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 19:28:21,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:28:21,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 19:28:21,553 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:21,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash 725060080, now seen corresponding path program 1 times [2022-12-13 19:28:21,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:21,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769553302] [2022-12-13 19:28:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:28:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 19:28:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 19:28:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 19:28:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:22,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-12-13 19:28:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:22,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-12-13 19:28:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-12-13 19:28:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-12-13 19:28:22,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:22,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769553302] [2022-12-13 19:28:22,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769553302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:22,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196647483] [2022-12-13 19:28:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:22,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:22,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:22,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:22,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:28:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:22,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:28:22,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-12-13 19:28:22,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:28:22,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196647483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:22,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:28:22,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-12-13 19:28:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780861230] [2022-12-13 19:28:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:28:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:28:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:28:22,576 INFO L87 Difference]: Start difference. First operand 16066 states and 21196 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-13 19:28:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:24,434 INFO L93 Difference]: Finished difference Result 42868 states and 56929 transitions. [2022-12-13 19:28:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:28:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 244 [2022-12-13 19:28:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:24,485 INFO L225 Difference]: With dead ends: 42868 [2022-12-13 19:28:24,485 INFO L226 Difference]: Without dead ends: 27179 [2022-12-13 19:28:24,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:28:24,505 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 1001 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:24,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 4007 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:28:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27179 states. [2022-12-13 19:28:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27179 to 20021. [2022-12-13 19:28:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20021 states, 15355 states have (on average 1.310517746662325) internal successors, (20123), 15729 states have internal predecessors, (20123), 3055 states have call successors, (3055), 1560 states have call predecessors, (3055), 1610 states have return successors, (3213), 3027 states have call predecessors, (3213), 3054 states have call successors, (3213) [2022-12-13 19:28:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20021 states to 20021 states and 26391 transitions. [2022-12-13 19:28:26,268 INFO L78 Accepts]: Start accepts. Automaton has 20021 states and 26391 transitions. Word has length 244 [2022-12-13 19:28:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:26,268 INFO L495 AbstractCegarLoop]: Abstraction has 20021 states and 26391 transitions. [2022-12-13 19:28:26,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-13 19:28:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 20021 states and 26391 transitions. [2022-12-13 19:28:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-12-13 19:28:26,276 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:26,276 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:26,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:28:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:26,477 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -185958696, now seen corresponding path program 3 times [2022-12-13 19:28:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:26,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95359843] [2022-12-13 19:28:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:28:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 19:28:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:28:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 19:28:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:28:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-12-13 19:28:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-12-13 19:28:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:27,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:27,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95359843] [2022-12-13 19:28:27,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95359843] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:27,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941723296] [2022-12-13 19:28:27,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:28:27,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:27,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:27,077 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:27,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:28:27,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:28:27,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:27,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 19:28:27,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-12-13 19:28:27,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:28:27,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941723296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:27,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:28:27,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2022-12-13 19:28:27,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124727410] [2022-12-13 19:28:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:27,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:28:27,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:28:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:28:27,619 INFO L87 Difference]: Start difference. First operand 20021 states and 26391 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 19:28:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:29,124 INFO L93 Difference]: Finished difference Result 39853 states and 52663 transitions. [2022-12-13 19:28:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:28:29,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 248 [2022-12-13 19:28:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:29,169 INFO L225 Difference]: With dead ends: 39853 [2022-12-13 19:28:29,169 INFO L226 Difference]: Without dead ends: 20209 [2022-12-13 19:28:29,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-12-13 19:28:29,194 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 863 mSDsluCounter, 4511 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 5744 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:29,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 5744 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:28:29,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20209 states. [2022-12-13 19:28:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20209 to 20140. [2022-12-13 19:28:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 15440 states have (on average 1.3088082901554403) internal successors, (20208), 15814 states have internal predecessors, (20208), 3072 states have call successors, (3072), 1560 states have call predecessors, (3072), 1627 states have return successors, (3331), 3061 states have call predecessors, (3331), 3071 states have call successors, (3331) [2022-12-13 19:28:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 26611 transitions. [2022-12-13 19:28:30,609 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 26611 transitions. Word has length 248 [2022-12-13 19:28:30,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:30,609 INFO L495 AbstractCegarLoop]: Abstraction has 20140 states and 26611 transitions. [2022-12-13 19:28:30,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 19:28:30,609 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 26611 transitions. [2022-12-13 19:28:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-12-13 19:28:30,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:30,617 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:30,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:28:30,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-13 19:28:30,819 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:30,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1419149710, now seen corresponding path program 1 times [2022-12-13 19:28:30,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:30,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713176282] [2022-12-13 19:28:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:28:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 19:28:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:28:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 19:28:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:28:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-12-13 19:28:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-12-13 19:28:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:31,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:31,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713176282] [2022-12-13 19:28:31,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713176282] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:31,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969512862] [2022-12-13 19:28:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:31,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:31,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:31,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:31,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:28:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:31,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:28:31,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 42 proven. 100 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-12-13 19:28:31,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:31,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969512862] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:28:31,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:28:31,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 29 [2022-12-13 19:28:31,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607803178] [2022-12-13 19:28:31,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:31,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 19:28:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:31,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 19:28:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=499, Unknown=0, NotChecked=0, Total=812 [2022-12-13 19:28:31,827 INFO L87 Difference]: Start difference. First operand 20140 states and 26611 transitions. Second operand has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-13 19:28:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:35,255 INFO L93 Difference]: Finished difference Result 44548 states and 59742 transitions. [2022-12-13 19:28:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 19:28:35,256 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 254 [2022-12-13 19:28:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:35,307 INFO L225 Difference]: With dead ends: 44548 [2022-12-13 19:28:35,307 INFO L226 Difference]: Without dead ends: 24785 [2022-12-13 19:28:35,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=319, Invalid=551, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:28:35,327 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 769 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 2509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:35,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 3068 Invalid, 2509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 19:28:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24785 states. [2022-12-13 19:28:36,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24785 to 20620. [2022-12-13 19:28:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20620 states, 15920 states have (on average 1.2994974874371858) internal successors, (20688), 16294 states have internal predecessors, (20688), 3072 states have call successors, (3072), 1560 states have call predecessors, (3072), 1627 states have return successors, (3331), 3061 states have call predecessors, (3331), 3071 states have call successors, (3331) [2022-12-13 19:28:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20620 