./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--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R --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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:22:54,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:22:54,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:22:54,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:22:54,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:22:54,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:22:54,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:22:54,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:22:54,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:22:54,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:22:54,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:22:54,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:22:54,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:22:54,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:22:54,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:22:54,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:22:54,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:22:54,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:22:54,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:22:54,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:22:54,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:22:54,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:22:54,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:22:54,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:22:54,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:22:54,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:22:54,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:22:54,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:22:54,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:22:54,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:22:54,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:22:54,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:22:54,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:22:54,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:22:54,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:22:54,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:22:54,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:22:54,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:22:54,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:22:54,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:22:54,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:22:54,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-25 18:22:54,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:22:54,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:22:54,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:22:54,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:22:54,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:22:54,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:22:54,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:22:54,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:22:54,755 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:22:54,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:22:54,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:22:54,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:22:54,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:22:54,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:22:54,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:22:54,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:22:54,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:22:54,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:22:54,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:22:54,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:22:54,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:22:54,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:54,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:22:54,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:22:54,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:22:54,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:22:54,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:22:54,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:22:54,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:22:54,763 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:22:54,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:22:54,763 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_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2022-11-25 18:22:55,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:22:55,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:22:55,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:22:55,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:22:55,069 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:22:55,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-25 18:22:58,159 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:22:58,783 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:22:58,783 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-25 18:22:58,824 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/data/7a57f4e44/ed6091c65c63418c83204ede068cdcc3/FLAG5d4aaa2a0 [2022-11-25 18:22:58,840 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/data/7a57f4e44/ed6091c65c63418c83204ede068cdcc3 [2022-11-25 18:22:58,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:22:58,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:22:58,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:58,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:22:58,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:22:58,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:58" (1/1) ... [2022-11-25 18:22:58,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435e39b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:58, skipping insertion in model container [2022-11-25 18:22:58,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:58" (1/1) ... [2022-11-25 18:22:58,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:22:58,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:59,648 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 18:22:59,653 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 18:22:59,671 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 18:22:59,676 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 18:22:59,866 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:22:59,922 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_5e265b0e-1373-4562-9e33-f9cfacd870d7/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-25 18:22:59,996 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-25 18:23:00,100 WARN L623 FunctionHandler]: Unknown extern function lbs_host_to_card_done [2022-11-25 18:23:00,101 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,104 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,112 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,112 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,114 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 18:23:00,116 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,126 WARN L623 FunctionHandler]: Unknown extern function __lbs_cmd [2022-11-25 18:23:00,127 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,129 WARN L623 FunctionHandler]: Unknown extern function lbs_host_sleep_cfg [2022-11-25 18:23:00,131 WARN L623 FunctionHandler]: Unknown extern function __lbs_cmd [2022-11-25 18:23:00,132 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:23:00,133 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,136 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:23:00,150 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,152 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,153 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 18:23:00,160 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-11-25 18:23:00,164 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,175 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,177 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,180 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,182 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,184 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,186 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,188 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,190 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,192 WARN L623 FunctionHandler]: Unknown extern function lbs_add_card [2022-11-25 18:23:00,194 WARN L623 FunctionHandler]: Unknown extern function lbs_get_firmware_async [2022-11-25 18:23:00,195 WARN L623 FunctionHandler]: Unknown extern function lbs_remove_card [2022-11-25 18:23:00,200 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,201 WARN L623 FunctionHandler]: Unknown extern function lbs_stop_card [2022-11-25 18:23:00,202 WARN L623 FunctionHandler]: Unknown extern function lbs_remove_card [2022-11-25 18:23:00,202 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,212 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,214 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:23:00,214 WARN L623 FunctionHandler]: Unknown extern function usb_reset_device [2022-11-25 18:23:00,215 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:23:00,215 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,217 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,220 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,225 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,228 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,229 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,237 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,240 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,241 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,242 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 18:23:00,242 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,245 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,248 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,256 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,258 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,259 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,261 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,264 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,265 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,269 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,269 WARN L623 FunctionHandler]: Unknown extern function kmemdup [2022-11-25 18:23:00,274 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,278 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,283 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,284 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,285 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 18:23:00,289 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,299 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,299 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 18:23:00,299 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-11-25 18:23:00,300 WARN L623 FunctionHandler]: Unknown extern function lbs_process_rxed_packet [2022-11-25 18:23:00,306 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,307 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,309 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,310 WARN L623 FunctionHandler]: Unknown extern function lbs_notify_command_response [2022-11-25 18:23:00,310 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,313 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,314 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,315 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,316 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,320 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,326 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,329 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,329 WARN L623 FunctionHandler]: Unknown extern function lbs_send_tx_feedback [2022-11-25 18:23:00,330 WARN L623 FunctionHandler]: Unknown extern function lbs_queue_event [2022-11-25 18:23:00,331 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,333 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,335 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,339 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,341 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,352 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,353 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,355 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,356 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,357 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,357 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,358 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,360 WARN L623 FunctionHandler]: Unknown extern function msleep_interruptible [2022-11-25 18:23:00,360 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,361 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,363 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait [2022-11-25 18:23:00,364 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-11-25 18:23:00,364 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-11-25 18:23:00,365 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,365 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,366 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,366 WARN L623 FunctionHandler]: Unknown extern function lbs_start_card [2022-11-25 18:23:00,367 WARN L623 FunctionHandler]: Unknown extern function lbs_host_sleep_cfg [2022-11-25 18:23:00,368 WARN L623 FunctionHandler]: Unknown extern function release_firmware [2022-11-25 18:23:00,368 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,373 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,375 WARN L623 FunctionHandler]: Unknown extern function lbs_suspend [2022-11-25 18:23:00,375 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,375 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,376 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,380 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,382 WARN L623 FunctionHandler]: Unknown extern function lbs_resume [2022-11-25 18:23:00,382 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,420 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 18:23:00,426 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 18:23:00,436 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 18:23:00,437 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 18:23:00,438 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-25 18:23:00,438 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-25 18:23:00,446 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,460 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,481 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,482 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,484 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,485 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,491 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:23:00,528 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:23:00,743 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 18:23:00,744 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-11-25 18:23:00,748 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_lock [2022-11-25 18:23:00,749 WARN L623 FunctionHandler]: Unknown extern function _raw_spin_unlock [2022-11-25 18:23:00,755 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,758 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_5e265b0e-1373-4562-9e33-f9cfacd870d7/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-25 18:23:00,761 WARN L623 FunctionHandler]: Unknown extern function __netdev_alloc_skb [2022-11-25 18:23:00,769 WARN L623 FunctionHandler]: Unknown extern function lbs_host_to_card_done [2022-11-25 18:23:00,770 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,770 