./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:31:56,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:31:56,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:31:56,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:31:56,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:31:56,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:31:56,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:31:56,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:31:56,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:31:56,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:31:56,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:31:56,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:31:56,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:31:56,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:31:56,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:31:56,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:31:56,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:31:56,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:31:56,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:31:56,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:31:56,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:31:56,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:31:56,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:31:56,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:31:56,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:31:56,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:31:56,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:31:56,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:31:56,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:31:56,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:31:56,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:31:56,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:31:56,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:31:56,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:31:56,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:31:56,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:31:56,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:31:56,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:31:56,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:31:56,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:31:56,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:31:56,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 18:31:56,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:31:56,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:31:56,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:31:56,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:31:56,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:31:56,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:31:56,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:31:56,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:31:56,475 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:31:56,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:31:56,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:31:56,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:31:56,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:31:56,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:31:56,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:31:56,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:31:56,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:31:56,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:31:56,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:31:56,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:31:56,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:31:56,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:31:56,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:31:56,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:31:56,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:31:56,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:31:56,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:31:56,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:31:56,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:31:56,479 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:31:56,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:31:56,479 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:31:56,479 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_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-12-13 18:31:56,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:31:56,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:31:56,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:31:56,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:31:56,700 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:31:56,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-12-13 18:31:59,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:31:59,637 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:31:59,637 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-12-13 18:31:59,669 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/data/dae5ecd0d/6711375f18134d7080a9bf4b1e7c3b46/FLAGafd7e1b58 [2022-12-13 18:31:59,872 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/data/dae5ecd0d/6711375f18134d7080a9bf4b1e7c3b46 [2022-12-13 18:31:59,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:31:59,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:31:59,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:31:59,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:31:59,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:31:59,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:31:59" (1/1) ... [2022-12-13 18:31:59,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ae8558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:59, skipping insertion in model container [2022-12-13 18:31:59,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:31:59" (1/1) ... [2022-12-13 18:31:59,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:31:59,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:32:00,321 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-12-13 18:32:00,321 WARN L623 FunctionHandler]: Unknown extern function lockdep_rcu_dereference [2022-12-13 18:32:00,361 WARN L623 FunctionHandler]: Unknown extern function __get_free_pages [2022-12-13 18:32:00,366 WARN L623 FunctionHandler]: Unknown extern function kmem_cache_alloc_notrace [2022-12-13 18:32:00,382 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-12-13 18:32:00,382 WARN L623 FunctionHandler]: Unknown extern function lockdep_rcu_dereference [2022-12-13 18:32:00,392 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 18:32:00,394 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 18:32:00,395 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 18:32:00,396 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 18:32:00,397 WARN L623 FunctionHandler]: Unknown extern function __bad_size_call_parameter [2022-12-13 18:32:00,433 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,433 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-13 18:32:00,452 WARN L623 FunctionHandler]: Unknown extern function nonseekable_open [2022-12-13 18:32:00,453 WARN L623 FunctionHandler]: Unknown extern function snd_lookup_oss_minor_data [2022-12-13 18:32:00,454 WARN L623 FunctionHandler]: Unknown extern function snd_card_file_add [2022-12-13 18:32:00,455 WARN L623 FunctionHandler]: Unknown extern function snd_card_file_remove [2022-12-13 18:32:00,456 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,456 WARN L623 FunctionHandler]: Unknown extern function snd_card_file_remove [2022-12-13 18:32:00,460 WARN L623 FunctionHandler]: Unknown extern function module_put [2022-12-13 18:32:00,460 WARN L623 FunctionHandler]: Unknown extern function snd_card_file_remove [2022-12-13 18:32:00,460 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,463 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,465 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,469 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,470 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,511 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,512 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,533 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,535 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,536 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,537 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,538 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,538 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,539 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,540 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,541 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,542 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,542 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,543 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,544 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,550 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,562 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_id [2022-12-13 18:32:00,565 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_numid [2022-12-13 18:32:00,569 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,570 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,573 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_numid [2022-12-13 18:32:00,575 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,575 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,583 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_numid [2022-12-13 18:32:00,586 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_notify [2022-12-13 18:32:00,586 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,586 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,589 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_numid [2022-12-13 18:32:00,591 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_notify [2022-12-13 18:32:00,592 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,592 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,614 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,614 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,619 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_notify [2022-12-13 18:32:00,620 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,620 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,624 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,624 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,627 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,628 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,628 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,634 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,634 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,635 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,635 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,636 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,636 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,637 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,638 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,638 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,646 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,656 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-13 18:32:00,658 WARN L623 FunctionHandler]: Unknown extern function snd_iprintf [2022-12-13 18:32:00,658 WARN L623 FunctionHandler]: Unknown extern function snd_iprintf [2022-12-13 18:32:00,659 WARN L623 FunctionHandler]: Unknown extern function snd_iprintf [2022-12-13 18:32:00,659 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 18:32:00,662 WARN L623 FunctionHandler]: Unknown extern function snd_info_get_str [2022-12-13 18:32:00,663 WARN L623 FunctionHandler]: Unknown extern function __snd_printk [2022-12-13 18:32:00,664 WARN L623 FunctionHandler]: Unknown extern function snd_info_get_str [2022-12-13 18:32:00,664 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-13 18:32:00,664 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 18:32:00,665 WARN L623 FunctionHandler]: Unknown extern function snd_info_get_str [2022-12-13 18:32:00,665 WARN L623 FunctionHandler]: Unknown extern function simple_strtoul [2022-12-13 18:32:00,665 WARN L623 FunctionHandler]: Unknown extern function __snd_printk [2022-12-13 18:32:00,666 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-13 18:32:00,667 WARN L623 FunctionHandler]: Unknown extern function __snd_printk [2022-12-13 18:32:00,667 WARN L623 FunctionHandler]: Unknown extern function kstrdup [2022-12-13 18:32:00,668 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,668 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,668 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,669 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 18:32:00,669 WARN L623 FunctionHandler]: Unknown extern function snd_info_get_line [2022-12-13 18:32:00,671 WARN L623 FunctionHandler]: Unknown extern function snd_info_create_card_entry [2022-12-13 18:32:00,672 WARN L623 FunctionHandler]: Unknown extern function snd_info_register [2022-12-13 18:32:00,672 WARN L623 FunctionHandler]: Unknown extern function snd_info_free_entry [2022-12-13 18:32:00,675 WARN L623 FunctionHandler]: Unknown extern function snd_info_free_entry [2022-12-13 18:32:00,692 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,693 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,696 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-13 18:32:00,696 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,696 WARN L623 FunctionHandler]: Unknown extern function snd_register_oss_device [2022-12-13 18:32:00,697 WARN L623 FunctionHandler]: Unknown extern function __snd_printk [2022-12-13 18:32:00,697 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,698 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,698 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,698 WARN L623 FunctionHandler]: Unknown extern function snd_oss_info_register [2022-12-13 18:32:00,699 WARN L623 FunctionHandler]: Unknown extern function snd_oss_info_register [2022-12-13 18:32:00,699 WARN L623 FunctionHandler]: Unknown extern function snd_unregister_oss_device [2022-12-13 18:32:00,713 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,714 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,714 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-12-13 18:32:00,714 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,715 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,715 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,716 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,716 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,717 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,717 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,717 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,717 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,718 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,718 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,718 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,719 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,719 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,719 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,719 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,720 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,720 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,720 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,720 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,721 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,721 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,721 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,721 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,722 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,722 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,722 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,722 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,723 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,725 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_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-12-13 18:32:00,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:32:00,767 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:32:00,821 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-12-13 18:32:00,821 WARN L623 FunctionHandler]: Unknown extern function lockdep_rcu_dereference [2022-12-13 18:32:00,827 WARN L623 FunctionHandler]: Unknown extern function __get_free_pages [2022-12-13 18:32:00,829 WARN L623 FunctionHandler]: Unknown extern function kmem_cache_alloc_notrace [2022-12-13 18:32:00,831 WARN L623 FunctionHandler]: Unknown extern function debug_lockdep_rcu_enabled [2022-12-13 18:32:00,832 WARN L623 FunctionHandler]: Unknown extern function lockdep_rcu_dereference [2022-12-13 18:32:00,834 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 18:32:00,835 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 18:32:00,836 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 18:32:00,837 WARN L623 FunctionHandler]: Unknown extern function __bad_percpu_size [2022-12-13 18:32:00,837 WARN L623 FunctionHandler]: Unknown extern function __bad_size_call_parameter [2022-12-13 18:32:00,839 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,839 WARN L623 FunctionHandler]: Unknown extern function _copy_to_user [2022-12-13 18:32:00,840 WARN L623 FunctionHandler]: Unknown extern function nonseekable_open [2022-12-13 18:32:00,841 WARN L623 FunctionHandler]: Unknown extern function snd_lookup_oss_minor_data [2022-12-13 18:32:00,841 WARN L623 FunctionHandler]: Unknown extern function snd_card_file_add [2022-12-13 18:32:00,842 WARN L623 FunctionHandler]: Unknown extern function snd_card_file_remove [2022-12-13 18:32:00,845 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,845 WARN L623 FunctionHandler]: Unknown extern function snd_card_file_remove [2022-12-13 18:32:00,846 WARN L623 FunctionHandler]: Unknown extern function module_put [2022-12-13 18:32:00,846 WARN L623 FunctionHandler]: Unknown extern function snd_card_file_remove [2022-12-13 18:32:00,846 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,847 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,848 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,850 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,850 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,873 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,874 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,880 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,882 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,883 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,883 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,883 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,884 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,884 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,885 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,885 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,886 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,886 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,887 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,888 WARN L623 FunctionHandler]: Unknown extern function might_fault [2022-12-13 18:32:00,889 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,895 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_id [2022-12-13 18:32:00,903 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_numid [2022-12-13 18:32:00,905 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,906 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,906 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_numid [2022-12-13 18:32:00,908 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,909 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,910 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_numid [2022-12-13 18:32:00,912 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_notify [2022-12-13 18:32:00,913 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,913 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,913 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_find_numid [2022-12-13 18:32:00,915 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_notify [2022-12-13 18:32:00,915 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,916 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,923 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,924 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,927 WARN L623 FunctionHandler]: Unknown extern function snd_ctl_notify [2022-12-13 18:32:00,927 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,927 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,929 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,930 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,930 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,930 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,930 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,931 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,932 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,932 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,932 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,933 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,933 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,933 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,934 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,934 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,939 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,952 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-13 18:32:00,953 WARN L623 FunctionHandler]: Unknown extern function snd_iprintf [2022-12-13 18:32:00,954 WARN L623 FunctionHandler]: Unknown extern function snd_iprintf [2022-12-13 18:32:00,954 WARN L623 FunctionHandler]: Unknown extern function snd_iprintf [2022-12-13 18:32:00,955 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 18:32:00,955 WARN L623 FunctionHandler]: Unknown extern function snd_info_get_str [2022-12-13 18:32:00,956 WARN L623 FunctionHandler]: Unknown extern function __snd_printk [2022-12-13 18:32:00,956 WARN L623 FunctionHandler]: Unknown extern function snd_info_get_str [2022-12-13 18:32:00,956 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-13 18:32:00,956 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 18:32:00,957 WARN L623 FunctionHandler]: Unknown extern function snd_info_get_str [2022-12-13 18:32:00,957 WARN L623 FunctionHandler]: Unknown extern function simple_strtoul [2022-12-13 18:32:00,957 WARN L623 FunctionHandler]: Unknown extern function __snd_printk [2022-12-13 18:32:00,957 WARN L623 FunctionHandler]: Unknown extern function mutex_lock_nested [2022-12-13 18:32:00,958 WARN L623 FunctionHandler]: Unknown extern function __snd_printk [2022-12-13 18:32:00,958 WARN L623 FunctionHandler]: Unknown extern function kstrdup [2022-12-13 18:32:00,958 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,959 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,959 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,959 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-12-13 18:32:00,959 WARN L623 FunctionHandler]: Unknown extern function snd_info_get_line [2022-12-13 18:32:00,959 WARN L623 FunctionHandler]: Unknown extern function snd_info_create_card_entry [2022-12-13 18:32:00,963 WARN L623 FunctionHandler]: Unknown extern function snd_info_register [2022-12-13 18:32:00,963 WARN L623 FunctionHandler]: Unknown extern function snd_info_free_entry [2022-12-13 18:32:00,963 WARN L623 FunctionHandler]: Unknown extern function snd_info_free_entry [2022-12-13 18:32:00,976 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_fmt [2022-12-13 18:32:00,977 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,978 WARN L623 