states to 20620 states and 27091 transitions. [2022-12-13 19:28:36,848 INFO L78 Accepts]: Start accepts. Automaton has 20620 states and 27091 transitions. Word has length 254 [2022-12-13 19:28:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:36,849 INFO L495 AbstractCegarLoop]: Abstraction has 20620 states and 27091 transitions. [2022-12-13 19:28:36,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-13 19:28:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 20620 states and 27091 transitions. [2022-12-13 19:28:36,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-12-13 19:28:36,857 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:36,858 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:36,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 19:28:37,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:37,059 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash 192977515, now seen corresponding path program 1 times [2022-12-13 19:28:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:37,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470393051] [2022-12-13 19:28:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:28:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 19:28:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 19:28:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 19:28:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 19:28:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 19:28:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 19:28:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:28:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 19:28:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-12-13 19:28:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-12-13 19:28:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-12-13 19:28:37,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:37,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470393051] [2022-12-13 19:28:37,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470393051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:37,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:28:37,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 19:28:37,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270732110] [2022-12-13 19:28:37,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:37,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:28:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:37,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:28:37,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:28:37,378 INFO L87 Difference]: Start difference. First operand 20620 states and 27091 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-13 19:28:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:44,434 INFO L93 Difference]: Finished difference Result 58619 states and 78653 transitions. [2022-12-13 19:28:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:28:44,434 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 277 [2022-12-13 19:28:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:44,504 INFO L225 Difference]: With dead ends: 58619 [2022-12-13 19:28:44,504 INFO L226 Difference]: Without dead ends: 38376 [2022-12-13 19:28:44,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:28:44,527 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 2174 mSDsluCounter, 6007 mSDsCounter, 0 mSdLazyCounter, 5349 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 7012 SdHoareTripleChecker+Invalid, 6124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 5349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:44,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2218 Valid, 7012 Invalid, 6124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 5349 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 19:28:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38376 states. [2022-12-13 19:28:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38376 to 20750. [2022-12-13 19:28:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20750 states, 16016 states have (on average 1.298951048951049) internal successors, (20804), 16396 states have internal predecessors, (20804), 3106 states have call successors, (3106), 1560 states have call predecessors, (3106), 1627 states have return successors, (3365), 3089 states have call predecessors, (3365), 3105 states have call successors, (3365) [2022-12-13 19:28:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20750 states to 20750 states and 27275 transitions. [2022-12-13 19:28:46,326 INFO L78 Accepts]: Start accepts. Automaton has 20750 states and 27275 transitions. Word has length 277 [2022-12-13 19:28:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:46,327 INFO L495 AbstractCegarLoop]: Abstraction has 20750 states and 27275 transitions. [2022-12-13 19:28:46,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-13 19:28:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 20750 states and 27275 transitions. [2022-12-13 19:28:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-12-13 19:28:46,334 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:46,334 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:46,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 19:28:46,334 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash 846084674, now seen corresponding path program 2 times [2022-12-13 19:28:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:46,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938286919] [2022-12-13 19:28:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:28:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 19:28:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:28:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-12-13 19:28:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:28:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-12-13 19:28:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-12-13 19:28:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:47,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938286919] [2022-12-13 19:28:47,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938286919] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:47,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586005114] [2022-12-13 19:28:47,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:47,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:47,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:47,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:28:47,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:28:47,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:47,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 19:28:47,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 42 proven. 484 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-12-13 19:28:47,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:28:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:48,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586005114] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:28:48,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:28:48,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 25] total 53 [2022-12-13 19:28:48,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920632003] [2022-12-13 19:28:48,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:28:48,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 19:28:48,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 19:28:48,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1567, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 19:28:48,186 INFO L87 Difference]: Start difference. First operand 20750 states and 27275 transitions. Second operand has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-13 19:28:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:51,995 INFO L93 Difference]: Finished difference Result 46248 states and 61790 transitions. [2022-12-13 19:28:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 19:28:51,997 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 278 [2022-12-13 19:28:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:52,044 INFO L225 Difference]: With dead ends: 46248 [2022-12-13 19:28:52,044 INFO L226 Difference]: Without dead ends: 25875 [2022-12-13 19:28:52,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1195, Invalid=1667, Unknown=0, NotChecked=0, Total=2862 [2022-12-13 19:28:52,066 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 795 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:52,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 3149 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 19:28:52,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25875 states. [2022-12-13 19:28:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25875 to 21710. [2022-12-13 19:28:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21710 states, 16976 states have (on average 1.2820452403393026) internal successors, (21764), 17356 states have internal predecessors, (21764), 3106 states have call successors, (3106), 1560 states have call predecessors, (3106), 1627 states have return successors, (3365), 3089 states have call predecessors, (3365), 3105 states have call successors, (3365) [2022-12-13 19:28:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21710 states to 21710 states and 28235 transitions. [2022-12-13 19:28:53,949 INFO L78 Accepts]: Start accepts. Automaton has 21710 states and 28235 transitions. Word has length 278 [2022-12-13 19:28:53,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:53,949 INFO L495 AbstractCegarLoop]: Abstraction has 21710 states and 28235 transitions. [2022-12-13 19:28:53,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-12-13 19:28:53,950 INFO L276 IsEmpty]: Start isEmpty. Operand 21710 states and 28235 transitions. [2022-12-13 19:28:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-12-13 19:28:53,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:53,958 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:53,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 19:28:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:54,160 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:28:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1354735134, now seen corresponding path program 3 times [2022-12-13 19:28:54,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:28:54,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852631382] [2022-12-13 19:28:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:28:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:28:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:28:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:28:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:28:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:28:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:28:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:28:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:28:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:28:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:28:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:28:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:28:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:28:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:28:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-12-13 19:28:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:28:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-12-13 19:28:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:28:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:28:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:28:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-12-13 19:28:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-12-13 19:28:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:28:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:28:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:28:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852631382] [2022-12-13 19:28:56,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852631382] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:28:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986742209] [2022-12-13 19:28:56,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:28:56,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:28:56,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:28:56,332 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:28:56,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:28:56,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:28:56,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:56,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-13 19:28:56,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2451 trivial. 