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,772 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,772 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,773 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 18:23:00,774 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,781 WARN L623 FunctionHandler]: Unknown extern function __lbs_cmd [2022-11-25 18:23:00,786 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,797 WARN L623 FunctionHandler]: Unknown extern function lbs_host_sleep_cfg [2022-11-25 18:23:00,798 WARN L623 FunctionHandler]: Unknown extern function __lbs_cmd [2022-11-25 18:23:00,798 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:23:00,799 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,800 WARN L623 FunctionHandler]: Unknown extern function netdev_info [2022-11-25 18:23:00,801 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,802 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,802 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 18:23:00,804 WARN L623 FunctionHandler]: Unknown extern function __init_waitqueue_head [2022-11-25 18:23:00,804 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,806 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,807 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,809 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,810 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,811 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,812 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,818 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,819 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,820 WARN L623 FunctionHandler]: Unknown extern function lbs_add_card [2022-11-25 18:23:00,847 WARN L623 FunctionHandler]: Unknown extern function lbs_get_firmware_async [2022-11-25 18:23:00,847 WARN L623 FunctionHandler]: Unknown extern function lbs_remove_card [2022-11-25 18:23:00,850 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,854 WARN L623 FunctionHandler]: Unknown extern function lbs_stop_card [2022-11-25 18:23:00,855 WARN L623 FunctionHandler]: Unknown extern function lbs_remove_card [2022-11-25 18:23:00,855 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,863 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,864 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:23:00,864 WARN L623 FunctionHandler]: Unknown extern function usb_reset_device [2022-11-25 18:23:00,864 WARN L623 FunctionHandler]: Unknown extern function msleep [2022-11-25 18:23:00,864 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,867 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,870 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,874 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,876 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,881 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,883 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,884 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,884 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,885 WARN L623 FunctionHandler]: Unknown extern function __wake_up [2022-11-25 18:23:00,885 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,886 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,887 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,887 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,901 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,901 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,902 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,902 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,903 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,904 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,904 WARN L623 FunctionHandler]: Unknown extern function kmemdup [2022-11-25 18:23:00,905 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,905 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,906 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,906 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,907 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-25 18:23:00,908 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,909 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,909 WARN L623 FunctionHandler]: Unknown extern function skb_put [2022-11-25 18:23:00,909 WARN L623 FunctionHandler]: Unknown extern function skb_pull [2022-11-25 18:23:00,909 WARN L623 FunctionHandler]: Unknown extern function lbs_process_rxed_packet [2022-11-25 18:23:00,910 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,911 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,912 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,912 WARN L623 FunctionHandler]: Unknown extern function lbs_notify_command_response [2022-11-25 18:23:00,913 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,916 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,917 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,918 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,919 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,920 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,921 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,922 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,923 WARN L623 FunctionHandler]: Unknown extern function lbs_send_tx_feedback [2022-11-25 18:23:00,923 WARN L623 FunctionHandler]: Unknown extern function lbs_queue_event [2022-11-25 18:23:00,924 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,924 WARN L623 FunctionHandler]: Unknown extern function kfree_skb [2022-11-25 18:23:00,925 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,926 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,929 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,932 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,933 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,934 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,935 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,936 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,936 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,937 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,938 WARN L623 FunctionHandler]: Unknown extern function msleep_interruptible [2022-11-25 18:23:00,939 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,939 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,941 WARN L623 FunctionHandler]: Unknown extern function prepare_to_wait [2022-11-25 18:23:00,942 WARN L623 FunctionHandler]: Unknown extern function schedule [2022-11-25 18:23:00,942 WARN L623 FunctionHandler]: Unknown extern function finish_wait [2022-11-25 18:23:00,943 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,944 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,944 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,945 WARN L623 FunctionHandler]: Unknown extern function lbs_start_card [2022-11-25 18:23:00,946 WARN L623 FunctionHandler]: Unknown extern function lbs_host_sleep_cfg [2022-11-25 18:23:00,946 WARN L623 FunctionHandler]: Unknown extern function release_firmware [2022-11-25 18:23:00,947 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,949 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,950 WARN L623 FunctionHandler]: Unknown extern function lbs_suspend [2022-11-25 18:23:00,951 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,951 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 18:23:00,951 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,952 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,953 WARN L623 FunctionHandler]: Unknown extern function lbs_resume [2022-11-25 18:23:00,953 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 18:23:00,962 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-25 18:23:00,965 WARN L623 FunctionHandler]: Unknown extern function del_timer [2022-11-25 18:23:00,974 WARN L623 FunctionHandler]: Unknown extern function mod_timer [2022-11-25 18:23:00,975 WARN L623 FunctionHandler]: Unknown extern function del_timer_sync [2022-11-25 18:23:00,976 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-25 18:23:00,976 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-25 18:23:00,977 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,979 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,985 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,989 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,991 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:00,992 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:01,002 WARN L623 FunctionHandler]: Unknown extern function ldv_malloc [2022-11-25 18:23:01,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:23:01,048 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:23:01,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01 WrapperNode [2022-11-25 18:23:01,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:23:01,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:23:01,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:23:01,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:23:01,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,301 INFO L138 Inliner]: procedures = 174, calls = 1356, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 2485 [2022-11-25 18:23:01,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:23:01,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:23:01,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:23:01,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:23:01,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:23:01,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:23:01,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:23:01,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:23:01,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (1/1) ... [2022-11-25 18:23:01,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:23:01,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:23:01,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:23:01,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:23:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2022-11-25 18:23:01,614 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2022-11-25 18:23:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2022-11-25 18:23:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2022-11-25 18:23:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 18:23:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-25 18:23:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-25 18:23:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-11-25 18:23:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-11-25 18:23:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 18:23:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 18:23:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-25 18:23:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-25 18:23:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:23:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-25 18:23:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-25 18:23:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-25 18:23:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-25 18:23:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-25 18:23:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-25 18:23:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-25 18:23:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-25 18:23:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 18:23:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 18:23:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-25 18:23:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-25 18:23:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2022-11-25 18:23:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2022-11-25 18:23:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-25 18:23:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-25 18:23:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-25 18:23:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-25 18:23:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2022-11-25 18:23:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2022-11-25 18:23:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2022-11-25 18:23:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2022-11-25 18:23:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-25 18:23:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-25 18:23:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2022-11-25 18:23:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2022-11-25 18:23:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2022-11-25 18:23:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2022-11-25 18:23:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:23:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-25 18:23:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-25 18:23:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2022-11-25 18:23:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2022-11-25 18:23:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 18:23:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 18:23:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 18:23:01,621 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 18:23:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 18:23:01,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 18:23:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:23:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-25 18:23:01,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-25 18:23:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2022-11-25 18:23:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2022-11-25 18:23:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2022-11-25 18:23:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2022-11-25 18:23:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:23:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-25 18:23:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-25 18:23:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2022-11-25 18:23:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2022-11-25 18:23:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-25 18:23:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-25 18:23:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:23:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 18:23:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-25 18:23:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-25 18:23:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-25 18:23:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-11-25 18:23:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-11-25 18:23:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-25 18:23:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-25 18:23:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 18:23:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-11-25 18:23:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-11-25 18:23:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-25 18:23:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-25 18:23:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-25 18:23:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-25 18:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-11-25 18:23:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-11-25 18:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 18:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-25 18:23:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-25 18:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2022-11-25 18:23:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2022-11-25 18:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-25 18:23:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-25 18:23:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-25 18:23:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-25 18:23:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2022-11-25 