FunctionHandler]: Unknown extern function __mutex_init [2022-12-13 18:32:00,978 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 18:32:00,978 WARN L623 FunctionHandler]: Unknown extern function snd_register_oss_device [2022-12-13 18:32:00,979 WARN L623 FunctionHandler]: Unknown extern function __snd_printk [2022-12-13 18:32:00,979 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-12-13 18:32:00,980 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,980 WARN L623 FunctionHandler]: Unknown extern function strlcpy [2022-12-13 18:32:00,980 WARN L623 FunctionHandler]: Unknown extern function snd_oss_info_register [2022-12-13 18:32:00,983 WARN L623 FunctionHandler]: Unknown extern function snd_oss_info_register [2022-12-13 18:32:00,983 WARN L623 FunctionHandler]: Unknown extern function snd_unregister_oss_device [2022-12-13 18:32:00,984 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,985 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,985 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-12-13 18:32:00,985 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,985 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,986 WARN L623 FunctionHandler]: Unknown extern function ldv_handler_precall [2022-12-13 18:32:00,986 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,986 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,986 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,987 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,987 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,987 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,987 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,987 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,987 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,988 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,988 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,988 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,988 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,989 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,989 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,989 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,989 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,990 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,990 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,990 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,990 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,991 WARN L623 FunctionHandler]: Unknown extern function down_read [2022-12-13 18:32:00,991 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,991 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,992 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,992 WARN L623 FunctionHandler]: Unknown extern function up_read [2022-12-13 18:32:00,992 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_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-12-13 18:32:00,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:32:01,026 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:32:01,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01 WrapperNode [2022-12-13 18:32:01,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:32:01,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:32:01,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:32:01,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:32:01,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,195 INFO L138 Inliner]: procedures = 186, calls = 1553, calls flagged for inlining = 91, calls inlined = 88, statements flattened = 4274 [2022-12-13 18:32:01,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:32:01,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:32:01,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:32:01,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:32:01,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:32:01,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:32:01,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:32:01,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:32:01,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (1/1) ... [2022-12-13 18:32:01,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:32:01,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:01,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:01,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:32:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_sw [2022-12-13 18:32:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_sw [2022-12-13 18:32:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_file_remove [2022-12-13 18:32:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_file_remove [2022-12-13 18:32:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 18:32:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-12-13 18:32:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-12-13 18:32:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2022-12-13 18:32:01,419 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2022-12-13 18:32:01,419 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_find_numid [2022-12-13 18:32:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_find_numid [2022-12-13 18:32:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv [2022-12-13 18:32:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv [2022-12-13 18:32:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:32:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-12-13 18:32:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-12-13 18:32:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_input [2022-12-13 18:32:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_input [2022-12-13 18:32:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 18:32:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 18:32:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-12-13 18:32:01,420 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-12-13 18:32:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-12-13 18:32:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_test_id [2022-12-13 18:32:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_test_id [2022-12-13 18:32:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:32:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-12-13 18:32:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-12-13 18:32:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-12-13 18:32:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-12-13 18:32:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-12-13 18:32:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-12-13 18:32:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_vol [2022-12-13 18:32:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_vol [2022-12-13 18:32:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure snd_info_free_entry [2022-12-13 18:32:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_info_free_entry [2022-12-13 18:32:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-12-13 18:32:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-12-13 18:32:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-13 18:32:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-13 18:32:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_release [2022-12-13 18:32:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_release [2022-12-13 18:32:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 18:32:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv2 [2022-12-13 18:32:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv2 [2022-12-13 18:32:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv1 [2022-12-13 18:32:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv1 [2022-12-13 18:32:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-12-13 18:32:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-12-13 18:32:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-12-13 18:32:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-12-13 18:32:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure mixer_slot_clear [2022-12-13 18:32:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure mixer_slot_clear [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2022-12-13 18:32:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2022-12-13 18:32:01,423 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-12-13 18:32:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-12-13 18:32:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_ioctl1 [2022-12-13 18:32:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_ioctl1 [2022-12-13 18:32:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-12-13 18:32:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-12-13 18:32:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-12-13 18:32:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-12-13 18:32:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 18:32:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-12-13 18:32:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-12-13 18:32:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-12-13 18:32:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-12-13 18:32:01,424 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_sw [2022-12-13 18:32:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_sw [2022-12-13 18:32:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-12-13 18:32:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-12-13 18:32:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:32:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 18:32:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_test [2022-12-13 18:32:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_test [2022-12-13 18:32:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-12-13 18:32:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-12-13 18:32:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-12-13 18:32:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-12-13 18:32:01,425 INFO L130 BoogieDeclarations]: Found specification of procedure snd_oss_info_register [2022-12-13 18:32:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_oss_info_register [2022-12-13 18:32:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_vol [2022-12-13 18:32:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_vol [2022-12-13 18:32:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_notify_handler [2022-12-13 18:32:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_notify_handler [2022-12-13 18:32:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-12-13 18:32:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-12-13 18:32:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-12-13 18:32:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-12-13 18:32:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-12-13 18:32:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-12-13 18:32:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-12-13 18:32:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-12-13 18:32:01,426 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_open [2022-12-13 18:32:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_open [2022-12-13 18:32:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:32:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-12-13 18:32:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-12-13 18:32:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:32:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:32:01,803 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:32:01,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:32:11,731 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:32:11,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:32:11,745 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 18:32:11,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:32:11 BoogieIcfgContainer [2022-12-13 18:32:11,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:32:11,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:32:11,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:32:11,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:32:11,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:31:59" (1/3) ... [2022-12-13 18:32:11,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684fc487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:32:11, skipping insertion in model container [2022-12-13 18:32:11,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:01" (2/3) ... [2022-12-13 18:32:11,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684fc487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:32:11, skipping insertion in model container [2022-12-13 18:32:11,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:32:11" (3/3) ... [2022-12-13 18:32:11,756 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-12-13 18:32:11,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:32:11,774 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:32:11,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:32:11,852 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;@46bb47cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:32:11,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:32:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 1211 states, 908 states have (on average 1.4691629955947136) internal successors, (1334), 925 states have internal predecessors, (1334), 255 states have call successors, (255), 46 states have call predecessors, (255), 46 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2022-12-13 18:32:11,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 18:32:11,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:11,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:11,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1220371651, now seen corresponding path program 1 times [2022-12-13 18:32:11,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:11,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471072109] [2022-12-13 18:32:11,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:11,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:32:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471072109] [2022-12-13 18:32:12,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471072109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:12,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:12,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:32:12,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107537427] [2022-12-13 18:32:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:12,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:32:12,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:32:12,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:32:12,281 INFO L87 Difference]: Start difference. First operand has 1211 states, 908 states have (on average 1.4691629955947136) internal successors, (1334), 925 states have internal predecessors, (1334), 255 states have call successors, (255), 46 states have call predecessors, (255), 46 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:32:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:12,425 INFO L93 Difference]: Finished difference Result 2362 states and 3719 transitions. [2022-12-13 18:32:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:32:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-12-13 18:32:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:12,441 INFO L225 Difference]: With dead ends: 2362 [2022-12-13 18:32:12,442 INFO L226 Difference]: Without dead ends: 1152 [2022-12-13 18:32:12,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:32:12,454 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 5 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:12,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3463 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:32:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-12-13 18:32:12,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1147. [2022-12-13 18:32:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 855 states have (on average 1.4526315789473685) internal successors, (1242), 868 states have internal predecessors, (1242), 247 states have call successors, (247), 45 states have call predecessors, (247), 44 states have return successors, (244), 244 states have call predecessors, (244), 244 states have call successors, (244) [2022-12-13 18:32:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1733 transitions. [2022-12-13 18:32:12,538 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1733 transitions. Word has length 14 [2022-12-13 18:32:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:12,539 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1733 transitions. [2022-12-13 18:32:12,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:32:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1733 transitions. [2022-12-13 18:32:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 18:32:12,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:12,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:12,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:32:12,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash -128005074, now seen corresponding path program 1 times [2022-12-13 18:32:12,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:12,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835225420] [2022-12-13 18:32:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:12,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:32:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:12,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835225420] [2022-12-13 18:32:12,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835225420] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:32:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006401564] [2022-12-13 18:32:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:12,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:12,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:12,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:12,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:32:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:13,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:32:13,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:13,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:32:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:13,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006401564] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:32:13,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:32:13,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 18:32:13,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989939186] [2022-12-13 18:32:13,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:32:13,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:32:13,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:32:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:32:13,184 INFO L87 Difference]: Start difference. First operand 1147 states and 1733 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:32:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:13,412 INFO L93 Difference]: Finished difference Result 2300 states and 3477 transitions. [2022-12-13 18:32:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:32:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-13 18:32:13,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:13,422 INFO L225 Difference]: With dead ends: 2300 [2022-12-13 18:32:13,422 INFO L226 Difference]: Without dead ends: 1165 [2022-12-13 18:32:13,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:32:13,426 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 16 mSDsluCounter, 5178 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6909 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:13,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6909 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:32:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-12-13 18:32:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2022-12-13 18:32:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 870 states have (on average 1.4482758620689655) internal successors, (1260), 883 states have internal predecessors, (1260), 250 states have call successors, (250), 45 states have call predecessors, (250), 44 states have return successors, (247), 247 states have call predecessors, (247), 247 states have call successors, (247) [2022-12-13 18:32:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1757 transitions. [2022-12-13 18:32:13,482 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1757 transitions. Word has length 18 [2022-12-13 18:32:13,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:13,483 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1757 transitions. [2022-12-13 18:32:13,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:32:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1757 transitions. [2022-12-13 18:32:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 18:32:13,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:13,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:13,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:13,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:13,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:13,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1329590639, now seen corresponding path program 2 times [2022-12-13 18:32:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:13,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623010395] [2022-12-13 18:32:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:32:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 18:32:13,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:13,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623010395] [2022-12-13 18:32:13,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623010395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:13,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:13,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:32:13,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239018679] [2022-12-13 18:32:13,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:13,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:32:13,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:13,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:32:13,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:32:13,893 INFO L87 Difference]: Start difference. First operand 1165 states and 1757 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:32:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:14,009 INFO L93 Difference]: Finished difference Result 1170 states and 1761 transitions. [2022-12-13 18:32:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:32:14,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-12-13 18:32:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:14,014 INFO L225 Difference]: With dead ends: 1170 [2022-12-13 18:32:14,014 INFO L226 Difference]: Without dead ends: 1165 [2022-12-13 18:32:14,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:32:14,015 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 75 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:14,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 5096 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:32:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-12-13 18:32:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2022-12-13 18:32:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 870 states have (on average 1.4471264367816092) internal successors, (1259), 883 states have internal predecessors, (1259), 250 states have call successors, (250), 45 states have call predecessors, (250), 44 states have return successors, (247), 247 states have call predecessors, (247), 247 states have call successors, (247) [2022-12-13 18:32:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1756 