0 not checked. [2022-12-13 19:28:57,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:28:57,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986742209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:57,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:28:57,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [53] total 65 [2022-12-13 19:28:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805953751] [2022-12-13 19:28:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:57,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:28:57,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:28:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:28:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1214, Invalid=2946, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 19:28:57,157 INFO L87 Difference]: Start difference. First operand 21710 states and 28235 transitions. Second operand has 14 states, 13 states have (on average 10.307692307692308) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) [2022-12-13 19:29:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:03,433 INFO L93 Difference]: Finished difference Result 61052 states and 81547 transitions. [2022-12-13 19:29:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 19:29:03,434 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.307692307692308) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) Word has length 326 [2022-12-13 19:29:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:03,517 INFO L225 Difference]: With dead ends: 61052 [2022-12-13 19:29:03,517 INFO L226 Difference]: Without dead ends: 39719 [2022-12-13 19:29:03,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1291, Invalid=5029, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 19:29:03,548 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 3124 mSDsluCounter, 19693 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 21400 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:03,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3184 Valid, 21400 Invalid, 2164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [432 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 19:29:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39719 states. [2022-12-13 19:29:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39719 to 21693. [2022-12-13 19:29:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21693 states, 16959 states have (on average 1.2797334748511116) internal successors, (21703), 17339 states have internal predecessors, (21703), 3106 states have call successors, (3106), 1560 states have call predecessors, (3106), 1627 states have return successors, (3365), 3089 states have call predecessors, (3365), 3105 states have call successors, (3365) [2022-12-13 19:29:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21693 states to 21693 states and 28174 transitions. [2022-12-13 19:29:06,418 INFO L78 Accepts]: Start accepts. Automaton has 21693 states and 28174 transitions. Word has length 326 [2022-12-13 19:29:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:06,418 INFO L495 AbstractCegarLoop]: Abstraction has 21693 states and 28174 transitions. [2022-12-13 19:29:06,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.307692307692308) internal successors, (134), 11 states have internal predecessors, (134), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) [2022-12-13 19:29:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 21693 states and 28174 transitions. [2022-12-13 19:29:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-12-13 19:29:06,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:06,429 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:06,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:29:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 19:29:06,631 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:06,632 INFO L85 PathProgramCache]: Analyzing trace with hash -736393774, now seen corresponding path program 1 times [2022-12-13 19:29:06,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:06,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922587272] [2022-12-13 19:29:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:29:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:29:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:29:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:29:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:29:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:29:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:29:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:29:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:29:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:29:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:29:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:29:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:29:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:29:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-12-13 19:29:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:29:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-12-13 19:29:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:29:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-12-13 19:29:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-12-13 19:29:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-12-13 19:29:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-12-13 19:29:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-12-13 19:29:08,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:08,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922587272] [2022-12-13 19:29:08,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922587272] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:29:08,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051882482] [2022-12-13 19:29:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:08,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:29:08,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:29:08,630 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:29:08,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:29:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:09,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 19:29:09,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:29:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 46 proven. 2116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 19:29:09,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:29:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-12-13 19:29:10,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051882482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:29:10,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:29:10,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 72 [2022-12-13 19:29:10,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141543468] [2022-12-13 19:29:10,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:29:10,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-13 19:29:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-13 19:29:10,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2227, Invalid=2885, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 19:29:10,361 INFO L87 Difference]: Start difference. First operand 21693 states and 28174 transitions. Second operand has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-13 19:29:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:15,536 INFO L93 Difference]: Finished difference Result 47945 states and 63279 transitions. [2022-12-13 19:29:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-13 19:29:15,537 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 346 [2022-12-13 19:29:15,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:15,590 INFO L225 Difference]: With dead ends: 47945 [2022-12-13 19:29:15,590 INFO L226 Difference]: Without dead ends: 26629 [2022-12-13 19:29:15,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 696 SyntacticMatches, 30 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1453 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2234, Invalid=3022, Unknown=0, NotChecked=0, Total=5256 [2022-12-13 19:29:15,618 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 640 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 3672 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 4024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 3672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:15,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 3470 Invalid, 4024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 3672 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 19:29:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26629 states. [2022-12-13 19:29:18,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26629 to 22413. [2022-12-13 19:29:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22413 states, 17679 states have (on average 1.2683409695118502) internal successors, (22423), 18059 states have internal predecessors, (22423), 3106 states have call successors, (3106), 1560 states have call predecessors, (3106), 1627 states have return successors, (3365), 3089 states have call predecessors, (3365), 3105 states have call successors, (3365) [2022-12-13 19:29:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22413 states to 22413 states and 28894 transitions. [2022-12-13 19:29:18,193 INFO L78 Accepts]: Start accepts. Automaton has 22413 states and 28894 transitions. Word has length 346 [2022-12-13 19:29:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:18,193 INFO L495 AbstractCegarLoop]: Abstraction has 22413 states and 28894 transitions. [2022-12-13 19:29:18,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-13 19:29:18,193 INFO L276 IsEmpty]: Start isEmpty. Operand 22413 states and 28894 transitions. [2022-12-13 19:29:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-12-13 19:29:18,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:18,203 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:18,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 19:29:18,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 19:29:18,406 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:18,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1380798070, now seen corresponding path program 2 times [2022-12-13 19:29:18,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:18,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92086305] [2022-12-13 19:29:18,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:18,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:29:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:29:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:29:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:29:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:29:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:29:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:29:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:29:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:29:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:29:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:29:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:29:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:29:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:29:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-12-13 19:29:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:29:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-12-13 19:29:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:29:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-12-13 19:29:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-12-13 19:29:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-12-13 19:29:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-12-13 19:29:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 4437 trivial. 0 not checked. [2022-12-13 19:29:19,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:19,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92086305] [2022-12-13 19:29:19,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92086305] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:29:19,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322674393] [2022-12-13 19:29:19,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:29:19,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:29:19,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:29:19,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:29:19,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 19:29:20,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:29:20,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:29:20,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 3228 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-13 19:29:20,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:29:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 4401 trivial. 