18:23:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2022-11-25 18:23:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-25 18:23:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-25 18:23:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:23:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-25 18:23:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-25 18:23:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-25 18:23:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-25 18:23:01,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-25 18:23:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:23:01,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:23:02,316 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:23:02,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:23:02,608 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-25 18:23:03,404 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-25 18:23:04,510 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:23:04,534 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:23:04,534 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:23:04,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:04 BoogieIcfgContainer [2022-11-25 18:23:04,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:23:04,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:23:04,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:23:04,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:23:04,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:22:58" (1/3) ... [2022-11-25 18:23:04,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199584d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:04, skipping insertion in model container [2022-11-25 18:23:04,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:01" (2/3) ... [2022-11-25 18:23:04,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199584d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:04, skipping insertion in model container [2022-11-25 18:23:04,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:04" (3/3) ... [2022-11-25 18:23:04,553 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-25 18:23:04,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:23:04,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:23:04,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:23:04,670 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;@3d501c93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:23:04,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:23:04,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 527 states have (on average 1.3567362428842504) internal successors, (715), 557 states have internal predecessors, (715), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-25 18:23:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 18:23:04,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:04,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:04,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1782780063, now seen corresponding path program 1 times [2022-11-25 18:23:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:04,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714343279] [2022-11-25 18:23:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:05,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:05,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:05,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714343279] [2022-11-25 18:23:05,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714343279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:05,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:05,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:23:05,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266734436] [2022-11-25 18:23:05,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:05,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:23:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:23:05,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:23:05,422 INFO L87 Difference]: Start difference. First operand has 750 states, 527 states have (on average 1.3567362428842504) internal successors, (715), 557 states have internal predecessors, (715), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 18:23:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:09,998 INFO L93 Difference]: Finished difference Result 2529 states and 3735 transitions. [2022-11-25 18:23:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:23:10,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-25 18:23:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:10,023 INFO L225 Difference]: With dead ends: 2529 [2022-11-25 18:23:10,023 INFO L226 Difference]: Without dead ends: 1756 [2022-11-25 18:23:10,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:23:10,038 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 2158 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 1142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1142 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:10,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 2689 Invalid, 2718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1142 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:23:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-11-25 18:23:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1433. [2022-11-25 18:23:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1013 states have (on average 1.3405725567620927) internal successors, (1358), 1053 states have internal predecessors, (1358), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-25 18:23:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2025 transitions. [2022-11-25 18:23:10,225 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2025 transitions. Word has length 29 [2022-11-25 18:23:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:10,226 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 2025 transitions. [2022-11-25 18:23:10,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 18:23:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2025 transitions. [2022-11-25 18:23:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 18:23:10,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:10,230 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:23:10,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:23:10,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:10,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1459439698, now seen corresponding path program 1 times [2022-11-25 18:23:10,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:10,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129040619] [2022-11-25 18:23:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:10,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:10,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:23:10,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:10,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129040619] [2022-11-25 18:23:10,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129040619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:10,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:10,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:23:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319931022] [2022-11-25 18:23:10,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:10,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:23:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:23:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:23:10,489 INFO L87 Difference]: Start difference. First operand 1433 states and 2025 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:12,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:12,861 INFO L93 Difference]: Finished difference Result 1782 states and 2557 transitions. [2022-11-25 18:23:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:23:12,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-25 18:23:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:12,873 INFO L225 Difference]: With dead ends: 1782 [2022-11-25 18:23:12,873 INFO L226 Difference]: Without dead ends: 1769 [2022-11-25 18:23:12,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:23:12,876 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1608 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:12,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 1632 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 18:23:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-11-25 18:23:12,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1433. [2022-11-25 18:23:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1013 states have (on average 1.3395853899308983) internal successors, (1357), 1053 states have internal predecessors, (1357), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-25 18:23:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2024 transitions. [2022-11-25 18:23:12,986 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2024 transitions. Word has length 39 [2022-11-25 18:23:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:12,986 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 2024 transitions. [2022-11-25 18:23:12,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2024 transitions. [2022-11-25 18:23:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 18:23:12,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:12,989 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:23:12,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:23:12,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1516698000, now seen corresponding path program 1 times [2022-11-25 18:23:12,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:12,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491608993] [2022-11-25 18:23:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:13,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:23:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:13,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491608993] [2022-11-25 18:23:13,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491608993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:13,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:13,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:23:13,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846979172] [2022-11-25 18:23:13,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:13,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:23:13,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:13,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:23:13,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:23:13,614 INFO L87 Difference]: Start difference. First operand 1433 states and 2024 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:18,064 INFO L93 Difference]: Finished difference Result 4901 states and 7229 transitions. [2022-11-25 18:23:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:23:18,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-25 18:23:18,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:18,084 INFO L225 Difference]: With dead ends: 4901 [2022-11-25 18:23:18,084 INFO L226 Difference]: Without dead ends: 3487 [2022-11-25 18:23:18,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:23:18,092 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 2242 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 1145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1145 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:18,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 2627 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1145 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:23:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2022-11-25 18:23:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 2986. [2022-11-25 18:23:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2119 states have (on average 1.335063709296838) internal successors, (2829), 2195 states have internal predecessors, (2829), 678 states have call successors, (678), 165 states have call predecessors, (678), 188 states have return successors, (793), 669 states have call predecessors, (793), 673 states have call successors, (793) [2022-11-25 18:23:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 4300 transitions. [2022-11-25 18:23:18,304 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 4300 transitions. Word has length 39 [2022-11-25 18:23:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:18,304 INFO L495 AbstractCegarLoop]: Abstraction has 2986 states and 4300 transitions. [2022-11-25 18:23:18,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 4300 transitions. [2022-11-25 18:23:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 18:23:18,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:18,307 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:23:18,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:23:18,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:18,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash -227405644, now seen corresponding path program 1 times [2022-11-25 18:23:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:18,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798277975] [2022-11-25 18:23:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:18,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:18,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:18,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:23:18,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:18,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798277975] [2022-11-25 18:23:18,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798277975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:18,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:18,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:23:18,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279600081] [2022-11-25 18:23:18,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:23:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:23:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:23:18,794 INFO L87 Difference]: Start difference. First operand 2986 states and 4300 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:23,205 INFO L93 Difference]: Finished difference Result 9888 states and 14915 transitions. [2022-11-25 18:23:23,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:23:23,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-25 18:23:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:23,263 INFO L225 Difference]: With dead ends: 9888 [2022-11-25 18:23:23,264 INFO L226 Difference]: Without dead ends: 6921 [2022-11-25 18:23:23,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:23:23,282 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 2244 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 1165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 2692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1165 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:23,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2347 Valid, 2526 Invalid, 2692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1165 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 18:23:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6921 states. [2022-11-25 18:23:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6921 to 6085. [2022-11-25 18:23:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 4324 states have (on average 1.3304810360777057) internal successors, (5753), 4472 states have internal predecessors, (5753), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-25 18:23:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 8932 transitions. [2022-11-25 18:23:23,790 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 8932 transitions. Word has length 40 [2022-11-25 18:23:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:23,791 INFO L495 AbstractCegarLoop]: Abstraction has 6085 states and 8932 transitions. [2022-11-25 