transitions. [2022-12-13 18:32:14,045 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1756 transitions. Word has length 30 [2022-12-13 18:32:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:14,045 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1756 transitions. [2022-12-13 18:32:14,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:32:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1756 transitions. [2022-12-13 18:32:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 18:32:14,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:14,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:14,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:32:14,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:14,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1167211119, now seen corresponding path program 1 times [2022-12-13 18:32:14,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113140386] [2022-12-13 18:32:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:14,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:32:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:32:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 18:32:14,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:14,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113140386] [2022-12-13 18:32:14,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113140386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:14,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:14,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:32:14,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089093886] [2022-12-13 18:32:14,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:32:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:32:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:32:14,167 INFO L87 Difference]: Start difference. First operand 1165 states and 1756 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 18:32:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:14,234 INFO L93 Difference]: Finished difference Result 1177 states and 1770 transitions. [2022-12-13 18:32:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:32:14,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2022-12-13 18:32:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:14,241 INFO L225 Difference]: With dead ends: 1177 [2022-12-13 18:32:14,241 INFO L226 Difference]: Without dead ends: 1171 [2022-12-13 18:32:14,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:32:14,243 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 5 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:14,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3454 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:32:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-12-13 18:32:14,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1166. [2022-12-13 18:32:14,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 871 states have (on average 1.4466130884041333) internal successors, (1260), 884 states have internal predecessors, (1260), 250 states have call successors, (250), 45 states have call predecessors, (250), 44 states have return successors, (247), 247 states have call predecessors, (247), 247 states have call successors, (247) [2022-12-13 18:32:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1757 transitions. [2022-12-13 18:32:14,291 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1757 transitions. Word has length 38 [2022-12-13 18:32:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:14,291 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1757 transitions. [2022-12-13 18:32:14,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 18:32:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1757 transitions. [2022-12-13 18:32:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 18:32:14,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:14,293 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-12-13 18:32:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:32:14,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:14,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:14,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1667737210, now seen corresponding path program 1 times [2022-12-13 18:32:14,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:14,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957609945] [2022-12-13 18:32:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:14,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:14,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:32:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:32:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 18:32:14,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:14,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957609945] [2022-12-13 18:32:14,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957609945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:14,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:14,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:32:14,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423462019] [2022-12-13 18:32:14,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:32:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:32:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:32:14,476 INFO L87 Difference]: Start difference. First operand 1166 states and 1757 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 18:32:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:14,805 INFO L93 Difference]: Finished difference Result 1961 states and 2990 transitions. [2022-12-13 18:32:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:32:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2022-12-13 18:32:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:14,813 INFO L225 Difference]: With dead ends: 1961 [2022-12-13 18:32:14,813 INFO L226 Difference]: Without dead ends: 1954 [2022-12-13 18:32:14,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:32:14,815 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 1141 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:14,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 3577 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:32:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-12-13 18:32:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1952. [2022-12-13 18:32:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1500 states have (on average 1.46) internal successors, (2190), 1522 states have internal predecessors, (2190), 376 states have call successors, (376), 78 states have call predecessors, (376), 75 states have return successors, (414), 366 states have call predecessors, (414), 373 states have call successors, (414) [2022-12-13 18:32:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2980 transitions. [2022-12-13 18:32:14,878 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2980 transitions. Word has length 42 [2022-12-13 18:32:14,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:14,878 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2980 transitions. [2022-12-13 18:32:14,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 18:32:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2980 transitions. [2022-12-13 18:32:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 18:32:14,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:14,883 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-12-13 18:32:14,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:32:14,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:14,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:14,884 INFO L85 PathProgramCache]: Analyzing trace with hash 886972045, now seen corresponding path program 1 times [2022-12-13 18:32:14,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:14,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30474106] [2022-12-13 18:32:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:14,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:32:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:32:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 18:32:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 18:32:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:32:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 18:32:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 18:32:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:32:15,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:15,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30474106] [2022-12-13 18:32:15,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30474106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:15,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:15,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:32:15,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655008705] [2022-12-13 18:32:15,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:15,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:32:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:15,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:32:15,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:32:15,712 INFO L87 Difference]: Start difference. First operand 1952 states and 2980 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:32:18,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:32:33,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:33,475 INFO L93 Difference]: Finished difference Result 4564 states and 7241 transitions. [2022-12-13 18:32:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:32:33,476 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2022-12-13 18:32:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:33,490 INFO L225 Difference]: With dead ends: 4564 [2022-12-13 18:32:33,490 INFO L226 Difference]: Without dead ends: 2667 [2022-12-13 18:32:33,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:32:33,497 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 2744 mSDsluCounter, 8635 mSDsCounter, 0 mSdLazyCounter, 5233 mSolverCounterSat, 1042 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 10064 SdHoareTripleChecker+Invalid, 6276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 5233 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:33,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 10064 Invalid, 6276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1042 Valid, 5233 Invalid, 1 Unknown, 0 Unchecked, 16.6s Time] [2022-12-13 18:32:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-12-13 18:32:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2191. [2022-12-13 18:32:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1690 states have (on average 1.4497041420118344) internal successors, (2450), 1710 states have internal predecessors, (2450), 415 states have call successors, (415), 78 states have call predecessors, (415), 85 states have return successors, (531), 417 states have call predecessors, (531), 412 states have call successors, (531) [2022-12-13 18:32:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 3396 transitions. [2022-12-13 18:32:33,612 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 3396 transitions. Word has length 88 [2022-12-13 18:32:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:33,613 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 3396 transitions. [2022-12-13 18:32:33,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:32:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 3396 transitions. [2022-12-13 18:32:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 18:32:33,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:33,618 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-12-13 18:32:33,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:32:33,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash 306830254, now seen corresponding path program 1 times [2022-12-13 18:32:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:33,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494586476] [2022-12-13 18:32:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:33,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:32:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:33,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:32:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 18:32:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 18:32:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:32:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:32:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:32:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:32:34,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:34,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494586476] [2022-12-13 18:32:34,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494586476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:32:34,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192308904] [2022-12-13 18:32:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:34,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:34,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:34,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:34,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:32:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:34,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:32:34,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:32:34,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:32:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:32:34,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192308904] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:32:34,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:32:34,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2022-12-13 18:32:34,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172709373] [2022-12-13 18:32:34,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:32:34,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:32:34,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:32:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:32:34,915 INFO L87 Difference]: Start difference. First operand 2191 states and 3396 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 13 states have internal predecessors, (105), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:32:38,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:32:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:51,924 INFO L93 Difference]: Finished difference Result 4871 states and 7765 transitions. [2022-12-13 18:32:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:32:51,925 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 13 states have internal predecessors, (105), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 87 [2022-12-13 18:32:51,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:51,936 INFO L225 Difference]: With dead ends: 4871 [2022-12-13 18:32:51,937 INFO L226 Difference]: Without dead ends: 2731 [2022-12-13 18:32:51,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:32:51,944 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 1802 mSDsluCounter, 6655 mSDsCounter, 0 mSdLazyCounter, 4769 mSolverCounterSat, 884 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 8105 SdHoareTripleChecker+Invalid, 5654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 4769 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:51,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 8105 Invalid, 5654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [884 Valid, 4769 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2022-12-13 18:32:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2022-12-13 18:32:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2263. [2022-12-13 18:32:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1750 states have (on average 1.441142857142857) internal successors, (2522), 1770 states have internal predecessors, (2522), 427 states have call successors, (427), 78 states have call predecessors, (427), 85 states have return successors, (555), 429 states have call predecessors, (555), 424 states have call successors, (555) [2022-12-13 18:32:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3504 transitions. [2022-12-13 18:32:52,030 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3504 transitions. Word has length 87 [2022-12-13 18:32:52,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:52,030 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 3504 transitions. [2022-12-13 18:32:52,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 13 states have internal predecessors, (105), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:32:52,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3504 transitions. [2022-12-13 18:32:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 18:32:52,034 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:52,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:52,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:32:52,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:52,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1052631877, now seen corresponding path program 1 times [2022-12-13 18:32:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:52,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443914933] [2022-12-13 18:32:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:52,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:52,304 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:32:52,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188387060] [2022-12-13 18:32:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:52,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:52,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:52,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:32:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:52,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 3210 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:32:52,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 18:32:52,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:32:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443914933] [2022-12-13 18:32:52,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:32:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188387060] [2022-12-13 18:32:52,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188387060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:52,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:52,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:32:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785161796] [2022-12-13 18:32:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:32:52,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:52,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:32:52,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:32:52,986 INFO L87 Difference]: Start difference. First operand 2263 states and 3504 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 18:32:55,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:32:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:55,091 INFO L93 Difference]: Finished difference Result 4521 states and 7051 transitions. [2022-12-13 18:32:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:32:55,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-12-13 18:32:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:55,212 INFO L225 Difference]: With dead ends: 4521 [2022-12-13 18:32:55,212 INFO L226 Difference]: Without dead ends: 2267 [2022-12-13 18:32:55,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:32:55,228 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 1 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:55,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3455 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 18:32:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-12-13 18:32:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2265. [2022-12-13 18:32:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1752 states have (on average 1.4406392694063928) internal successors, (2524), 1772 states have internal predecessors, (2524), 427 states have call successors, (427), 78 states have call predecessors, (427), 85 states have return successors, (555), 429 states have call predecessors, (555), 424 states have call successors, (555) [2022-12-13 18:32:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3506 transitions. [2022-12-13 18:32:55,328 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3506 transitions. Word has length 96 [2022-12-13 18:32:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:55,328 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 3506 transitions. [2022-12-13 18:32:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 18:32:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3506 transitions. [2022-12-13 18:32:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 18:32:55,330 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:55,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:55,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:32:55,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 18:32:55,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash -656831895, now seen corresponding path program 1 times [2022-12-13 18:32:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:55,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556678072] [2022-12-13 18:32:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:55,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:55,622 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:32:55,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706373198] [2022-12-13 18:32:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:55,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:55,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:55,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:55,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:32:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 3225 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:32:56,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 18:32:56,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:32:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 18:32:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:56,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556678072] [2022-12-13 18:32:56,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:32:56,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706373198] [2022-12-13 18:32:56,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706373198] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:32:56,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:32:56,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 18:32:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932732493] [2022-12-13 18:32:56,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:32:56,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:32:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:32:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:32:56,466 INFO L87 Difference]: Start difference. First operand 2265 states and 3506 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 18:32:58,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:00,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:02,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:02,798 INFO L93 Difference]: Finished difference Result 4533 states and 7067 transitions. [2022-12-13 18:33:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:33:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 98 [2022-12-13 18:33:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:02,872 INFO L225 Difference]: With dead ends: 4533 [2022-12-13 18:33:02,872 INFO L226 Difference]: Without dead ends: 2277 [2022-12-13 18:33:02,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:33:02,881 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 2 