0 not checked. [2022-12-13 19:29:20,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:29:20,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322674393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:20,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:29:20,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 20 [2022-12-13 19:29:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223019709] [2022-12-13 19:29:20,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:20,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:29:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:29:20,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:29:20,620 INFO L87 Difference]: Start difference. First operand 22413 states and 28894 transitions. Second operand has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-13 19:29:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:27,257 INFO L93 Difference]: Finished difference Result 73612 states and 96356 transitions. [2022-12-13 19:29:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 19:29:27,257 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 3 states have call successors, (28) Word has length 382 [2022-12-13 19:29:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:27,349 INFO L225 Difference]: With dead ends: 73612 [2022-12-13 19:29:27,350 INFO L226 Difference]: Without dead ends: 51576 [2022-12-13 19:29:27,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=1064, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 19:29:27,378 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 1870 mSDsluCounter, 16469 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 17802 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:27,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 17802 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 19:29:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51576 states. [2022-12-13 19:29:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51576 to 30461. [2022-12-13 19:29:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30461 states, 23978 states have (on average 1.267953957794645) internal successors, (30403), 24469 states have internal predecessors, (30403), 4250 states have call successors, (4250), 2114 states have call predecessors, (4250), 2232 states have return successors, (4661), 4284 states have call predecessors, (4661), 4249 states have call successors, (4661) [2022-12-13 19:29:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30461 states to 30461 states and 39314 transitions. [2022-12-13 19:29:31,229 INFO L78 Accepts]: Start accepts. Automaton has 30461 states and 39314 transitions. Word has length 382 [2022-12-13 19:29:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:31,230 INFO L495 AbstractCegarLoop]: Abstraction has 30461 states and 39314 transitions. [2022-12-13 19:29:31,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-13 19:29:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 30461 states and 39314 transitions. [2022-12-13 19:29:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-12-13 19:29:31,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:31,243 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:31,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 19:29:31,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 19:29:31,445 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:31,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1510929040, now seen corresponding path program 3 times [2022-12-13 19:29:31,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:31,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703585811] [2022-12-13 19:29:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:29:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:29:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:29:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:29:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:29:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:29:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:29:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:29:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:29:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:29:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:29:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:29:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:29:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:29:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:29:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:29:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-12-13 19:29:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:29:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-12-13 19:29:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-12-13 19:29:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-12-13 19:29:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-12-13 19:29:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 4441 trivial. 0 not checked. [2022-12-13 19:29:33,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:33,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703585811] [2022-12-13 19:29:33,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703585811] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:29:33,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232373202] [2022-12-13 19:29:33,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:29:33,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:29:33,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:29:33,995 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:29:33,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 19:29:34,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 19:29:34,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:29:34,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-13 19:29:34,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:29:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 4435 trivial. 0 not checked. [2022-12-13 19:29:34,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:29:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4447 trivial. 0 not checked. [2022-12-13 19:29:35,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232373202] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:29:35,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:29:35,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20, 16] total 30 [2022-12-13 19:29:35,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723146061] [2022-12-13 19:29:35,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:35,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:29:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:35,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:29:35,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:29:35,555 INFO L87 Difference]: Start difference. First operand 30461 states and 39314 transitions. Second operand has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-13 19:29:46,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:46,217 INFO L93 Difference]: Finished difference Result 75816 states and 97909 transitions. [2022-12-13 19:29:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:29:46,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 388 [2022-12-13 19:29:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:46,298 INFO L225 Difference]: With dead ends: 75816 [2022-12-13 19:29:46,298 INFO L226 Difference]: Without dead ends: 45732 [2022-12-13 19:29:46,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 813 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 19:29:46,336 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 4757 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 3214 mSolverCounterSat, 1691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 4905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1691 IncrementalHoareTripleChecker+Valid, 3214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:46,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 3388 Invalid, 4905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1691 Valid, 3214 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 19:29:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45732 states. [2022-12-13 19:29:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45732 to 45094. [2022-12-13 19:29:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45094 states, 35498 states have (on average 1.2670291284016) internal successors, (44977), 36222 states have internal predecessors, (44977), 6305 states have call successors, (6305), 3136 states have call predecessors, (6305), 3290 states have return successors, (6905), 6343 states have call predecessors, (6905), 6304 states have call successors, (6905) [2022-12-13 19:29:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45094 states to 45094 states and 58187 transitions. [2022-12-13 19:29:52,991 INFO L78 Accepts]: Start accepts. Automaton has 45094 states and 58187 transitions. Word has length 388 [2022-12-13 19:29:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:52,992 INFO L495 AbstractCegarLoop]: Abstraction has 45094 states and 58187 transitions. [2022-12-13 19:29:52,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-13 19:29:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 45094 states and 58187 transitions. [2022-12-13 19:29:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-12-13 19:29:53,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:53,017 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:53,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 19:29:53,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 19:29:53,219 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:53,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2070623624, now seen corresponding path program 1 times [2022-12-13 19:29:53,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:53,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570194960] [2022-12-13 19:29:53,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:53,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:29:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:29:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:29:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:29:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:29:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:29:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:29:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:29:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:29:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:29:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:29:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:29:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:29:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:29:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:29:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:29:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-12-13 19:29:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-12-13 19:29:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-12-13 19:29:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-12-13 19:29:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-12-13 19:29:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:54,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:29:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:29:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:29:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-12-13 19:29:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-12-13 19:29:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-12-13 19:29:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:29:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 4494 trivial. 0 not checked. [2022-12-13 19:29:55,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:55,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570194960] [2022-12-13 19:29:55,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570194960] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:29:55,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782018232] [2022-12-13 19:29:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:55,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:29:55,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:29:55,085 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:29:55,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 19:29:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:55,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 19:29:55,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:29:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 4473 trivial. 0 not checked. [2022-12-13 19:29:55,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:29:55,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782018232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:55,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:29:55,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2022-12-13 19:29:55,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841995879] [2022-12-13 19:29:55,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:55,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:29:55,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:29:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:29:55,844 INFO L87 Difference]: Start difference. First operand 45094 states and 58187 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 4 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2022-12-13 19:30:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:30:06,805 INFO L93 Difference]: Finished difference Result 117106 states and 153217 transitions. [2022-12-13 19:30:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:30:06,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 4 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 428 [2022-12-13 19:30:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:30:06,939 INFO L225 Difference]: With dead ends: 117106 [2022-12-13 19:30:06,939 INFO L226 Difference]: Without dead ends: 72394 [2022-12-13 19:30:06,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:30:06,993 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 1532 mSDsluCounter, 7007 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 8680 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:30:06,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 8680 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:30:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72394 states. [2022-12-13 19:30:14,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72394 to 45034. [2022-12-13 19:30:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45034 states, 35468 states have (on average 1.2672549904138941) internal successors, (44947), 36192 states have internal predecessors, (44947), 6275 states have call successors, (6275), 3136 states have call predecessors, (6275), 3290 states have return successors, (6875), 6313 states have call predecessors, (6875), 6274 states have call successors, (6875) [2022-12-13 19:30:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45034 states to 45034 states and 58097 transitions. [2022-12-13 19:30:14,350 INFO L78 Accepts]: Start accepts. Automaton has 45034 states and 58097 transitions. Word has length 428 [2022-12-13 19:30:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:30:14,351 INFO L495 AbstractCegarLoop]: Abstraction has 45034 states and 58097 transitions. [2022-12-13 19:30:14,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 