18:23:23,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:23,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 8932 transitions. [2022-11-25 18:23:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 18:23:23,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:23,793 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:23:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:23:23,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1539961107, now seen corresponding path program 1 times [2022-11-25 18:23:23,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:23,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441726947] [2022-11-25 18:23:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:23,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:23:24,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:24,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441726947] [2022-11-25 18:23:24,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441726947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:24,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:24,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:23:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107358951] [2022-11-25 18:23:24,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:24,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:23:24,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:23:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:23:24,028 INFO L87 Difference]: Start difference. First operand 6085 states and 8932 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:28,106 INFO L93 Difference]: Finished difference Result 6919 states and 10282 transitions. [2022-11-25 18:23:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:23:28,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-25 18:23:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:28,154 INFO L225 Difference]: With dead ends: 6919 [2022-11-25 18:23:28,155 INFO L226 Difference]: Without dead ends: 6916 [2022-11-25 18:23:28,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:23:28,161 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 2244 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:28,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2347 Valid, 2532 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 18:23:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2022-11-25 18:23:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 6086. [2022-11-25 18:23:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 4325 states have (on average 1.3304046242774565) internal successors, (5754), 4473 states have internal predecessors, (5754), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-25 18:23:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 8933 transitions. [2022-11-25 18:23:28,713 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 8933 transitions. Word has length 41 [2022-11-25 18:23:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:28,714 INFO L495 AbstractCegarLoop]: Abstraction has 6086 states and 8933 transitions. [2022-11-25 18:23:28,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 8933 transitions. [2022-11-25 18:23:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 18:23:28,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:28,716 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:23:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:23:28,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:28,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash 493760407, now seen corresponding path program 1 times [2022-11-25 18:23:28,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:28,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724053367] [2022-11-25 18:23:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:28,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:23:28,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:28,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724053367] [2022-11-25 18:23:28,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724053367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:28,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:28,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:23:28,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360558703] [2022-11-25 18:23:28,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:28,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:23:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:28,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:23:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:23:28,930 INFO L87 Difference]: Start difference. First operand 6086 states and 8933 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:31,248 INFO L93 Difference]: Finished difference Result 6915 states and 10278 transitions. [2022-11-25 18:23:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:23:31,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-25 18:23:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:31,287 INFO L225 Difference]: With dead ends: 6915 [2022-11-25 18:23:31,288 INFO L226 Difference]: Without dead ends: 6912 [2022-11-25 18:23:31,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:23:31,293 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1585 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:31,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 1574 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 18:23:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2022-11-25 18:23:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 6085. [2022-11-25 18:23:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 4325 states have (on average 1.3301734104046243) internal successors, (5753), 4472 states have internal predecessors, (5753), 1361 states have call successors, (1361), 327 states have call predecessors, (1361), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-25 18:23:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 8931 transitions. [2022-11-25 18:23:31,829 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 8931 transitions. Word has length 42 [2022-11-25 18:23:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:31,832 INFO L495 AbstractCegarLoop]: Abstraction has 6085 states and 8931 transitions. [2022-11-25 18:23:31,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 8931 transitions. [2022-11-25 18:23:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 18:23:31,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:31,835 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:23:31,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:23:31,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1873685354, now seen corresponding path program 1 times [2022-11-25 18:23:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:31,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934160026] [2022-11-25 18:23:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:23:32,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:32,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934160026] [2022-11-25 18:23:32,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934160026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:32,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:32,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:23:32,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546944121] [2022-11-25 18:23:32,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:32,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:23:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:23:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:23:32,047 INFO L87 Difference]: Start difference. First operand 6085 states and 8931 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:34,307 INFO L93 Difference]: Finished difference Result 6914 states and 10276 transitions. [2022-11-25 18:23:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:23:34,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-25 18:23:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:34,352 INFO L225 Difference]: With dead ends: 6914 [2022-11-25 18:23:34,352 INFO L226 Difference]: Without dead ends: 6902 [2022-11-25 18:23:34,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:23:34,358 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 1580 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:34,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1673 Valid, 1579 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 18:23:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6902 states. [2022-11-25 18:23:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6902 to 6075. [2022-11-25 18:23:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6075 states, 4316 states have (on average 1.329935125115848) internal successors, (5740), 4462 states have internal predecessors, (5740), 1360 states have call successors, (1360), 327 states have call predecessors, (1360), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-25 18:23:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6075 states to 6075 states and 8917 transitions. [2022-11-25 18:23:34,890 INFO L78 Accepts]: Start accepts. Automaton has 6075 states and 8917 transitions. Word has length 43 [2022-11-25 18:23:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:34,891 INFO L495 AbstractCegarLoop]: Abstraction has 6075 states and 8917 transitions. [2022-11-25 18:23:34,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 18:23:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6075 states and 8917 transitions. [2022-11-25 18:23:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-25 18:23:34,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:34,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-25 18:23:34,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:23:34,903 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:34,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1836418368, now seen corresponding path program 1 times [2022-11-25 18:23:34,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:34,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861235102] [2022-11-25 18:23:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:34,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:23:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:23:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:23:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:23:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 18:23:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:23:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:23:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:23:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:23:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:23:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:23:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 18:23:35,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:35,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861235102] [2022-11-25 18:23:35,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861235102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:35,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:35,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 18:23:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333992395] [2022-11-25 18:23:35,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:35,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:23:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:23:35,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:23:35,485 INFO L87 Difference]: Start difference. First operand 6075 states and 8917 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 18:23:39,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:39,475 INFO L93 Difference]: Finished difference Result 14644 states and 21643 transitions. [2022-11-25 18:23:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:23:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-11-25 18:23:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:39,516 INFO L225 Difference]: With dead ends: 14644 [2022-11-25 18:23:39,517 INFO L226 Difference]: Without dead ends: 8588 [2022-11-25 18:23:39,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:23:39,542 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 2974 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 2185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2185 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:39,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 2721 Invalid, 3789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2185 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 18:23:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8588 states. [2022-11-25 18:23:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8588 to 7239. [2022-11-25 18:23:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7239 states, 5161 states have (on average 1.326487114900213) internal successors, (6846), 5339 states have internal predecessors, (6846), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-11-25 18:23:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7239 states to 7239 states and 10565 transitions. [2022-11-25 18:23:40,243 INFO L78 Accepts]: Start accepts. Automaton has 7239 states and 10565 transitions. Word has length 143 [2022-11-25 18:23:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:40,243 INFO L495 AbstractCegarLoop]: Abstraction has 7239 states and 10565 transitions. [2022-11-25 18:23:40,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 18:23:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 7239 states and 10565 transitions. [2022-11-25 18:23:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-25 18:23:40,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:40,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-25 18:23:40,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:23:40,257 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:40,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash 747404625, now seen corresponding path program 1 times [2022-11-25 18:23:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:40,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715837081] [2022-11-25 18:23:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:40,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:23:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:23:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 18:23:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:23:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 18:23:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:23:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:23:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:23:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:23:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:23:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 18:23:40,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:40,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715837081] [2022-11-25 18:23:40,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715837081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:40,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:40,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 18:23:40,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861815940] [2022-11-25 18:23:40,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:40,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:23:40,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:40,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:23:40,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:23:40,689 INFO L87 Difference]: Start difference. First operand 7239 states and 10565 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 18:23:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:45,223 INFO L93 Difference]: Finished difference Result 15788 states and 23271 transitions. [2022-11-25 18:23:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:23:45,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-11-25 