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:02,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3455 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 18:33:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-12-13 18:33:02,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2277. [2022-12-13 18:33:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1764 states have (on average 1.437641723356009) internal successors, (2536), 1784 states have internal predecessors, (2536), 427 states have call successors, (427), 78 states have call predecessors, (427), 85 states have return successors, (555), 429 states have call predecessors, (555), 424 states have call successors, (555) [2022-12-13 18:33:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3518 transitions. [2022-12-13 18:33:02,950 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3518 transitions. Word has length 98 [2022-12-13 18:33:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:02,950 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 3518 transitions. [2022-12-13 18:33:02,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 18:33:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3518 transitions. [2022-12-13 18:33:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 18:33:02,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:02,953 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:02,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:33:03,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:03,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:03,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:03,156 INFO L85 PathProgramCache]: Analyzing trace with hash -902837078, now seen corresponding path program 1 times [2022-12-13 18:33:03,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:03,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402380212] [2022-12-13 18:33:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:03,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:03,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94407280] [2022-12-13 18:33:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:03,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:03,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:03,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:03,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:33:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:04,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 3261 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:33:04,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 18:33:04,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 18:33:04,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:04,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402380212] [2022-12-13 18:33:04,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:04,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94407280] [2022-12-13 18:33:04,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94407280] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:04,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:33:04,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 18:33:04,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539501517] [2022-12-13 18:33:04,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:04,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:33:04,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:04,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:33:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:33:04,476 INFO L87 Difference]: Start difference. First operand 2277 states and 3518 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 18:33:06,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:08,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:10,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:12,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:13,001 INFO L93 Difference]: Finished difference Result 4569 states and 7109 transitions. [2022-12-13 18:33:13,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:33:13,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-12-13 18:33:13,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:13,025 INFO L225 Difference]: With dead ends: 4569 [2022-12-13 18:33:13,025 INFO L226 Difference]: Without dead ends: 2301 [2022-12-13 18:33:13,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:33:13,053 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 2 mSDsluCounter, 6904 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8633 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:13,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8633 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 8.4s Time] [2022-12-13 18:33:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2022-12-13 18:33:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2301. [2022-12-13 18:33:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 1788 states have (on average 1.4317673378076063) internal successors, (2560), 1808 states have internal predecessors, (2560), 427 states have call successors, (427), 78 states have call predecessors, (427), 85 states have return successors, (555), 429 states have call predecessors, (555), 424 states have call successors, (555) [2022-12-13 18:33:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3542 transitions. [2022-12-13 18:33:13,161 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3542 transitions. Word has length 100 [2022-12-13 18:33:13,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:13,161 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3542 transitions. [2022-12-13 18:33:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 18:33:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3542 transitions. [2022-12-13 18:33:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 18:33:13,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:13,166 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:13,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:33:13,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:13,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2014485075, now seen corresponding path program 2 times [2022-12-13 18:33:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:13,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529936428] [2022-12-13 18:33:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:13,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:13,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:13,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996803903] [2022-12-13 18:33:13,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:33:13,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:13,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:13,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:13,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:33:18,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:33:18,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:18,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:33:18,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-12-13 18:33:18,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:33:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:18,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529936428] [2022-12-13 18:33:18,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:18,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996803903] [2022-12-13 18:33:18,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996803903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:18,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:18,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:33:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339582396] [2022-12-13 18:33:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:18,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:33:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:33:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:33:18,169 INFO L87 Difference]: Start difference. First operand 2301 states and 3542 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 18:33:20,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:20,553 INFO L93 Difference]: Finished difference Result 4601 states and 7152 transitions. [2022-12-13 18:33:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:33:20,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2022-12-13 18:33:20,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:20,561 INFO L225 Difference]: With dead ends: 4601 [2022-12-13 18:33:20,561 INFO L226 Difference]: Without dead ends: 2309 [2022-12-13 18:33:20,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:33:20,569 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 5 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:20,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5177 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 18:33:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2022-12-13 18:33:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2305. [2022-12-13 18:33:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1792 states have (on average 1.4308035714285714) internal successors, (2564), 1812 states have internal predecessors, (2564), 427 states have call successors, (427), 78 states have call predecessors, (427), 85 states have return successors, (555), 429 states have call predecessors, (555), 424 states have call successors, (555) [2022-12-13 18:33:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3546 transitions. [2022-12-13 18:33:20,636 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3546 transitions. Word has length 116 [2022-12-13 18:33:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:20,637 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3546 transitions. [2022-12-13 18:33:20,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 18:33:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3546 transitions. [2022-12-13 18:33:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 18:33:20,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:20,640 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2022-12-13 18:33:20,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:33:20,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 18:33:20,841 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:20,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -26159701, now seen corresponding path program 1 times [2022-12-13 18:33:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:20,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922547974] [2022-12-13 18:33:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:20,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:33:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 18:33:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:33:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:33:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 18:33:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:33:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:33:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:21,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:21,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922547974] [2022-12-13 18:33:21,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922547974] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:21,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667826205] [2022-12-13 18:33:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:21,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:21,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:21,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:21,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:33:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:22,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:33:22,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:33:22,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:23,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667826205] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:23,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:33:23,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 27 [2022-12-13 18:33:23,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554423700] [2022-12-13 18:33:23,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:23,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 18:33:23,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 18:33:23,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:33:23,773 INFO L87 Difference]: Start difference. First operand 2305 states and 3546 transitions. Second operand has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 25 states have internal predecessors, (159), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:33:27,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:46,572 INFO L93 Difference]: Finished difference Result 5099 states and 8077 transitions. [2022-12-13 18:33:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 18:33:46,574 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 25 states have internal predecessors, (159), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2022-12-13 18:33:46,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:46,596 INFO L225 Difference]: With dead ends: 5099 [2022-12-13 18:33:46,596 INFO L226 Difference]: Without dead ends: 2917 [2022-12-13 18:33:46,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:33:46,605 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 1869 mSDsluCounter, 6805 mSDsCounter, 0 mSdLazyCounter, 4879 mSolverCounterSat, 959 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 8297 SdHoareTripleChecker+Invalid, 5839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 4879 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:46,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2002 Valid, 8297 Invalid, 5839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [959 Valid, 4879 Invalid, 1 Unknown, 0 Unchecked, 22.3s Time] [2022-12-13 18:33:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-12-13 18:33:46,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2449. [2022-12-13 18:33:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 1912 states have (on average 1.4163179916317992) internal successors, (2708), 1932 states have internal predecessors, (2708), 451 states have call successors, (451), 78 states have call predecessors, (451), 85 states have return successors, (603), 453 states have call predecessors, (603), 448 states have call successors, (603) [2022-12-13 18:33:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3762 transitions. [2022-12-13 18:33:46,714 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3762 transitions. Word has length 117 [2022-12-13 18:33:46,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:46,715 INFO L495 AbstractCegarLoop]: Abstraction has 2449 states and 3762 transitions. [2022-12-13 18:33:46,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 25 states have internal predecessors, (159), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:33:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3762 transitions. [2022-12-13 18:33:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 18:33:46,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:46,718 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:46,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 18:33:46,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 18:33:46,919 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:46,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1703323564, now seen corresponding path program 1 times [2022-12-13 18:33:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:46,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288791267] [2022-12-13 18:33:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:47,030 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:47,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207881635] [2022-12-13 18:33:47,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:47,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:47,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:47,031 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:47,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:33:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:47,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 3423 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:33:47,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 18:33:48,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 18:33:49,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288791267] [2022-12-13 18:33:49,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207881635] [2022-12-13 18:33:49,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207881635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:49,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:33:49,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 18:33:49,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548782622] [2022-12-13 18:33:49,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:49,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 18:33:49,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 18:33:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:33:49,331 INFO L87 Difference]: Start difference. First operand 2449 states and 3762 transitions. Second operand has 24 states, 24 states have (on average 5.375) internal successors, (129), 24 states have internal predecessors, (129), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 18:33:51,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:53,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:55,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:57,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:33:59,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:34:02,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:34:04,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:34:06,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:34:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:06,399 INFO L93 Difference]: Finished difference Result 4937 states and 7681 transitions. [2022-12-13 18:34:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 18:34:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.375) internal successors, (129), 24 states have internal predecessors, (129), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2022-12-13 18:34:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:06,449 INFO L225 Difference]: With dead ends: 4937 [2022-12-13 18:34:06,450 INFO L226 Difference]: Without dead ends: 2497 [2022-12-13 18:34:06,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:34:06,459 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 2 mSDsluCounter, 6904 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8633 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:06,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8633 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 8 Unknown, 0 Unchecked, 17.0s Time] [2022-12-13 18:34:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2022-12-13 18:34:06,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2497. [2022-12-13 18:34:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 1960 states have (on average 1.4061224489795918) internal successors, (2756), 1980 states have internal predecessors, (2756), 451 states have call successors, (451), 78 states have call predecessors, (451), 85 states have return successors, (603), 453 states have call predecessors, (603), 448 states have call successors, (603) [2022-12-13 18:34:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3810 transitions. [2022-12-13 18:34:06,536 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3810 transitions. Word has length 135 [2022-12-13 18:34:06,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:06,537 INFO L495 AbstractCegarLoop]: Abstraction has 2497 states and 3810 transitions. [2022-12-13 18:34:06,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.375) internal successors, (129), 24 states have internal predecessors, (129), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 18:34:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3810 transitions. [2022-12-13 18:34:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 18:34:06,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:06,542 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:06,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:34:06,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 18:34:06,742 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:06,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1615490085, now seen corresponding path program 1 times [2022-12-13 18:34:06,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:06,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320997282] [2022-12-13 18:34:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:06,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:06,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:34:06,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641283897] [2022-12-13 18:34:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:06,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:06,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:34:06,834 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:34:06,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:34:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:07,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 3576 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 18:34:07,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:34:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 4 proven. 