4 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2022-12-13 19:30:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 45034 states and 58097 transitions. [2022-12-13 19:30:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-12-13 19:30:14,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:30:14,379 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:14,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 19:30:14,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 19:30:14,581 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:30:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash 503017023, now seen corresponding path program 1 times [2022-12-13 19:30:14,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:14,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162961217] [2022-12-13 19:30:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:14,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:30:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:30:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:30:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:30:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:30:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:30:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:30:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:30:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:30:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:30:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:30:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:30:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:30:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:30:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:30:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:30:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:30:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:30:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-12-13 19:30:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-12-13 19:30:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 19:30:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-12-13 19:30:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-12-13 19:30:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:30:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-12-13 19:30:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:30:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:30:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-12-13 19:30:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-12-13 19:30:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-12-13 19:30:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 4494 trivial. 0 not checked. [2022-12-13 19:30:16,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:16,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162961217] [2022-12-13 19:30:16,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162961217] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:30:16,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707963915] [2022-12-13 19:30:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:16,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:30:16,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:30:16,726 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:30:16,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 19:30:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:21,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-13 19:30:21,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:30:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 4473 trivial. 0 not checked. [2022-12-13 19:30:21,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:30:21,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707963915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:21,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:30:21,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 21 [2022-12-13 19:30:21,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475551690] [2022-12-13 19:30:21,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:21,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:30:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:30:21,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:30:21,260 INFO L87 Difference]: Start difference. First operand 45034 states and 58097 transitions. Second operand has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 11 states have internal predecessors, (171), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 6 states have call predecessors, (34), 4 states have call successors, (34) [2022-12-13 19:30:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:30:38,621 INFO L93 Difference]: Finished difference Result 120853 states and 158790 transitions. [2022-12-13 19:30:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 19:30:38,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 11 states have internal predecessors, (171), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 6 states have call predecessors, (34), 4 states have call successors, (34) Word has length 437 [2022-12-13 19:30:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:30:38,765 INFO L225 Difference]: With dead ends: 120853 [2022-12-13 19:30:38,765 INFO L226 Difference]: Without dead ends: 76201 [2022-12-13 19:30:38,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 495 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 19:30:38,818 INFO L413 NwaCegarLoop]: 2004 mSDtfsCounter, 2151 mSDsluCounter, 20634 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 22638 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:30:38,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2204 Valid, 22638 Invalid, 1771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [297 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 19:30:38,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76201 states. [2022-12-13 19:30:48,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76201 to 45014. [2022-12-13 19:30:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45014 states, 35468 states have (on average 1.2666911018382767) internal successors, (44927), 36172 states have internal predecessors, (44927), 6255 states have call successors, (6255), 3136 states have call predecessors, (6255), 3290 states have return successors, (6855), 6293 states have call predecessors, (6855), 6254 states have call successors, (6855) [2022-12-13 19:30:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45014 states to 45014 states and 58037 transitions. [2022-12-13 19:30:48,504 INFO L78 Accepts]: Start accepts. Automaton has 45014 states and 58037 transitions. Word has length 437 [2022-12-13 19:30:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:30:48,504 INFO L495 AbstractCegarLoop]: Abstraction has 45014 states and 58037 transitions. [2022-12-13 19:30:48,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 11 states have internal predecessors, (171), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 6 states have call predecessors, (34), 4 states have call successors, (34) [2022-12-13 19:30:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 45014 states and 58037 transitions. [2022-12-13 19:30:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-12-13 19:30:48,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:30:48,538 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:48,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 19:30:48,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 19:30:48,740 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:30:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash 699160593, now seen corresponding path program 1 times [2022-12-13 19:30:48,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:48,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952240906] [2022-12-13 19:30:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:30:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:30:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:30:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:30:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:30:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:30:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:30:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:30:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:30:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:30:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:30:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:30:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:30:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:30:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:30:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:30:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:30:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:30:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-12-13 19:30:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-12-13 19:30:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 19:30:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-12-13 19:30:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-12-13 19:30:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:30:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-12-13 19:30:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:30:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:30:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-12-13 19:30:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-12-13 19:30:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-12-13 19:30:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-12-13 19:30:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-12-13 19:30:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:30:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 4504 trivial. 0 not checked. [2022-12-13 19:30:51,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952240906] [2022-12-13 19:30:51,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952240906] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:30:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423708507] [2022-12-13 19:30:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:51,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:30:51,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:30:51,400 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:30:51,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 19:30:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:56,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 3634 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-13 19:30:56,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:30:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 4476 trivial. 0 not checked. [2022-12-13 19:30:56,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:30:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-12-13 19:30:57,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423708507] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:30:57,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:30:57,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20, 16] total 33 [2022-12-13 19:30:57,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307750525] [2022-12-13 19:30:57,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:57,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:30:57,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:30:57,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 19:30:57,490 INFO L87 Difference]: Start difference. First operand 45014 states and 58037 transitions. Second operand has 11 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2022-12-13 19:31:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:31:17,534 INFO L93 Difference]: Finished difference Result 119481 states and 154107 transitions. [2022-12-13 19:31:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:31:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 456 [2022-12-13 19:31:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:31:17,676 INFO L225 Difference]: With dead ends: 119481 [2022-12-13 19:31:17,676 INFO L226 Difference]: Without dead ends: 74844 [2022-12-13 19:31:17,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 959 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 19:31:17,731 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 1825 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 3671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:31:17,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 3324 Invalid, 3671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3255 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 19:31:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74844 states. [2022-12-13 19:31:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74844 to 44994. [2022-12-13 19:31:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44994 states, 35448 states have (on average 1.2668415707515233) internal successors, (44907), 36162 states have internal predecessors, (44907), 6255 states have call successors, (6255), 3136 states have call predecessors, (6255), 3290 states have return successors, (6855), 6283 states have call predecessors, (6855), 6254 states have call successors, (6855) [2022-12-13 19:31:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44994 states to 44994 states and 58017 transitions. [2022-12-13 19:31:28,083 INFO L78 Accepts]: Start accepts. Automaton has 44994 states and 58017 transitions. Word has length 456 [2022-12-13 19:31:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:31:28,083 INFO L495 AbstractCegarLoop]: Abstraction has 44994 states and 58017 transitions. [2022-12-13 