18:23:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:45,262 INFO L225 Difference]: With dead ends: 15788 [2022-11-25 18:23:45,262 INFO L226 Difference]: Without dead ends: 8572 [2022-11-25 18:23:45,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:23:45,287 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1706 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 1246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 3500 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1246 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:45,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 3500 Invalid, 3430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1246 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 18:23:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2022-11-25 18:23:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 7247. [2022-11-25 18:23:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 5169 states have (on average 1.3259818146643452) internal successors, (6854), 5347 states have internal predecessors, (6854), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-11-25 18:23:46,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 10573 transitions. [2022-11-25 18:23:46,018 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 10573 transitions. Word has length 152 [2022-11-25 18:23:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:46,020 INFO L495 AbstractCegarLoop]: Abstraction has 7247 states and 10573 transitions. [2022-11-25 18:23:46,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 18:23:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 10573 transitions. [2022-11-25 18:23:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-25 18:23:46,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:46,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-25 18:23:46,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:23:46,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1634627471, now seen corresponding path program 1 times [2022-11-25 18:23:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:46,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136967119] [2022-11-25 18:23:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:46,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:46,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:23:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:23:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 18:23:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:23:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 18:23:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:23:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:23:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:23:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:23:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:23:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 18:23:47,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136967119] [2022-11-25 18:23:47,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136967119] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:23:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704233552] [2022-11-25 18:23:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:47,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:23:47,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:23:47,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:23:47,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:23:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:47,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:23:47,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:23:48,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:23:48,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704233552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:48,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:23:48,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-25 18:23:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348258734] [2022-11-25 18:23:48,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:48,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:23:48,064 INFO L87 Difference]: Start difference. First operand 7247 states and 10573 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 18:23:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:48,836 INFO L93 Difference]: Finished difference Result 14701 states and 21497 transitions. [2022-11-25 18:23:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:48,836 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-11-25 18:23:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:48,870 INFO L225 Difference]: With dead ends: 14701 [2022-11-25 18:23:48,870 INFO L226 Difference]: Without dead ends: 7477 [2022-11-25 18:23:48,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:23:48,899 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 223 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:48,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2016 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:23:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2022-11-25 18:23:49,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7247. [2022-11-25 18:23:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 5169 states have (on average 1.3244341265235056) internal successors, (6846), 5339 states have internal predecessors, (6846), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-11-25 18:23:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 10565 transitions. [2022-11-25 18:23:49,504 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 10565 transitions. Word has length 152 [2022-11-25 18:23:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:49,504 INFO L495 AbstractCegarLoop]: Abstraction has 7247 states and 10565 transitions. [2022-11-25 18:23:49,504 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 18:23:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 10565 transitions. [2022-11-25 18:23:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-25 18:23:49,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:49,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-25 18:23:49,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:49,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:23:49,725 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash -796703472, now seen corresponding path program 1 times [2022-11-25 18:23:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:49,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497658073] [2022-11-25 18:23:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:23:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:23:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 18:23:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 18:23:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:23:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 18:23:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:23:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:23:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:51,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:23:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:51,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:23:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:23:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 18:23:51,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:51,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497658073] [2022-11-25 18:23:51,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497658073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:23:51,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092705364] [2022-11-25 18:23:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:51,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:23:51,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:23:51,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:23:51,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:23:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:51,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-25 18:23:51,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:23:52,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:23:52,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092705364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:52,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:23:52,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2022-11-25 18:23:52,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925632023] [2022-11-25 18:23:52,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:52,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:23:52,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:23:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-25 18:23:52,168 INFO L87 Difference]: Start difference. First operand 7247 states and 10565 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:23:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:54,111 INFO L93 Difference]: Finished difference Result 23673 states and 34941 transitions. [2022-11-25 18:23:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 18:23:54,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2022-11-25 18:23:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:54,188 INFO L225 Difference]: With dead ends: 23673 [2022-11-25 18:23:54,188 INFO L226 Difference]: Without dead ends: 16449 [2022-11-25 18:23:54,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-11-25 18:23:54,213 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1513 mSDsluCounter, 12897 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 14238 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:54,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 14238 Invalid, 353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:23:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16449 states. [2022-11-25 18:23:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16449 to 7311. [2022-11-25 18:23:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7311 states, 5221 states have (on average 1.321202834705995) internal successors, (6898), 5387 states have internal predecessors, (6898), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 539 states have return successors, (2217), 1659 states have call predecessors, (2217), 1547 states have call successors, (2217) [2022-11-25 18:23:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7311 states to 7311 states and 10665 transitions. [2022-11-25 18:23:55,097 INFO L78 Accepts]: Start accepts. Automaton has 7311 states and 10665 transitions. Word has length 157 [2022-11-25 18:23:55,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:55,098 INFO L495 AbstractCegarLoop]: Abstraction has 7311 states and 10665 transitions. [2022-11-25 18:23:55,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:23:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7311 states and 10665 transitions. [2022-11-25 18:23:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-25 18:23:55,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:55,111 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:23:55,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 18:23:55,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:23:55,322 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1329675430, now seen corresponding path program 1 times [2022-11-25 18:23:55,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:55,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710535076] [2022-11-25 18:23:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:55,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:23:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:23:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:23:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 18:23:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 18:23:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:23:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:23:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 18:23:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:23:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:23:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:23:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:23:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:23:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 18:23:56,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:56,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710535076] [2022-11-25 18:23:56,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710535076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:23:56,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980811881] [2022-11-25 18:23:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:56,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:23:56,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:23:56,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:23:56,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:23:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:57,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:23:57,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:23:57,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:23:57,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980811881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:57,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:23:57,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-25 18:23:57,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165284630] [2022-11-25 18:23:57,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:57,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:23:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:57,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:23:57,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:23:57,251 INFO L87 Difference]: Start difference. First operand 7311 states and 10665 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 18:23:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:57,883 INFO L93 Difference]: Finished difference Result 14604 states and 21311 transitions. [2022-11-25 18:23:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:23:57,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-11-25 18:23:57,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:57,919 INFO L225 Difference]: With dead ends: 14604 [2022-11-25 18:23:57,919 INFO L226 Difference]: Without dead ends: 7312 [2022-11-25 18:23:57,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:23:57,940 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 2 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:57,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3076 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:23:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2022-11-25 18:23:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 7312. [2022-11-25 18:23:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7312 states, 5222 states have (on average 1.3211413251627728) internal successors, (6899), 5388 states have internal predecessors, (6899), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 539 states have return successors, (2217), 1659 states have call predecessors, (2217), 1547 states have call successors, (2217) [2022-11-25 18:23:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7312 states to 7312 states and 10666 transitions. [2022-11-25 18:23:58,835 INFO L78 Accepts]: Start accepts. Automaton has 7312 states and 10666 transitions. Word has length 163 [2022-11-25 18:23:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:58,836 INFO L495 AbstractCegarLoop]: Abstraction has 7312 states and 10666 transitions. [2022-11-25 18:23:58,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 18:23:58,836 INFO L276 IsEmpty]: Start isEmpty. Operand 7312 states and 10666 transitions. [2022-11-25 18:23:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-25 