484 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 18:34:09,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:34:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:34:11,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:11,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320997282] [2022-12-13 18:34:11,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:34:11,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641283897] [2022-12-13 18:34:11,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641283897] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:34:11,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:34:11,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 34 [2022-12-13 18:34:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832303472] [2022-12-13 18:34:11,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:34:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 18:34:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 18:34:11,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:34:11,358 INFO L87 Difference]: Start difference. First operand 2497 states and 3810 transitions. Second operand has 34 states, 34 states have (on average 4.382352941176471) internal successors, (149), 34 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 18:34:13,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:34:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:13,755 INFO L93 Difference]: Finished difference Result 5025 states and 7765 transitions. [2022-12-13 18:34:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 18:34:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.382352941176471) internal successors, (149), 34 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 147 [2022-12-13 18:34:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:13,873 INFO L225 Difference]: With dead ends: 5025 [2022-12-13 18:34:13,873 INFO L226 Difference]: Without dead ends: 2537 [2022-12-13 18:34:13,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 246 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:34:13,883 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 1 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:13,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3455 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 18:34:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-12-13 18:34:13,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2537. [2022-12-13 18:34:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2000 states have (on average 1.398) internal successors, (2796), 2020 states have internal predecessors, (2796), 451 states have call successors, (451), 78 states have call predecessors, (451), 85 states have return successors, (603), 453 states have call predecessors, (603), 448 states have call successors, (603) [2022-12-13 18:34:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3850 transitions. [2022-12-13 18:34:13,956 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3850 transitions. Word has length 147 [2022-12-13 18:34:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:13,956 INFO L495 AbstractCegarLoop]: Abstraction has 2537 states and 3850 transitions. [2022-12-13 18:34:13,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.382352941176471) internal successors, (149), 34 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 18:34:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3850 transitions. [2022-12-13 18:34:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 18:34:13,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:13,960 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 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] [2022-12-13 18:34:13,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:34:14,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 18:34:14,162 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:14,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:14,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1261461912, now seen corresponding path program 2 times [2022-12-13 18:34:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:14,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233760052] [2022-12-13 18:34:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:14,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:34:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:34:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 18:34:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 18:34:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:34:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 18:34:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 18:34:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:16,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:34:16,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233760052] [2022-12-13 18:34:16,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233760052] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:34:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773125611] [2022-12-13 18:34:16,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:34:16,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:16,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:34:16,187 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:34:16,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:34:16,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:34:16,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:34:16,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:34:16,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:34:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2022-12-13 18:34:18,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:34:18,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773125611] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:18,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:34:18,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [27] total 31 [2022-12-13 18:34:18,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166478938] [2022-12-13 18:34:18,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:18,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:34:18,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:34:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:34:18,316 INFO L87 Difference]: Start difference. First operand 2537 states and 3850 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:34:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:29,979 INFO L93 Difference]: Finished difference Result 2887 states and 4371 transitions. [2022-12-13 18:34:29,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:34:29,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 159 [2022-12-13 18:34:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:29,991 INFO L225 Difference]: With dead ends: 2887 [2022-12-13 18:34:29,991 INFO L226 Difference]: Without dead ends: 2884 [2022-12-13 18:34:29,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:34:29,992 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 3596 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 1158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3663 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1158 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:29,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3663 Valid, 3339 Invalid, 3810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1158 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-12-13 18:34:29,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-12-13 18:34:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2877. [2022-12-13 18:34:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2263 states have (on average 1.4078656650463985) internal successors, (3186), 2290 states have internal predecessors, (3186), 507 states have call successors, (507), 100 states have call predecessors, (507), 106 states have return successors, (667), 506 states have call predecessors, (667), 504 states have call successors, (667) [2022-12-13 18:34:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4360 transitions. [2022-12-13 18:34:30,082 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4360 transitions. Word has length 159 [2022-12-13 18:34:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:30,083 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 4360 transitions. [2022-12-13 18:34:30,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:34:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4360 transitions. [2022-12-13 18:34:30,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 18:34:30,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:30,088 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 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] [2022-12-13 18:34:30,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 18:34:30,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 18:34:30,288 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:30,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:30,289 INFO L85 PathProgramCache]: Analyzing trace with hash 649970813, now seen corresponding path program 1 times [2022-12-13 18:34:30,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:30,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704908121] [2022-12-13 18:34:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:30,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:34:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:34:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 18:34:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 18:34:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:34:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:34:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:34:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:34:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:34:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2022-12-13 18:34:30,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:30,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704908121] [2022-12-13 18:34:30,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704908121] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:34:30,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471237111] [2022-12-13 18:34:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:30,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:30,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:34:30,609 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:34:30,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:34:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:31,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:34:31,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:34:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2022-12-13 18:34:32,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:34:32,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471237111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:32,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:34:32,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-12-13 18:34:32,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450110091] [2022-12-13 18:34:32,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:32,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:34:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:32,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:34:32,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:34:32,705 INFO L87 Difference]: Start difference. First operand 2877 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 18:34:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:32,831 INFO L93 Difference]: Finished difference Result 2879 states and 4361 transitions. [2022-12-13 18:34:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:34:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 178 [2022-12-13 18:34:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:32,839 INFO L225 Difference]: With dead ends: 2879 [2022-12-13 18:34:32,839 INFO L226 Difference]: Without dead ends: 2876 [2022-12-13 18:34:32,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:34:32,840 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 1642 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:32,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 1727 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:34:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2022-12-13 18:34:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2864. [2022-12-13 18:34:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2259 states have (on average 1.4081451969898184) internal successors, (3181), 2280 states have internal predecessors, (3181), 498 states have call successors, (498), 98 states have call predecessors, (498), 106 states have return successors, (659), 505 states have call predecessors, (659), 496 states have call successors, (659) [2022-12-13 18:34:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4338 transitions. [2022-12-13 18:34:32,932 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4338 transitions. Word has length 178 [2022-12-13 18:34:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:32,932 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 4338 transitions. [2022-12-13 18:34:32,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 18:34:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4338 transitions. [2022-12-13 18:34:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-12-13 18:34:32,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:32,940 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:32,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:34:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:34:33,140 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:33,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -291267803, now seen corresponding path program 1 times [2022-12-13 18:34:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:33,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937789416] [2022-12-13 18:34:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:33,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:34:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:34:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 18:34:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:34:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:34:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:34:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:34:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:34:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:34:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:34:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:34:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-12-13 18:34:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2022-12-13 18:34:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937789416] [2022-12-13 18:34:33,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937789416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:33,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:34:33,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:34:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725672618] [2022-12-13 18:34:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:33,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:34:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:34:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:34:33,492 INFO L87 Difference]: Start difference. First operand 2864 states and 4338 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:34:36,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:34:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:48,186 INFO L93 Difference]: Finished difference Result 6193 states and 9721 transitions. [2022-12-13 18:34:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:34:48,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 218 [2022-12-13 18:34:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:48,201 INFO L225 Difference]: With dead ends: 6193 [2022-12-13 18:34:48,201 INFO L226 Difference]: Without dead ends: 3600 [2022-12-13 18:34:48,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:34:48,208 INFO L413 NwaCegarLoop]: 1410 mSDtfsCounter, 1780 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 857 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 4164 SdHoareTripleChecker+Invalid, 3567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:48,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 4164 Invalid, 3567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [857 Valid, 2709 Invalid, 1 Unknown, 0 Unchecked, 14.2s Time] [2022-12-13 18:34:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2022-12-13 18:34:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 2864. [2022-12-13 18:34:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2259 states have (on average 1.4054891544931385) internal successors, (3175), 2280 states have internal predecessors, (3175), 498 states have call successors, (498), 98 states have call predecessors, (498), 106 states have return successors, (659), 505 states have call predecessors, (659), 496 states have call successors, (659) [2022-12-13 18:34:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4332 transitions. [2022-12-13 18:34:48,318 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4332 transitions. Word has length 218 [2022-12-13 18:34:48,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:48,319 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 4332 transitions. [2022-12-13 18:34:48,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:34:48,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4332 transitions. [2022-12-13 18:34:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-13 18:34:48,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:48,326 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:48,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:34:48,326 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:48,327 INFO L85 PathProgramCache]: Analyzing trace with hash -570559552, now seen corresponding path program 1 times [2022-12-13 18:34:48,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:48,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988585480] [2022-12-13 18:34:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:48,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:34:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:48,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:34:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 18:34:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:34:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:34:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:34:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:34:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:34:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:34:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:34:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:34:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-12-13 18:34:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-12-13 18:34:49,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:49,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988585480] [2022-12-13 18:34:49,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988585480] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:34:49,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58265264] [2022-12-13 18:34:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:49,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:49,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:34:49,182 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:34:49,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:34:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:50,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:34:50,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:34:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2022-12-13 18:34:50,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:34:50,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58265264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:50,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:34:50,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-12-13 18:34:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719278404] [2022-12-13 18:34:50,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:50,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:34:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:34:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:34:50,017 INFO L87 Difference]: Start difference. First operand 2864 states and 4332 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:34:50,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:50,167 INFO L93 Difference]: Finished difference Result 5517 states and 8361 transitions. [2022-12-13 18:34:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:34:50,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 220 [2022-12-13 18:34:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:50,184 INFO L225 Difference]: With dead ends: 5517 [2022-12-13 18:34:50,184 INFO L226 Difference]: Without dead ends: 2924 [2022-12-13 18:34:50,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:34:50,189 INFO L413 NwaCegarLoop]: 1725 mSDtfsCounter, 19 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:50,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3440 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:34:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2022-12-13 18:34:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2870. [2022-12-13 18:34:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2265 states have (on average 1.4044150110375275) internal successors, (3181), 2286 states have internal predecessors, (3181), 498 states have call successors, (498), 98 states have call predecessors, (498), 106 states have return successors, (659), 505 states have call predecessors, (659), 496 states have call successors, (659) [2022-12-13 18:34:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4338 transitions. [2022-12-13 18:34:50,292 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4338 transitions. Word has length 220 [2022-12-13 18:34:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:50,292 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 4338 transitions. [2022-12-13 18:34:50,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:34:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4338 transitions. [2022-12-13 18:34:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-12-13 18:34:50,299 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:50,299 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:50,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:34:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 18:34:50,500 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash -229116027, now seen corresponding path program 1 times [2022-12-13 18:34:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:50,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53946116] [2022-12-13 18:34:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:34:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:34:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 18:34:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:34:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:34:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:34:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:34:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:34:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:34:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:34:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:34:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-12-13 18:34:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-12-13 18:34:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53946116] [2022-12-13 18:34:51,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53946116] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:34:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555047726] [2022-12-13 18:34:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:51,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:51,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:34:51,400 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:34:51,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 18:34:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:51,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2276 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 18:34:51,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:34:55,272 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 4 proven. 