19:31:28,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2022-12-13 19:31:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 44994 states and 58017 transitions. [2022-12-13 19:31:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-12-13 19:31:28,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:31:28,131 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:28,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 19:31:28,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:31:28,333 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:31:28,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1442826317, now seen corresponding path program 1 times [2022-12-13 19:31:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:28,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309758368] [2022-12-13 19:31:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:28,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:31:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:31:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:31:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:31:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:31:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:31:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:31:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:31:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:31:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:31:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:31:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:31:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:31:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:31:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:31:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:31:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:31:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:31:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:31:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:31:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-12-13 19:31:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-12-13 19:31:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 19:31:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-12-13 19:31:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-12-13 19:31:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:31:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-12-13 19:31:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:31:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:31:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:31:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-12-13 19:31:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:31:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-12-13 19:31:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-12-13 19:31:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-12-13 19:31:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-12-13 19:31:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:31:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-12-13 19:31:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-12-13 19:31:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-12-13 19:31:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:31:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:28,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2022-12-13 19:31:28,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:28,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309758368] [2022-12-13 19:31:28,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309758368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:28,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:28,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 19:31:28,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879871140] [2022-12-13 19:31:28,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:28,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:31:28,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:31:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:31:28,834 INFO L87 Difference]: Start difference. First operand 44994 states and 58017 transitions. Second operand has 10 states, 10 states have (on average 19.4) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (40), 9 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-13 19:31:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:31:49,810 INFO L93 Difference]: Finished difference Result 124631 states and 169986 transitions. [2022-12-13 19:31:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:31:49,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (40), 9 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 495 [2022-12-13 19:31:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:31:49,994 INFO L225 Difference]: With dead ends: 124631 [2022-12-13 19:31:49,994 INFO L226 Difference]: Without dead ends: 80019 [2022-12-13 19:31:50,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:31:50,055 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 1633 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:31:50,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 2950 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [802 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 19:31:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80019 states. [2022-12-13 19:32:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80019 to 45024. [2022-12-13 19:32:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45024 states, 35478 states have (on average 1.2666159309994927) internal successors, (44937), 36192 states have internal predecessors, (44937), 6255 states have call successors, (6255), 3136 states have call predecessors, (6255), 3290 states have return successors, (6855), 6283 states have call predecessors, (6855), 6254 states have call successors, (6855) [2022-12-13 19:32:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45024 states to 45024 states and 58047 transitions. [2022-12-13 19:32:01,144 INFO L78 Accepts]: Start accepts. Automaton has 45024 states and 58047 transitions. Word has length 495 [2022-12-13 19:32:01,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:32:01,144 INFO L495 AbstractCegarLoop]: Abstraction has 45024 states and 58047 transitions. [2022-12-13 19:32:01,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (40), 9 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-13 19:32:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 45024 states and 58047 transitions. [2022-12-13 19:32:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2022-12-13 19:32:01,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:32:01,193 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:01,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 19:32:01,193 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:32:01,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1087808788, now seen corresponding path program 1 times [2022-12-13 19:32:01,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:01,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117682842] [2022-12-13 19:32:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:01,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:32:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:32:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:32:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:32:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:32:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:32:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:32:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:32:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:32:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:32:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:32:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:32:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:32:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:32:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:32:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:32:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:32:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:32:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-12-13 19:32:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-12-13 19:32:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 19:32:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-12-13 19:32:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-12-13 19:32:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:32:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-12-13 19:32:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:32:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:32:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-12-13 19:32:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-12-13 19:32:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-12-13 19:32:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-12-13 19:32:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-12-13 19:32:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-12-13 19:32:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-12-13 19:32:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-12-13 19:32:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2022-12-13 19:32:02,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:02,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117682842] [2022-12-13 19:32:02,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117682842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:02,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:32:02,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 19:32:02,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54572303] [2022-12-13 19:32:02,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:32:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:32:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:32:02,267 INFO L87 Difference]: Start difference. First operand 45024 states and 58047 transitions. Second operand has 15 states, 15 states have (on average 13.066666666666666) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (40), 9 states have call predecessors, (40), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-13 19:32:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:32:33,438 INFO L93 Difference]: Finished difference Result 144323 states and 197970 transitions. [2022-12-13 19:32:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 19:32:33,439 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.066666666666666) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (40), 9 states have call predecessors, (40), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 497 [2022-12-13 19:32:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:32:33,667 INFO L225 Difference]: With dead ends: 144323 [2022-12-13 19:32:33,667 INFO L226 Difference]: Without dead ends: 99681 [2022-12-13 19:32:33,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:32:33,729 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 2468 mSDsluCounter, 6886 mSDsCounter, 0 mSdLazyCounter, 6747 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 7916 SdHoareTripleChecker+Invalid, 7764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 6747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:32:33,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 7916 Invalid, 7764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1017 Valid, 6747 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 19:32:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99681 states. [2022-12-13 19:32:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99681 to 45204. [2022-12-13 19:32:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45204 states, 35628 states have (on average 1.265493432132031) internal successors, (45087), 36342 states have internal predecessors, (45087), 6255 states have call successors, (6255), 3136 states have call predecessors, (6255), 3320 states have return successors, (6915), 6313 states have call predecessors, (6915), 6254 states have call successors, (6915) [2022-12-13 19:32:45,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45204 states to 45204 states and 58257 transitions. [2022-12-13 19:32:45,549 INFO L78 Accepts]: Start accepts. Automaton has 45204 states and 58257 transitions. Word has length 497 [2022-12-13 19:32:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:32:45,549 INFO L495 AbstractCegarLoop]: Abstraction has 45204 states and 58257 transitions. [2022-12-13 19:32:45,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.066666666666666) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (40), 9 states have call predecessors, (40), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2022-12-13 19:32:45,549 INFO L276 IsEmpty]: Start isEmpty. Operand 45204 states and 58257 transitions. [2022-12-13 19:32:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-12-13 19:32:45,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:32:45,598 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 19:32:45,598 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:32:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:45,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1401048810, now seen corresponding path program 1 times [2022-12-13 19:32:45,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:45,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711550563] [2022-12-13 