18:23:58,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:58,852 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:23:58,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:59,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 18:23:59,063 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:59,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:59,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1018686141, now seen corresponding path program 1 times [2022-11-25 18:23:59,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:59,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807249238] [2022-11-25 18:23:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:59,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:23:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:23:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:59,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:23:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 18:23:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 18:24:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 18:24:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 18:24:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:24:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 18:24:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:24:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:24:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 18:24:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807249238] [2022-11-25 18:24:00,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807249238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294635114] [2022-11-25 18:24:00,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:00,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:00,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:00,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:00,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:24:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:01,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 18:24:01,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 18:24:01,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:01,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294635114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:01,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:01,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-11-25 18:24:01,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174426029] [2022-11-25 18:24:01,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:01,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:01,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:24:01,340 INFO L87 Difference]: Start difference. First operand 7312 states and 10666 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 18:24:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:02,151 INFO L93 Difference]: Finished difference Result 14900 states and 21802 transitions. [2022-11-25 18:24:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:02,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2022-11-25 18:24:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:02,177 INFO L225 Difference]: With dead ends: 14900 [2022-11-25 18:24:02,178 INFO L226 Difference]: Without dead ends: 7612 [2022-11-25 18:24:02,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:24:02,198 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 227 mSDsluCounter, 4345 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:02,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 5515 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:24:02,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7612 states. [2022-11-25 18:24:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7612 to 7352. [2022-11-25 18:24:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 5254 states have (on average 1.3207080319756377) internal successors, (6939), 5412 states have internal predecessors, (6939), 1558 states have call successors, (1558), 352 states have call predecessors, (1558), 539 states have return successors, (2225), 1675 states have call predecessors, (2225), 1555 states have call successors, (2225) [2022-11-25 18:24:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10722 transitions. [2022-11-25 18:24:02,941 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10722 transitions. Word has length 164 [2022-11-25 18:24:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:02,942 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 10722 transitions. [2022-11-25 18:24:02,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 18:24:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10722 transitions. [2022-11-25 18:24:02,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-25 18:24:02,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:02,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-25 18:24:02,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 18:24:03,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 18:24:03,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1879769671, now seen corresponding path program 2 times [2022-11-25 18:24:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:03,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085056342] [2022-11-25 18:24:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 18:24:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 18:24:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 18:24:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 18:24:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 18:24:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:24:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:24:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 18:24:04,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:04,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085056342] [2022-11-25 18:24:04,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085056342] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:04,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048910573] [2022-11-25 18:24:04,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:24:04,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:04,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:04,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:04,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:24:05,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:24:05,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:05,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 18:24:05,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 18:24:05,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:05,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048910573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:05,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:05,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-25 18:24:05,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183426792] [2022-11-25 18:24:05,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:05,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:24:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:05,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:24:05,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:24:05,424 INFO L87 Difference]: Start difference. First operand 7352 states and 10722 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 18:24:05,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:05,966 INFO L93 Difference]: Finished difference Result 14696 states and 21958 transitions. [2022-11-25 18:24:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:24:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2022-11-25 18:24:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:06,003 INFO L225 Difference]: With dead ends: 14696 [2022-11-25 18:24:06,003 INFO L226 Difference]: Without dead ends: 7352 [2022-11-25 18:24:06,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:24:06,030 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 0 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:06,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4098 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:24:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2022-11-25 18:24:06,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7352. [2022-11-25 18:24:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 5254 states have (on average 1.3207080319756377) internal successors, (6939), 5412 states have internal predecessors, (6939), 1558 states have call successors, (1558), 352 states have call predecessors, (1558), 539 states have return successors, (2217), 1675 states have call predecessors, (2217), 1555 states have call successors, (2217) [2022-11-25 18:24:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10714 transitions. [2022-11-25 18:24:06,813 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10714 transitions. Word has length 170 [2022-11-25 18:24:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:06,813 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 10714 transitions. [2022-11-25 18:24:06,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 18:24:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10714 transitions. [2022-11-25 18:24:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 18:24:06,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:06,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 18:24:06,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:07,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:07,037 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:07,037 INFO L85 PathProgramCache]: Analyzing trace with hash 222400003, now seen corresponding path program 1 times [2022-11-25 18:24:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:07,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935659212] [2022-11-25 18:24:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 18:24:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:24:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 18:24:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 18:24:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 18:24:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:08,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:24:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:24:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-25 18:24:08,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:08,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935659212] [2022-11-25 18:24:08,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935659212] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:08,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597196983] [2022-11-25 18:24:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:08,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:08,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:08,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:24:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:08,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-25 18:24:08,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 18:24:09,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:09,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597196983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:09,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:09,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-11-25 18:24:09,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712436938] [2022-11-25 18:24:09,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:09,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 18:24:09,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 18:24:09,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-11-25 18:24:09,195 INFO L87 Difference]: Start difference. First operand 7352 states and 10714 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-25 18:24:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:11,663 INFO L93 Difference]: Finished difference Result 17180 states and 25497 transitions. [2022-11-25 18:24:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 18:24:11,664 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 176 [2022-11-25 18:24:11,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:11,712 INFO L225 Difference]: With dead ends: 17180 [2022-11-25 18:24:11,712 INFO L226 Difference]: Without dead ends: 9852 [2022-11-25 18:24:11,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 18:24:11,736 INFO L413 NwaCegarLoop]: 2015 mSDtfsCounter, 2252 mSDsluCounter, 17325 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 19340 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:11,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 19340 Invalid, 820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [198 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 18:24:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9852 states. [2022-11-25 18:24:12,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9852 to 7327. [2022-11-25 18:24:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7327 states, 5237 states have (on average 1.320030551842658) internal successors, (6913), 5395 states have internal predecessors, (6913), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 539 states have return successors, (2209), 1667 states have call predecessors, (2209), 1547 states have call successors, (2209) [2022-11-25 18:24:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 10672 transitions. [2022-11-25 18:24:12,844 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 10672 transitions. Word has length 176 [2022-11-25 18:24:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:12,844 INFO L495 AbstractCegarLoop]: Abstraction has 7327 states and 10672 transitions. [2022-11-25 18:24:12,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-25 18:24:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 10672 transitions. [2022-11-25 18:24:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-25 18:24:12,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:12,858 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:12,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:13,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:13,069 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:13,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:13,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1907114897, now seen corresponding path program 1 times [2022-11-25 18:24:13,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:13,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844370930] [2022-11-25 18:24:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:13,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 18:24:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:24:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 18:24:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 18:24:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:24:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 18:24:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-25 18:24:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:24:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:24:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-25 18:24:14,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:14,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844370930] [2022-11-25 18:24:14,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844370930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:14,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898668402] [2022-11-25 18:24:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:14,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:14,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:14,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:14,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:24:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:15,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 