946 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:34:55,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:34:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 18:34:59,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555047726] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:34:59,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:34:59,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 25, 25] total 43 [2022-12-13 18:34:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603544175] [2022-12-13 18:34:59,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:34:59,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 18:34:59,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:59,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 18:34:59,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=1224, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 18:34:59,472 INFO L87 Difference]: Start difference. First operand 2870 states and 4338 transitions. Second operand has 43 states, 42 states have (on average 7.880952380952381) internal successors, (331), 39 states have internal predecessors, (331), 3 states have call successors, (39), 5 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-12-13 18:35:05,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:35:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:41,624 INFO L93 Difference]: Finished difference Result 6361 states and 9938 transitions. [2022-12-13 18:35:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 18:35:41,625 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 7.880952380952381) internal successors, (331), 39 states have internal predecessors, (331), 3 states have call successors, (39), 5 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 224 [2022-12-13 18:35:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:41,638 INFO L225 Difference]: With dead ends: 6361 [2022-12-13 18:35:41,638 INFO L226 Difference]: Without dead ends: 3758 [2022-12-13 18:35:41,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 440 SyntacticMatches, 14 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=682, Invalid=2398, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 18:35:41,646 INFO L413 NwaCegarLoop]: 1460 mSDtfsCounter, 3993 mSDsluCounter, 12515 mSDsCounter, 0 mSdLazyCounter, 8695 mSolverCounterSat, 1682 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 13975 SdHoareTripleChecker+Invalid, 10378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1682 IncrementalHoareTripleChecker+Valid, 8695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:35:41,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 13975 Invalid, 10378 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1682 Valid, 8695 Invalid, 1 Unknown, 0 Unchecked, 38.5s Time] [2022-12-13 18:35:41,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-12-13 18:35:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3050. [2022-12-13 18:35:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3050 states, 2416 states have (on average 1.3923841059602649) internal successors, (3364), 2437 states have internal predecessors, (3364), 527 states have call successors, (527), 98 states have call predecessors, (527), 106 states have return successors, (717), 534 states have call predecessors, (717), 525 states have call successors, (717) [2022-12-13 18:35:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 4608 transitions. [2022-12-13 18:35:41,777 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 4608 transitions. Word has length 224 [2022-12-13 18:35:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:35:41,777 INFO L495 AbstractCegarLoop]: Abstraction has 3050 states and 4608 transitions. [2022-12-13 18:35:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 7.880952380952381) internal successors, (331), 39 states have internal predecessors, (331), 3 states have call successors, (39), 5 states have call predecessors, (39), 3 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-12-13 18:35:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 4608 transitions. [2022-12-13 18:35:41,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-12-13 18:35:41,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:35:41,787 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:35:41,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 18:35:41,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:35:41,989 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:35:41,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:35:41,990 INFO L85 PathProgramCache]: Analyzing trace with hash -736395826, now seen corresponding path program 1 times [2022-12-13 18:35:41,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:35:41,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848912342] [2022-12-13 18:35:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:41,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:35:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:42,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:35:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:35:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:42,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:35:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:35:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:42,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:35:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:35:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:35:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:35:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:35:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:35:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:35:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-12-13 18:35:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2022-12-13 18:35:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:35:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848912342] [2022-12-13 18:35:43,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848912342] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:35:43,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409635165] [2022-12-13 18:35:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:43,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:35:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:35:43,463 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:35:43,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 18:35:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:44,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 2355 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:35:44,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:35:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2022 trivial. 0 not checked. [2022-12-13 18:35:44,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:35:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2026 trivial. 0 not checked. [2022-12-13 18:35:44,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409635165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:35:44,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:35:44,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 16 [2022-12-13 18:35:44,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131086406] [2022-12-13 18:35:44,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:35:44,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 18:35:44,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:35:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:35:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:35:44,621 INFO L87 Difference]: Start difference. First operand 3050 states and 4608 transitions. Second operand has 16 states, 15 states have (on average 9.266666666666667) internal successors, (139), 12 states have internal predecessors, (139), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-12-13 18:35:50,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:35:52,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:35:54,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:35:57,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:36:32,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:36:34,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:36:36,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:36:53,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:36:53,313 INFO L93 Difference]: Finished difference Result 6720 states and 10743 transitions. [2022-12-13 18:36:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 18:36:53,314 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.266666666666667) internal successors, (139), 12 states have internal predecessors, (139), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 255 [2022-12-13 18:36:53,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:36:53,328 INFO L225 Difference]: With dead ends: 6720 [2022-12-13 18:36:53,328 INFO L226 Difference]: Without dead ends: 4061 [2022-12-13 18:36:53,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 18:36:53,336 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 4026 mSDsluCounter, 13442 mSDsCounter, 0 mSdLazyCounter, 11917 mSolverCounterSat, 1569 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4114 SdHoareTripleChecker+Valid, 14779 SdHoareTripleChecker+Invalid, 13493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1569 IncrementalHoareTripleChecker+Valid, 11917 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:36:53,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4114 Valid, 14779 Invalid, 13493 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1569 Valid, 11917 Invalid, 7 Unknown, 0 Unchecked, 64.8s Time] [2022-12-13 18:36:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2022-12-13 18:36:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3137. [2022-12-13 18:36:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3137 states, 2487 states have (on average 1.3892239646160032) internal successors, (3455), 2507 states have internal predecessors, (3455), 540 states have call successors, (540), 98 states have call predecessors, (540), 109 states have return successors, (772), 551 states have call predecessors, (772), 538 states have call successors, (772) [2022-12-13 18:36:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 4767 transitions. [2022-12-13 18:36:53,489 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 4767 transitions. Word has length 255 [2022-12-13 18:36:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:36:53,489 INFO L495 AbstractCegarLoop]: Abstraction has 3137 states and 4767 transitions. [2022-12-13 18:36:53,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.266666666666667) internal successors, (139), 12 states have internal predecessors, (139), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-12-13 18:36:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 4767 transitions. [2022-12-13 18:36:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-12-13 18:36:53,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:36:53,500 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:36:53,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 18:36:53,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:53,701 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:36:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1141670966, now seen corresponding path program 1 times [2022-12-13 18:36:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:53,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777936077] [2022-12-13 18:36:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:36:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:53,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:36:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:36:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:36:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 18:36:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:36:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:36:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:36:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:36:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:36:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:36:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-12-13 18:36:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2055 trivial. 0 not checked. [2022-12-13 18:36:54,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:54,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777936077] [2022-12-13 18:36:54,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777936077] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:36:54,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292156118] [2022-12-13 18:36:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:54,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:54,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:36:54,169 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:36:54,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 18:36:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:54,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 2388 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:36:54,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:36:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 2022 trivial. 0 not checked. [2022-12-13 18:36:55,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:36:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 2026 trivial. 0 not checked. [2022-12-13 18:36:55,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292156118] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:36:55,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:36:55,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 18:36:55,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89983761] [2022-12-13 18:36:55,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:36:55,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:36:55,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:55,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:36:55,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:36:55,696 INFO L87 Difference]: Start difference. First operand 3137 states and 4767 transitions. Second operand has 17 states, 17 states have (on average 9.411764705882353) internal successors, (160), 14 states have internal predecessors, (160), 4 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 18:36:59,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:37:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:37:18,953 INFO L93 Difference]: Finished difference Result 6696 states and 10511 transitions. [2022-12-13 18:37:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 18:37:18,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.411764705882353) internal successors, (160), 14 states have internal predecessors, (160), 4 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 267 [2022-12-13 18:37:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:37:18,970 INFO L225 Difference]: With dead ends: 6696 [2022-12-13 18:37:18,970 INFO L226 Difference]: Without dead ends: 3950 [2022-12-13 18:37:18,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:37:18,979 INFO L413 NwaCegarLoop]: 1402 mSDtfsCounter, 1982 mSDsluCounter, 5369 mSDsCounter, 0 mSdLazyCounter, 4556 mSolverCounterSat, 919 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 6771 SdHoareTripleChecker+Invalid, 5476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 4556 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:37:18,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 6771 Invalid, 5476 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [919 Valid, 4556 Invalid, 1 Unknown, 0 Unchecked, 22.1s Time] [2022-12-13 18:37:18,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2022-12-13 18:37:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3273. [2022-12-13 18:37:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3273 states, 2603 states have (on average 1.3864771417595083) internal successors, (3609), 2624 states have internal predecessors, (3609), 560 states have call successors, (560), 98 states have call predecessors, (560), 109 states have return successors, (812), 570 states have call predecessors, (812), 558 states have call successors, (812) [2022-12-13 18:37:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 4981 transitions. [2022-12-13 18:37:19,129 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 4981 transitions. Word has length 267 [2022-12-13 18:37:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:37:19,129 INFO L495 AbstractCegarLoop]: Abstraction has 3273 states and 4981 transitions. [2022-12-13 18:37:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.411764705882353) internal successors, (160), 14 states have internal predecessors, (160), 4 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 18:37:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 4981 transitions. [2022-12-13 18:37:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-12-13 18:37:19,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:37:19,148 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 3, 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] [2022-12-13 18:37:19,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 18:37:19,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 18:37:19,349 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:37:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:37:19,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2003853041, now seen corresponding path program 1 times [2022-12-13 18:37:19,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:37:19,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829644341] [2022-12-13 18:37:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:37:19,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:37:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:37:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:37:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:37:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:37:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:37:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:37:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:37:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:37:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:37:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:37:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:37:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:37:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:37:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:37:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-12-13 18:37:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2045 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2022-12-13 18:37:20,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:37:20,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829644341] [2022-12-13 18:37:20,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829644341] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:37:20,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405875265] [2022-12-13 18:37:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:37:20,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:37:20,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:37:20,371 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:37:20,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 18:37:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:21,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:37:21,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:37:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2045 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2033 trivial. 0 not checked. [2022-12-13 18:37:21,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:37:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2045 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2037 trivial. 0 not checked. [2022-12-13 18:37:21,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405875265] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:37:21,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:37:21,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 15 [2022-12-13 18:37:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172284026] [2022-12-13 18:37:21,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:37:21,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:37:21,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:37:21,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:37:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:37:21,612 INFO L87 Difference]: Start difference. First operand 3273 states and 4981 transitions. Second operand has 15 states, 14 states have (on average 11.785714285714286) internal successors, (165), 11 states have internal predecessors, (165), 3 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-12-13 18:37:26,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:37:29,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:37:56,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:38:05,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:38:05,163 INFO L93 Difference]: Finished difference Result 7063 states and 11099 transitions. [2022-12-13 18:38:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 18:38:05,164 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 11.785714285714286) internal successors, (165), 11 states have internal predecessors, (165), 3 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 276 [2022-12-13 18:38:05,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:38:05,182 INFO L225 Difference]: With dead ends: 7063 [2022-12-13 18:38:05,182 INFO L226 Difference]: Without dead ends: 4181 [2022-12-13 18:38:05,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=274, Invalid=986, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 18:38:05,190 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 3747 mSDsluCounter, 11074 mSDsCounter, 0 mSdLazyCounter, 8059 mSolverCounterSat, 1257 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 12493 SdHoareTripleChecker+Invalid, 9319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1257 IncrementalHoareTripleChecker+Valid, 8059 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:38:05,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3825 Valid, 12493 Invalid, 9319 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1257 Valid, 8059 Invalid, 3 Unknown, 0 Unchecked, 40.2s Time] [2022-12-13 18:38:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2022-12-13 18:38:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 3513. [2022-12-13 18:38:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2807 states have (on average 1.3754898468115426) internal successors, (3861), 2828 states have internal predecessors, (3861), 596 states have call successors, (596), 98 states have call predecessors, (596), 109 states have return successors, (884), 606 states have call predecessors, (884), 594 states have call successors, (884) [2022-12-13 18:38:05,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5341 transitions. [2022-12-13 18:38:05,371 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5341 transitions. Word has length 276 [2022-12-13 18:38:05,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:38:05,371 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 5341 transitions. [2022-12-13 18:38:05,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 11.785714285714286) internal successors, (165), 11 states have internal predecessors, (165), 3 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-12-13 18:38:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5341 transitions. [2022-12-13 18:38:05,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-12-13 18:38:05,392 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:38:05,392 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 8, 8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:38:05,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 18:38:05,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 18:38:05,593 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:38:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:38:05,594 INFO L85 PathProgramCache]: Analyzing trace with hash 827050931, now seen corresponding path program 1 times [2022-12-13 18:38:05,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:38:05,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354014133] [2022-12-13 18:38:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:05,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:38:05,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:38:05,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159519775] [2022-12-13 18:38:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:05,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:38:05,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:38:05,731 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:38:05,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 18:38:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:06,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 5086 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 18:38:06,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:38:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 136 proven. 