19:32:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:32:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:32:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:32:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:32:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:32:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:32:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:32:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:32:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:32:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:32:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:32:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:32:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:32:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:32:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:32:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:32:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:32:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:32:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-12-13 19:32:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-12-13 19:32:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 19:32:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-12-13 19:32:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-12-13 19:32:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:32:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-12-13 19:32:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:32:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:32:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-12-13 19:32:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-12-13 19:32:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-12-13 19:32:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-12-13 19:32:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-12-13 19:32:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-12-13 19:32:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-12-13 19:32:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-12-13 19:32:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:32:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-12-13 19:32:46,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:46,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711550563] [2022-12-13 19:32:46,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711550563] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:32:46,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318162837] [2022-12-13 19:32:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:46,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:32:46,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:32:46,825 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:32:46,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 19:32:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:48,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 4118 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 19:32:48,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:32:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 4484 trivial. 0 not checked. [2022-12-13 19:32:48,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:32:48,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318162837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:48,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:32:48,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 14 [2022-12-13 19:32:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665689455] [2022-12-13 19:32:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:48,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:32:48,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:32:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:32:48,500 INFO L87 Difference]: Start difference. First operand 45204 states and 58257 transitions. Second operand has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-13 19:33:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:03,715 INFO L93 Difference]: Finished difference Result 102635 states and 133431 transitions. [2022-12-13 19:33:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:33:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) Word has length 498 [2022-12-13 19:33:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:03,829 INFO L225 Difference]: With dead ends: 102635 [2022-12-13 19:33:03,829 INFO L226 Difference]: Without dead ends: 57813 [2022-12-13 19:33:03,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 573 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:33:03,884 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 234 mSDsluCounter, 5819 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 7043 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:03,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 7043 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:33:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57813 states. [2022-12-13 19:33:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57813 to 45354. [2022-12-13 19:33:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45354 states, 35748 states have (on average 1.26460221550856) internal successors, (45207), 36432 states have internal predecessors, (45207), 6255 states have call successors, (6255), 3136 states have call predecessors, (6255), 3350 states have return successors, (6945), 6373 states have call predecessors, (6945), 6254 states have call successors, (6945) [2022-12-13 19:33:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45354 states to 45354 states and 58407 transitions. [2022-12-13 19:33:15,463 INFO L78 Accepts]: Start accepts. Automaton has 45354 states and 58407 transitions. Word has length 498 [2022-12-13 19:33:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:15,463 INFO L495 AbstractCegarLoop]: Abstraction has 45354 states and 58407 transitions. [2022-12-13 19:33:15,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) [2022-12-13 19:33:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 45354 states and 58407 transitions. [2022-12-13 19:33:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-12-13 19:33:15,513 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:15,513 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:15,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 19:33:15,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 19:33:15,716 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:15,717 INFO L85 PathProgramCache]: Analyzing trace with hash 143705084, now seen corresponding path program 2 times [2022-12-13 19:33:15,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:15,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378782945] [2022-12-13 19:33:15,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:15,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:33:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:33:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:33:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:33:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:33:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:33:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:33:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:33:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:33:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:33:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:33:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:33:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:33:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:33:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:33:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:33:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:33:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:33:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-12-13 19:33:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-12-13 19:33:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 19:33:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-12-13 19:33:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-12-13 19:33:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:33:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-12-13 19:33:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:33:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:33:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-12-13 19:33:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:33:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-12-13 19:33:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-12-13 19:33:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-12-13 19:33:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-12-13 19:33:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-12-13 19:33:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-12-13 19:33:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-12-13 19:33:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:33:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 4520 trivial. 0 not checked. [2022-12-13 19:33:18,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:18,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378782945] [2022-12-13 19:33:18,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378782945] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:33:18,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398094934] [2022-12-13 19:33:18,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:33:18,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:33:18,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:33:18,921 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:33:18,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 19:33:29,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:33:29,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:33:29,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 4144 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 19:33:29,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:33:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 130 proven. 4 refuted. 0 times theorem prover too weak. 4476 trivial. 0 not checked. [2022-12-13 19:33:30,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:33:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4530 trivial. 0 not checked. [2022-12-13 19:33:30,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398094934] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:33:30,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:33:30,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21, 14] total 30 [2022-12-13 19:33:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394856255] [2022-12-13 19:33:30,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:30,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:33:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:33:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:33:30,820 INFO L87 Difference]: Start difference. First operand 45354 states and 58407 transitions. Second operand has 9 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 5 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2022-12-13 19:33:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:47,230 INFO L93 Difference]: Finished difference Result 102193 states and 132619 transitions. [2022-12-13 19:33:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:33:47,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 5 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) Word has length 504 [2022-12-13 19:33:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:47,342 INFO L225 Difference]: With dead ends: 102193 [2022-12-13 19:33:47,342 INFO L226 Difference]: Without dead ends: 57221 [2022-12-13 19:33:47,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1068 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2022-12-13 19:33:47,402 INFO L413 NwaCegarLoop]: 1252 mSDtfsCounter, 742 mSDsluCounter, 6141 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 7393 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:47,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 7393 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 19:33:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57221 states. [2022-12-13 19:33:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57221 to 45444. [2022-12-13 19:33:59,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45444 states, 35808 states have (on average 1.2641588471849865) internal successors, (45267), 36522 states have internal predecessors, (45267), 6255 states have call successors, (6255), 3136 states have call predecessors, (6255), 3380 states have return successors, (6975), 6373 states have call predecessors, (6975), 6254 states have call successors, (6975) [2022-12-13 19:33:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45444 states to 45444 states and 58497 transitions. [2022-12-13 19:33:59,431 INFO L78 Accepts]: Start accepts. Automaton has 45444 states and 58497 transitions. Word has length 504 [2022-12-13 19:33:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:59,432 INFO L495 AbstractCegarLoop]: Abstraction has 45444 states and 58497 transitions. [2022-12-13 19:33:59,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 5 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2022-12-13 19:33:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 45444 states and 58497 transitions. [2022-12-13 19:33:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-12-13 19:33:59,481 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:59,482 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:59,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-13 19:33:59,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:33:59,684 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:33:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash -482559258, now seen corresponding path program 1 times [2022-12-13 