18:24:15,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 18:24:16,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 18:24:16,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898668402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:16,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:16,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 24 [2022-11-25 18:24:16,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810840181] [2022-11-25 18:24:16,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:16,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:24:16,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:16,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:24:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:24:16,740 INFO L87 Difference]: Start difference. First operand 7327 states and 10672 transitions. Second operand has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 15 states have internal predecessors, (244), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) [2022-11-25 18:24:31,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:31,972 INFO L93 Difference]: Finished difference Result 17235 states and 25720 transitions. [2022-11-25 18:24:31,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 18:24:31,973 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 15 states have internal predecessors, (244), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) Word has length 196 [2022-11-25 18:24:31,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:32,017 INFO L225 Difference]: With dead ends: 17235 [2022-11-25 18:24:32,018 INFO L226 Difference]: Without dead ends: 9932 [2022-11-25 18:24:32,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=1280, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 18:24:32,040 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 6135 mSDsluCounter, 11726 mSDsCounter, 0 mSdLazyCounter, 10441 mSolverCounterSat, 3997 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 12914 SdHoareTripleChecker+Invalid, 14438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3997 IncrementalHoareTripleChecker+Valid, 10441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:32,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 12914 Invalid, 14438 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3997 Valid, 10441 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-11-25 18:24:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2022-11-25 18:24:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 7099. [2022-11-25 18:24:33,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7099 states, 5085 states have (on average 1.32055063913471) internal successors, (6715), 5235 states have internal predecessors, (6715), 1480 states have call successors, (1480), 348 states have call predecessors, (1480), 533 states have return successors, (2119), 1599 states have call predecessors, (2119), 1477 states have call successors, (2119) [2022-11-25 18:24:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 10314 transitions. [2022-11-25 18:24:33,078 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 10314 transitions. Word has length 196 [2022-11-25 18:24:33,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:33,079 INFO L495 AbstractCegarLoop]: Abstraction has 7099 states and 10314 transitions. [2022-11-25 18:24:33,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 15 states have internal predecessors, (244), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) [2022-11-25 18:24:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 10314 transitions. [2022-11-25 18:24:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-25 18:24:33,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:33,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:33,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:24:33,302 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2083453667, now seen corresponding path program 2 times [2022-11-25 18:24:33,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:33,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326143004] [2022-11-25 18:24:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:33,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 18:24:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:24:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 18:24:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 18:24:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 18:24:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:24:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:24:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-25 18:24:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:24:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:24:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:24:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:24:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-25 18:24:34,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:34,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326143004] [2022-11-25 18:24:34,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326143004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:34,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599366489] [2022-11-25 18:24:34,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:24:34,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:34,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:34,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:34,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:24:35,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:24:35,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:35,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 148 conjunts are in the unsatisfiable core [2022-11-25 18:24:35,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:35,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:24:35,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:24:35,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 18:24:35,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 18:24:36,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-11-25 18:24:36,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-25 18:24:36,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-25 18:24:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:24:36,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:56,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599366489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:56,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:56,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 31 [2022-11-25 18:24:56,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142201598] [2022-11-25 18:24:56,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:56,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 18:24:56,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 18:24:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1474, Unknown=4, NotChecked=0, Total=1640 [2022-11-25 18:24:56,699 INFO L87 Difference]: Start difference. First operand 7099 states and 10314 transitions. Second operand has 31 states, 30 states have (on average 7.166666666666667) internal successors, (215), 21 states have internal predecessors, (215), 9 states have call successors, (41), 13 states have call predecessors, (41), 9 states have return successors, (37), 11 states have call predecessors, (37), 9 states have call successors, (37) [2022-11-25 18:25:03,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:05,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:07,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:09,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:13,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:17,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:19,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:37,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:39,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:42,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:54,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:25:56,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:26:03,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:26:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:26:18,622 INFO L93 Difference]: Finished difference Result 29382 states and 45110 transitions. [2022-11-25 18:26:18,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-11-25 18:26:18,622 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 7.166666666666667) internal successors, (215), 21 states have internal predecessors, (215), 9 states have call successors, (41), 13 states have call predecessors, (41), 9 states have return successors, (37), 11 states have call predecessors, (37), 9 states have call successors, (37) Word has length 196 [2022-11-25 18:26:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:26:18,706 INFO L225 Difference]: With dead ends: 29382 [2022-11-25 18:26:18,706 INFO L226 Difference]: Without dead ends: 22293 [2022-11-25 18:26:18,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 301 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4915 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=2621, Invalid=14667, Unknown=4, NotChecked=0, Total=17292 [2022-11-25 18:26:18,734 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 9116 mSDsluCounter, 24758 mSDsCounter, 0 mSdLazyCounter, 31976 mSolverCounterSat, 7176 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9238 SdHoareTripleChecker+Valid, 26295 SdHoareTripleChecker+Invalid, 39165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 7176 IncrementalHoareTripleChecker+Valid, 31976 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:26:18,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9238 Valid, 26295 Invalid, 39165 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [7176 Valid, 31976 Invalid, 13 Unknown, 0 Unchecked, 69.1s Time] [2022-11-25 18:26:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22293 states. [2022-11-25 18:26:21,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22293 to 17710. [2022-11-25 18:26:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17710 states, 12720 states have (on average 1.3338836477987421) internal successors, (16967), 13198 states have internal predecessors, (16967), 3570 states have call successors, (3570), 884 states have call predecessors, (3570), 1419 states have return successors, (6343), 3811 states have call predecessors, (6343), 3567 states have call successors, (6343) [2022-11-25 18:26:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17710 states to 17710 states and 26880 transitions. [2022-11-25 18:26:21,248 INFO L78 Accepts]: Start accepts. Automaton has 17710 states and 26880 transitions. Word has length 196 [2022-11-25 18:26:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:26:21,249 INFO L495 AbstractCegarLoop]: Abstraction has 17710 states and 26880 transitions. [2022-11-25 18:26:21,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 7.166666666666667) internal successors, (215), 21 states have internal predecessors, (215), 9 states have call successors, (41), 13 states have call predecessors, (41), 9 states have return successors, (37), 11 states have call predecessors, (37), 9 states have call successors, (37) [2022-11-25 18:26:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 17710 states and 26880 transitions. [2022-11-25 18:26:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-25 18:26:21,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:26:21,262 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:26:21,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:26:21,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 18:26:21,473 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:26:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:26:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 20655744, now seen corresponding path program 1 times [2022-11-25 18:26:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:26:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612868433] [2022-11-25 18:26:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:26:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:26:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:26:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 18:26:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 18:26:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:26:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:26:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:26:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 18:26:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 18:26:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:26:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:26:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 18:26:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:26:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:26:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-25 18:26:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:26:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:26:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:26:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:26:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:26:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-25 18:26:22,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:26:22,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612868433] [2022-11-25 18:26:22,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612868433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:26:22,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962756142] [2022-11-25 18:26:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:26:22,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:26:22,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:26:22,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:26:22,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:26:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:23,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:26:23,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:26:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-25 18:26:23,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:26:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-25 18:26:24,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962756142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:26:24,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:26:24,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2022-11-25 18:26:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563631589] [2022-11-25 18:26:24,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:26:24,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 18:26:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:26:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 18:26:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-25 18:26:24,082 INFO L87 Difference]: Start difference. First operand 17710 states and 26880 transitions. Second operand has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (52), 10 states have call predecessors, (52), 5 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-25 18:26:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:26:35,404 INFO L93 Difference]: Finished difference Result 37011 states and 56383 transitions. [2022-11-25 18:26:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 18:26:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (52), 10 states have call predecessors, (52), 5 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 204 [2022-11-25 18:26:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:26:35,467 INFO L225 Difference]: With dead ends: 37011 [2022-11-25 18:26:35,467 INFO L226 Difference]: Without dead ends: 19320 [2022-11-25 18:26:35,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 18:26:35,514 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 1935 