76 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2022-12-13 18:38:07,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:38:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2022-12-13 18:38:11,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:38:11,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354014133] [2022-12-13 18:38:11,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:38:11,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159519775] [2022-12-13 18:38:11,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159519775] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:38:11,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:38:11,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 13 [2022-12-13 18:38:11,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257680739] [2022-12-13 18:38:11,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:38:11,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:38:11,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:38:11,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:38:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:38:11,051 INFO L87 Difference]: Start difference. First operand 3513 states and 5341 transitions. Second operand has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 13 states have internal predecessors, (178), 8 states have call successors, (61), 8 states have call predecessors, (61), 10 states have return successors, (57), 7 states have call predecessors, (57), 7 states have call successors, (57) [2022-12-13 18:38:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:38:24,988 INFO L93 Difference]: Finished difference Result 3708 states and 5620 transitions. [2022-12-13 18:38:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:38:24,990 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 13 states have internal predecessors, (178), 8 states have call successors, (61), 8 states have call predecessors, (61), 10 states have return successors, (57), 7 states have call predecessors, (57), 7 states have call successors, (57) Word has length 409 [2022-12-13 18:38:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:38:25,001 INFO L225 Difference]: With dead ends: 3708 [2022-12-13 18:38:25,001 INFO L226 Difference]: Without dead ends: 3705 [2022-12-13 18:38:25,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 803 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:38:25,003 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 6284 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 2923 mSolverCounterSat, 2572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6291 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 5495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2572 IncrementalHoareTripleChecker+Valid, 2923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:38:25,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6291 Valid, 3438 Invalid, 5495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2572 Valid, 2923 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-12-13 18:38:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2022-12-13 18:38:25,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3645. [2022-12-13 18:38:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2915 states have (on average 1.381132075471698) internal successors, (4026), 2934 states have internal predecessors, (4026), 605 states have call successors, (605), 111 states have call predecessors, (605), 124 states have return successors, (895), 620 states have call predecessors, (895), 604 states have call successors, (895) [2022-12-13 18:38:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5526 transitions. [2022-12-13 18:38:25,176 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5526 transitions. Word has length 409 [2022-12-13 18:38:25,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:38:25,176 INFO L495 AbstractCegarLoop]: Abstraction has 3645 states and 5526 transitions. [2022-12-13 18:38:25,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 13 states have internal predecessors, (178), 8 states have call successors, (61), 8 states have call predecessors, (61), 10 states have return successors, (57), 7 states have call predecessors, (57), 7 states have call successors, (57) [2022-12-13 18:38:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5526 transitions. [2022-12-13 18:38:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-12-13 18:38:25,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:38:25,192 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:38:25,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 18:38:25,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 18:38:25,394 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:38:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:38:25,395 INFO L85 PathProgramCache]: Analyzing trace with hash 256201616, now seen corresponding path program 1 times [2022-12-13 18:38:25,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:38:25,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594676242] [2022-12-13 18:38:25,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:25,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:38:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:38:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:38:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:38:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:38:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:38:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 18:38:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:38:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:38:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:38:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:38:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:38:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-12-13 18:38:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2031 trivial. 0 not checked. [2022-12-13 18:38:25,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:38:25,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594676242] [2022-12-13 18:38:25,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594676242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:38:25,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:38:25,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:38:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073139354] [2022-12-13 18:38:25,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:38:25,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:38:25,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:38:25,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:38:25,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:38:25,735 INFO L87 Difference]: Start difference. First operand 3645 states and 5526 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:38:28,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:38:30,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:38:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:38:41,461 INFO L93 Difference]: Finished difference Result 7696 states and 12019 transitions. [2022-12-13 18:38:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:38:41,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 263 [2022-12-13 18:38:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:38:41,480 INFO L225 Difference]: With dead ends: 7696 [2022-12-13 18:38:41,480 INFO L226 Difference]: Without dead ends: 4442 [2022-12-13 18:38:41,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:38:41,489 INFO L413 NwaCegarLoop]: 1420 mSDtfsCounter, 2254 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 1194 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 4084 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:38:41,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2366 Valid, 4084 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1194 Valid, 2565 Invalid, 2 Unknown, 0 Unchecked, 15.2s Time] [2022-12-13 18:38:41,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-12-13 18:38:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 3645. [2022-12-13 18:38:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2915 states have (on average 1.379073756432247) internal successors, (4020), 2934 states have internal predecessors, (4020), 605 states have call successors, (605), 111 states have call predecessors, (605), 124 states have return successors, (895), 620 states have call predecessors, (895), 604 states have call successors, (895) [2022-12-13 18:38:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5520 transitions. [2022-12-13 18:38:41,679 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5520 transitions. Word has length 263 [2022-12-13 18:38:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:38:41,679 INFO L495 AbstractCegarLoop]: Abstraction has 3645 states and 5520 transitions. [2022-12-13 18:38:41,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:38:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5520 transitions. [2022-12-13 18:38:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-12-13 18:38:41,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:38:41,690 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:38:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 18:38:41,690 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:38:41,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:38:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1493461425, now seen corresponding path program 1 times [2022-12-13 18:38:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:38:41,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828994662] [2022-12-13 18:38:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:38:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:38:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:38:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:38:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:38:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:38:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:38:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:38:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:38:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:38:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:38:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:38:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-12-13 18:38:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2022-12-13 18:38:42,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:38:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828994662] [2022-12-13 18:38:42,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828994662] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:38:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927266831] [2022-12-13 18:38:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:42,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:38:42,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:38:42,593 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:38:42,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 18:38:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:43,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:38:43,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:38:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:38:43,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:38:43,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927266831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:38:43,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:38:43,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 11 [2022-12-13 18:38:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477670999] [2022-12-13 18:38:43,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:38:43,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:38:43,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:38:43,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:38:43,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:38:43,396 INFO L87 Difference]: Start difference. First operand 3645 states and 5520 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:38:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:38:43,665 INFO L93 Difference]: Finished difference Result 7135 states and 10880 transitions. [2022-12-13 18:38:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:38:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 262 [2022-12-13 18:38:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:38:43,677 INFO L225 Difference]: With dead ends: 7135 [2022-12-13 18:38:43,677 INFO L226 Difference]: Without dead ends: 3881 [2022-12-13 18:38:43,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:38:43,685 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 93 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 5193 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:38:43,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 5193 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:38:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3881 states. [2022-12-13 18:38:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3881 to 3657. [2022-12-13 18:38:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 2927 states have (on average 1.3795695251110351) internal successors, (4038), 2946 states have internal predecessors, (4038), 605 states have call successors, (605), 111 states have call predecessors, (605), 124 states have return successors, (895), 620 states have call predecessors, (895), 604 states have call successors, (895) [2022-12-13 18:38:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5538 transitions. [2022-12-13 18:38:43,922 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5538 transitions. Word has length 262 [2022-12-13 18:38:43,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:38:43,922 INFO L495 AbstractCegarLoop]: Abstraction has 3657 states and 5538 transitions. [2022-12-13 18:38:43,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:38:43,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5538 transitions. [2022-12-13 18:38:43,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-12-13 18:38:43,937 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:38:43,937 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:38:43,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 18:38:44,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:38:44,138 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:38:44,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:38:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash 424538301, now seen corresponding path program 1 times [2022-12-13 18:38:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:38:44,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51375204] [2022-12-13 18:38:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:38:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:38:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:38:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:38:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:38:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:38:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 18:38:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:38:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:38:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:38:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:38:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:38:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-12-13 18:38:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2022-12-13 18:38:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:38:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51375204] [2022-12-13 18:38:44,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51375204] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:38:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793320214] [2022-12-13 18:38:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:44,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:38:44,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:38:44,996 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:38:44,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 18:38:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:45,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:38:45,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:38:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:38:45,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:38:45,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793320214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:38:45,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:38:45,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 11 [2022-12-13 18:38:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693226172] [2022-12-13 18:38:45,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:38:45,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:38:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:38:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:38:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:38:45,874 INFO L87 Difference]: Start difference. First operand 3657 states and 5538 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:38:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:38:46,106 INFO L93 Difference]: Finished difference Result 7159 states and 10914 transitions. [2022-12-13 18:38:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:38:46,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 261 [2022-12-13 18:38:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:38:46,119 INFO L225 Difference]: With dead ends: 7159 [2022-12-13 18:38:46,120 INFO L226 Difference]: Without dead ends: 3893 [2022-12-13 18:38:46,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:38:46,128 INFO L413 NwaCegarLoop]: 1807 mSDtfsCounter, 88 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 5341 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:38:46,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 5341 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:38:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2022-12-13 18:38:46,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3671. [2022-12-13 18:38:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 2941 states have (on average 1.37980278816729) internal successors, (4058), 2960 states have internal predecessors, (4058), 605 states have call successors, (605), 111 states have call predecessors, (605), 124 states have return successors, (895), 620 states have call predecessors, (895), 604 states have call successors, (895) [2022-12-13 18:38:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5558 transitions. [2022-12-13 18:38:46,384 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5558 transitions. Word has length 261 [2022-12-13 18:38:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:38:46,384 INFO L495 AbstractCegarLoop]: Abstraction has 3671 states and 5558 transitions. [2022-12-13 18:38:46,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:38:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5558 transitions. [2022-12-13 18:38:46,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-12-13 18:38:46,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:38:46,399 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:38:46,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 18:38:46,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 18:38:46,601 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:38:46,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:38:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash -537144446, now seen corresponding path program 1 times [2022-12-13 18:38:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:38:46,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380679401] [2022-12-13 18:38:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:38:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:38:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:46,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:38:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:38:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:38:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:38:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 18:38:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:38:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:38:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:38:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:38:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:38:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-12-13 18:38:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2022-12-13 18:38:47,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:38:47,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380679401] [2022-12-13 18:38:47,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380679401] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:38:47,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532166322] [2022-12-13 18:38:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:47,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:38:47,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:38:47,735 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:38:47,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 18:38:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:48,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:38:48,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:38:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:38:48,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:38:48,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532166322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:38:48,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:38:48,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2022-12-13 18:38:48,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781153513] [2022-12-13 18:38:48,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:38:48,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:38:48,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:38:48,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:38:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:38:48,551 INFO L87 Difference]: Start difference. First operand 3671 states and 5558 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:38:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:38:48,914 INFO L93 Difference]: Finished difference Result 6985 states and 10588 transitions. [2022-12-13 18:38:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:38:48,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 260 [2022-12-13 18:38:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:38:48,927 INFO L225 Difference]: With dead ends: 6985 [2022-12-13 18:38:48,927 INFO L226 Difference]: Without dead ends: 3705 [2022-12-13 18:38:48,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:38:48,936 INFO L413 NwaCegarLoop]: 1726 mSDtfsCounter, 152 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 6769 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:38:48,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 6769 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:38:48,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2022-12-13 18:38:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3671. [2022-12-13 18:38:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 2941 states have (on average 1.378782726963618) internal successors, (4055), 2960 states have internal