19:33:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:59,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066375329] [2022-12-13 19:33:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:59,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:34:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:34:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:34:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:34:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:34:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:34:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:34:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:34:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:34:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:34:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:34:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:34:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:34:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:34:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:34:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:34:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:34:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:34:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-12-13 19:34:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-12-13 19:34:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 19:34:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-12-13 19:34:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-12-13 19:34:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:34:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-12-13 19:34:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:34:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:34:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-12-13 19:34:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:34:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-12-13 19:34:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-12-13 19:34:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-12-13 19:34:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-12-13 19:34:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-12-13 19:34:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-12-13 19:34:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-12-13 19:34:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:34:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4530 trivial. 0 not checked. [2022-12-13 19:34:00,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:00,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066375329] [2022-12-13 19:34:00,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066375329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:00,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:00,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 19:34:00,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578553042] [2022-12-13 19:34:00,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:00,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:34:00,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:00,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:34:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:34:00,643 INFO L87 Difference]: Start difference. First operand 45444 states and 58497 transitions. Second operand has 14 states, 14 states have (on average 14.214285714285714) internal successors, (199), 7 states have internal predecessors, (199), 5 states have call successors, (40), 9 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2022-12-13 19:34:48,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:48,697 INFO L93 Difference]: Finished difference Result 211127 states and 297772 transitions. [2022-12-13 19:34:48,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 19:34:48,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.214285714285714) internal successors, (199), 7 states have internal predecessors, (199), 5 states have call successors, (40), 9 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) Word has length 506 [2022-12-13 19:34:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:49,149 INFO L225 Difference]: With dead ends: 211127 [2022-12-13 19:34:49,149 INFO L226 Difference]: Without dead ends: 166065 [2022-12-13 19:34:49,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=429, Invalid=1827, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 19:34:49,255 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 6530 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 8626 mSolverCounterSat, 4056 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6665 SdHoareTripleChecker+Valid, 5897 SdHoareTripleChecker+Invalid, 12682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4056 IncrementalHoareTripleChecker+Valid, 8626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:49,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6665 Valid, 5897 Invalid, 12682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4056 Valid, 8626 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 19:34:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166065 states. [2022-12-13 19:35:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166065 to 126115. [2022-12-13 19:35:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126115 states, 98523 states have (on average 1.2637962709215107) internal successors, (124513), 100496 states have internal predecessors, (124513), 17039 states have call successors, (17039), 8690 states have call predecessors, (17039), 10552 states have return successors, (22260), 18610 states have call predecessors, (22260), 17038 states have call successors, (22260) [2022-12-13 19:35:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126115 states to 126115 states and 163812 transitions. [2022-12-13 19:35:24,027 INFO L78 Accepts]: Start accepts. Automaton has 126115 states and 163812 transitions. Word has length 506 [2022-12-13 19:35:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:35:24,027 INFO L495 AbstractCegarLoop]: Abstraction has 126115 states and 163812 transitions. [2022-12-13 19:35:24,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.214285714285714) internal successors, (199), 7 states have internal predecessors, (199), 5 states have call successors, (40), 9 states have call predecessors, (40), 3 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2022-12-13 19:35:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 126115 states and 163812 transitions. [2022-12-13 19:35:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-12-13 19:35:24,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:35:24,170 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:35:24,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 19:35:24,170 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:35:24,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1539290460, now seen corresponding path program 1 times [2022-12-13 19:35:24,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:24,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632886776] [2022-12-13 19:35:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:24,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:35:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:35:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:35:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 19:35:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:35:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 19:35:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 19:35:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 19:35:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:35:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:35:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 19:35:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:35:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:35:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:35:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:35:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:35:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-12-13 19:35:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:35:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-12-13 19:35:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-12-13 19:35:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-12-13 19:35:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-12-13 19:35:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-12-13 19:35:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-12-13 19:35:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-12-13 19:35:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:35:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:35:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-12-13 19:35:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:35:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-12-13 19:35:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-12-13 19:35:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-12-13 19:35:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-12-13 19:35:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-12-13 19:35:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-12-13 19:35:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-12-13 19:35:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:35:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 4520 trivial. 0 not checked. [2022-12-13 19:35:27,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:27,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632886776] [2022-12-13 19:35:27,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632886776] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:35:27,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837332442] [2022-12-13 19:35:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:27,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:35:27,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:35:27,221 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:35:27,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 19:35:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:40,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 4142 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-13 19:35:40,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:35:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 68 proven. 111 refuted. 0 times theorem prover too weak. 4431 trivial. 0 not checked. [2022-12-13 19:35:41,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:35:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4530 trivial. 0 not checked. [2022-12-13 19:35:42,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837332442] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:35:42,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:35:42,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20, 19] total 36 [2022-12-13 19:35:42,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764426855] [2022-12-13 19:35:42,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:42,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:35:42,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:42,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:35:42,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 19:35:42,516 INFO L87 Difference]: Start difference. First operand 126115 states and 163812 transitions. Second operand has 11 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 5 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-12-13 19:36:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:36:41,333 INFO L93 Difference]: Finished difference Result 320540 states and 416321 transitions. [2022-12-13 19:36:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:36:41,334 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 5 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 506 [2022-12-13 19:36:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:36:41,340 INFO L225 Difference]: With dead ends: 320540 [2022-12-13 19:36:41,340 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 19:36:41,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1065 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 19:36:41,651 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 4204 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 1436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4250 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 5184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1436 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:36:41,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4250 Valid, 3574 Invalid, 5184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1436 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 19:36:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 19:36:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 19:36:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:36:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 19:36:41,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 506 [2022-12-13 19:36:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:36:41,668 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:36:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 5 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-12-13 19:36:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 19:36:41,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 19:36:41,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 19:36:41,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-13 19:36:41,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223657f7-e58e-4764-9ba6-4277cfb17be2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 19:36:41,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.