mSDsluCounter, 6971 mSDsCounter, 0 mSdLazyCounter, 4854 mSolverCounterSat, 1505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 7758 SdHoareTripleChecker+Invalid, 6359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1505 IncrementalHoareTripleChecker+Valid, 4854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:26:35,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 7758 Invalid, 6359 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1505 Valid, 4854 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-25 18:26:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19320 states. [2022-11-25 18:26:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19320 to 17714. [2022-11-25 18:26:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17714 states, 12724 states have (on average 1.333857277585665) internal successors, (16972), 13202 states have internal predecessors, (16972), 3570 states have call successors, (3570), 884 states have call predecessors, (3570), 1419 states have return successors, (6343), 3811 states have call predecessors, (6343), 3567 states have call successors, (6343) [2022-11-25 18:26:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17714 states to 17714 states and 26885 transitions. [2022-11-25 18:26:38,266 INFO L78 Accepts]: Start accepts. Automaton has 17714 states and 26885 transitions. Word has length 204 [2022-11-25 18:26:38,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:26:38,266 INFO L495 AbstractCegarLoop]: Abstraction has 17714 states and 26885 transitions. [2022-11-25 18:26:38,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (52), 10 states have call predecessors, (52), 5 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-25 18:26:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 17714 states and 26885 transitions. [2022-11-25 18:26:38,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-25 18:26:38,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:26:38,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-25 18:26:38,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:26:38,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:26:38,478 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:26:38,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:26:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1851771552, now seen corresponding path program 2 times [2022-11-25 18:26:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:26:38,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678290658] [2022-11-25 18:26:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:26:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:26:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:40,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:26:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-25 18:26:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:40,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 18:26:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:26:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:40,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 18:26:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:26:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:26:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:26:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:26:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:26:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:26:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:26:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:26:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:26:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-25 18:26:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:26:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:26:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:26:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 18:26:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:26:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-25 18:26:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:26:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678290658] [2022-11-25 18:26:42,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678290658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:26:42,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:26:42,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-25 18:26:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717567244] [2022-11-25 18:26:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:26:42,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 18:26:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:26:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 18:26:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-25 18:26:42,114 INFO L87 Difference]: Start difference. First operand 17714 states and 26885 transitions. Second operand has 22 states, 22 states have (on average 5.590909090909091) internal successors, (123), 13 states have internal predecessors, (123), 8 states have call successors, (22), 10 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-25 18:27:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:04,818 INFO L93 Difference]: Finished difference Result 51222 states and 79022 transitions. [2022-11-25 18:27:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-25 18:27:04,819 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.590909090909091) internal successors, (123), 13 states have internal predecessors, (123), 8 states have call successors, (22), 10 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 7 states have call successors, (22) Word has length 206 [2022-11-25 18:27:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:04,948 INFO L225 Difference]: With dead ends: 51222 [2022-11-25 18:27:04,948 INFO L226 Difference]: Without dead ends: 33532 [2022-11-25 18:27:04,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=649, Invalid=2321, Unknown=0, NotChecked=0, Total=2970 [2022-11-25 18:27:05,000 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 10888 mSDsluCounter, 7529 mSDsCounter, 0 mSdLazyCounter, 8473 mSolverCounterSat, 6905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10954 SdHoareTripleChecker+Valid, 8375 SdHoareTripleChecker+Invalid, 15378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6905 IncrementalHoareTripleChecker+Valid, 8473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:05,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10954 Valid, 8375 Invalid, 15378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6905 Valid, 8473 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-11-25 18:27:05,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33532 states. [2022-11-25 18:27:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33532 to 29086. [2022-11-25 18:27:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29086 states, 20908 states have (on average 1.335565333843505) internal successors, (27924), 21714 states have internal predecessors, (27924), 5882 states have call successors, (5882), 1484 states have call predecessors, (5882), 2295 states have return successors, (10135), 6191 states have call predecessors, (10135), 5879 states have call successors, (10135) [2022-11-25 18:27:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29086 states to 29086 states and 43941 transitions. [2022-11-25 18:27:10,140 INFO L78 Accepts]: Start accepts. Automaton has 29086 states and 43941 transitions. Word has length 206 [2022-11-25 18:27:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:10,140 INFO L495 AbstractCegarLoop]: Abstraction has 29086 states and 43941 transitions. [2022-11-25 18:27:10,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.590909090909091) internal successors, (123), 13 states have internal predecessors, (123), 8 states have call successors, (22), 10 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-25 18:27:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 29086 states and 43941 transitions. [2022-11-25 18:27:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-25 18:27:10,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:10,151 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:10,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 18:27:10,151 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:10,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2099838639, now seen corresponding path program 1 times [2022-11-25 18:27:10,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:10,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065543146] [2022-11-25 18:27:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:27:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:27:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-25 18:27:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 18:27:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:27:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 18:27:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:27:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:27:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:27:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:27:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:27:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:27:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:27:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 18:27:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-25 18:27:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 18:27:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-25 18:27:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-25 18:27:10,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:10,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065543146] [2022-11-25 18:27:10,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065543146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:10,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:10,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 18:27:10,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126744009] [2022-11-25 18:27:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:10,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:27:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:27:10,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:27:10,814 INFO L87 Difference]: Start difference. First operand 29086 states and 43941 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 18:27:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:32,049 INFO L93 Difference]: Finished difference Result 100409 states and 154763 transitions. [2022-11-25 18:27:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 18:27:32,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 202 [2022-11-25 18:27:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:32,321 INFO L225 Difference]: With dead ends: 100409 [2022-11-25 18:27:32,321 INFO L226 Difference]: Without dead ends: 71352 [2022-11-25 18:27:32,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:27:32,593 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 5805 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 4048 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5910 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 7059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4048 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:32,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5910 Valid, 3925 Invalid, 7059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4048 Valid, 3011 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-25 18:27:32,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71352 states. [2022-11-25 18:27:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71352 to 28688. [2022-11-25 18:27:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28688 states, 20600 states have (on average 1.3371844660194174) internal successors, (27546), 21376 states have internal predecessors, (27546), 5852 states have call successors, (5852), 1484 states have call predecessors, (5852), 2235 states have return successors, (9851), 6131 states have call predecessors, (9851), 5849 states have call successors, (9851) [2022-11-25 18:27:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28688 states to 28688 states and 43249 transitions. [2022-11-25 18:27:39,382 INFO L78 Accepts]: Start accepts. Automaton has 28688 states and 43249 transitions. Word has length 202 [2022-11-25 18:27:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:39,382 INFO L495 AbstractCegarLoop]: Abstraction has 28688 states and 43249 transitions. [2022-11-25 18:27:39,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-25 18:27:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 28688 states and 43249 transitions. [2022-11-25 18:27:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-25 18:27:39,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:39,392 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 18:27:39,392 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:39,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1184011407, now seen corresponding path program 1 times [2022-11-25 18:27:39,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:39,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675982781] [2022-11-25 18:27:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:27:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:27:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-25 18:27:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 18:27:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:27:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 18:27:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:27:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:27:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:27:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:27:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 18:27:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:27:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:27:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 18:27:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 18:27:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-25 18:27:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:39,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 18:27:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-25 18:27:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-25 18:27:40,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:40,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675982781] [2022-11-25 18:27:40,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675982781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:40,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512787480] [2022-11-25 18:27:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:40,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:40,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:40,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e265b0e-1373-4562-9e33-f9cfacd870d7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:27:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:40,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 3256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:40,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-25 18:27:41,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:41,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512787480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:41,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:27:41,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-11-25 18:27:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406011326] [2022-11-25 18:27:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:41,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:41,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:27:41,215 INFO L87 Difference]: Start difference. First operand 28688 states and 43249 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)