predecessors, (4055), 605 states have call successors, (605), 111 states have call predecessors, (605), 124 states have return successors, (895), 620 states have call predecessors, (895), 604 states have call successors, (895) [2022-12-13 18:38:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5555 transitions. [2022-12-13 18:38:49,097 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5555 transitions. Word has length 260 [2022-12-13 18:38:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:38:49,097 INFO L495 AbstractCegarLoop]: Abstraction has 3671 states and 5555 transitions. [2022-12-13 18:38:49,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:38:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5555 transitions. [2022-12-13 18:38:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-12-13 18:38:49,107 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:38:49,107 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:38:49,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 18:38:49,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 18:38:49,308 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:38:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:38:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1596777238, now seen corresponding path program 1 times [2022-12-13 18:38:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:38:49,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109220050] [2022-12-13 18:38:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:49,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:38:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:38:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:38:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:38:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:38:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:50,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:38:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:50,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 18:38:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:38:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:38:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:38:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:38:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:38:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:38:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-12-13 18:38:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2022-12-13 18:38:51,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:38:51,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109220050] [2022-12-13 18:38:51,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109220050] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:38:51,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288075630] [2022-12-13 18:38:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:51,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:38:51,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:38:51,218 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:38:51,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 18:38:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:51,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:38:51,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:38:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:38:52,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:38:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2033 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:38:52,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288075630] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:38:52,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:38:52,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2022-12-13 18:38:52,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836975383] [2022-12-13 18:38:52,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:38:52,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 18:38:52,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:38:52,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 18:38:52,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:38:52,703 INFO L87 Difference]: Start difference. First operand 3671 states and 5555 transitions. Second operand has 20 states, 19 states have (on average 8.578947368421053) internal successors, (163), 16 states have internal predecessors, (163), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 18:38:59,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:39:01,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:39:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:39:58,017 INFO L93 Difference]: Finished difference Result 8433 states and 13363 transitions. [2022-12-13 18:39:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 18:39:58,018 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 8.578947368421053) internal successors, (163), 16 states have internal predecessors, (163), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 263 [2022-12-13 18:39:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:39:58,041 INFO L225 Difference]: With dead ends: 8433 [2022-12-13 18:39:58,041 INFO L226 Difference]: Without dead ends: 5153 [2022-12-13 18:39:58,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=469, Invalid=2183, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 18:39:58,051 INFO L413 NwaCegarLoop]: 1466 mSDtfsCounter, 5899 mSDsluCounter, 16242 mSDsCounter, 0 mSdLazyCounter, 12999 mSolverCounterSat, 2967 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5990 SdHoareTripleChecker+Valid, 17708 SdHoareTripleChecker+Invalid, 15968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2967 IncrementalHoareTripleChecker+Valid, 12999 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:39:58,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5990 Valid, 17708 Invalid, 15968 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2967 Valid, 12999 Invalid, 2 Unknown, 0 Unchecked, 58.5s Time] [2022-12-13 18:39:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5153 states. [2022-12-13 18:39:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5153 to 3912. [2022-12-13 18:39:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3127 states have (on average 1.3767188999040614) internal successors, (4305), 3142 states have internal predecessors, (4305), 660 states have call successors, (660), 111 states have call predecessors, (660), 124 states have return successors, (1005), 679 states have call predecessors, (1005), 659 states have call successors, (1005) [2022-12-13 18:39:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5970 transitions. [2022-12-13 18:39:58,290 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5970 transitions. Word has length 263 [2022-12-13 18:39:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:39:58,290 INFO L495 AbstractCegarLoop]: Abstraction has 3912 states and 5970 transitions. [2022-12-13 18:39:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 8.578947368421053) internal successors, (163), 16 states have internal predecessors, (163), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 18:39:58,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5970 transitions. [2022-12-13 18:39:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-12-13 18:39:58,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:39:58,303 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:39:58,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-13 18:39:58,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:39:58,504 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:39:58,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:39:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash -717562647, now seen corresponding path program 1 times [2022-12-13 18:39:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:39:58,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124764702] [2022-12-13 18:39:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:39:58,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:39:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:39:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:39:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:59,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:39:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:40:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:40:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:40:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:40:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:40:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:40:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:40:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:40:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:40:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:40:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-12-13 18:40:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2093 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2022-12-13 18:40:00,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:40:00,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124764702] [2022-12-13 18:40:00,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124764702] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:40:00,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606421052] [2022-12-13 18:40:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:40:00,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:40:00,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:40:00,456 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:40:00,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 18:40:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:01,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2285 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:40:01,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:40:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2093 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:40:02,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:40:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2093 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:40:03,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606421052] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:40:03,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:40:03,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2022-12-13 18:40:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998801551] [2022-12-13 18:40:03,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:40:03,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 18:40:03,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:40:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 18:40:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2022-12-13 18:40:03,727 INFO L87 Difference]: Start difference. First operand 3912 states and 5970 transitions. Second operand has 29 states, 28 states have (on average 7.107142857142857) internal successors, (199), 25 states have internal predecessors, (199), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 18:40:09,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:40:11,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:40:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:40:54,466 INFO L93 Difference]: Finished difference Result 9044 states and 14462 transitions. [2022-12-13 18:40:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-13 18:40:54,467 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 7.107142857142857) internal successors, (199), 25 states have internal predecessors, (199), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 281 [2022-12-13 18:40:54,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:40:54,490 INFO L225 Difference]: With dead ends: 9044 [2022-12-13 18:40:54,490 INFO L226 Difference]: Without dead ends: 5523 [2022-12-13 18:40:54,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=617, Invalid=3289, Unknown=0, NotChecked=0, Total=3906 [2022-12-13 18:40:54,501 INFO L413 NwaCegarLoop]: 1480 mSDtfsCounter, 6213 mSDsluCounter, 12416 mSDsCounter, 0 mSdLazyCounter, 9038 mSolverCounterSat, 3156 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6320 SdHoareTripleChecker+Valid, 13896 SdHoareTripleChecker+Invalid, 12196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3156 IncrementalHoareTripleChecker+Valid, 9038 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:40:54,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6320 Valid, 13896 Invalid, 12196 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3156 Valid, 9038 Invalid, 2 Unknown, 0 Unchecked, 42.7s Time] [2022-12-13 18:40:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2022-12-13 18:40:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 4012. [2022-12-13 18:40:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4012 states, 3211 states have (on average 1.3724696356275303) internal successors, (4407), 3226 states have internal predecessors, (4407), 676 states have call successors, (676), 111 states have call predecessors, (676), 124 states have return successors, (1037), 695 states have call predecessors, (1037), 675 states have call successors, (1037) [2022-12-13 18:40:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4012 states to 4012 states and 6120 transitions. [2022-12-13 18:40:54,767 INFO L78 Accepts]: Start accepts. Automaton has 4012 states and 6120 transitions. Word has length 281 [2022-12-13 18:40:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:40:54,767 INFO L495 AbstractCegarLoop]: Abstraction has 4012 states and 6120 transitions. [2022-12-13 18:40:54,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 7.107142857142857) internal successors, (199), 25 states have internal predecessors, (199), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 18:40:54,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4012 states and 6120 transitions. [2022-12-13 18:40:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-12-13 18:40:54,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:40:54,784 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 14, 14, 14, 14, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:40:54,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 18:40:54,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 18:40:54,985 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:40:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:40:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash 571249920, now seen corresponding path program 1 times [2022-12-13 18:40:54,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:40:54,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183286265] [2022-12-13 18:40:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:40:54,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:40:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:40:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:40:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:40:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:40:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:40:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:40:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 18:40:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:40:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:40:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:40:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:40:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:40:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:40:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-12-13 18:40:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2401 trivial. 0 not checked. [2022-12-13 18:40:55,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:40:55,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183286265] [2022-12-13 18:40:55,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183286265] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:40:55,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610813978] [2022-12-13 18:40:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:40:55,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:40:55,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:40:55,910 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:40:55,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 18:40:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:56,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 2348 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:40:56,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:40:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2399 trivial. 0 not checked. [2022-12-13 18:40:56,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:40:56,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610813978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:40:56,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:40:56,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-12-13 18:40:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252815977] [2022-12-13 18:40:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:40:56,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:40:56,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:40:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:40:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:40:56,897 INFO L87 Difference]: Start difference. First operand 4012 states and 6120 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:40:57,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:40:57,541 INFO L93 Difference]: Finished difference Result 7833 states and 11993 transitions. [2022-12-13 18:40:57,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:40:57,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 311 [2022-12-13 18:40:57,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:40:57,559 INFO L225 Difference]: With dead ends: 7833 [2022-12-13 18:40:57,559 INFO L226 Difference]: Without dead ends: 4212 [2022-12-13 18:40:57,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:40:57,574 INFO L413 NwaCegarLoop]: 1799 mSDtfsCounter, 131 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 5230 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:40:57,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 5230 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:40:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2022-12-13 18:40:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 4064. [2022-12-13 18:40:57,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4064 states, 3252 states have (on average 1.3730012300123002) internal successors, (4465), 3263 states have internal predecessors, (4465), 687 states have call successors, (687), 111 states have call predecessors, (687), 124 states have return successors, (1059), 710 states have call predecessors, (1059), 686 states have call successors, (1059) [2022-12-13 18:40:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4064 states to 4064 states and 6211 transitions. [2022-12-13 18:40:57,817 INFO L78 Accepts]: Start accepts. Automaton has 4064 states and 6211 transitions. Word has length 311 [2022-12-13 18:40:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:40:57,817 INFO L495 AbstractCegarLoop]: Abstraction has 4064 states and 6211 transitions. [2022-12-13 18:40:57,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:40:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4064 states and 6211 transitions. [2022-12-13 18:40:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-12-13 18:40:57,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:40:57,833 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 14, 14, 14, 14, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:40:57,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 18:40:58,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:40:58,035 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:40:58,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:40:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash -962624578, now seen corresponding path program 1 times [2022-12-13 18:40:58,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:40:58,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318943938] [2022-12-13 18:40:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:40:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:40:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:40:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:40:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:40:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:40:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:40:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:40:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:40:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:40:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:40:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:40:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:40:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:40:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:40:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-12-13 18:40:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:40:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2403 trivial. 0 not checked. [2022-12-13 18:40:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:40:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318943938] [2022-12-13 18:40:58,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318943938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:40:58,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:40:58,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:40:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108707117] [2022-12-13 18:40:58,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:40:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:40:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:40:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:40:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:40:58,512 INFO L87 Difference]: Start difference. First operand 4064 states and 6211 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:41:01,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:41:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:41:17,657 INFO L93 Difference]: Finished difference Result 8639 states and 13632 transitions. [2022-12-13 18:41:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:41:17,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 314 [2022-12-13 18:41:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:41:17,680 INFO L225 Difference]: With dead ends: 8639 [2022-12-13 18:41:17,680 INFO L226 Difference]: Without dead ends: 4966 [2022-12-13 18:41:17,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:41:17,694 INFO L413 NwaCegarLoop]: 1400 mSDtfsCounter, 1830 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 3820 mSolverCounterSat, 836 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5538 SdHoareTripleChecker+Invalid, 4657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 3820 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:41:17,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 5538 Invalid, 4657 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [836 Valid, 3820 Invalid, 1 Unknown, 0 Unchecked, 18.3s Time] [2022-12-13 18:41:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2022-12-13 18:41:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 4080. [2022-12-13 18:41:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 3268 states have (on average 1.3730110159118727) internal successors, (4487), 3279 states have internal predecessors, (4487), 687 states have call successors, (687), 111 states have call predecessors, (687), 124 states have return successors, (1059), 710 states have call predecessors, (1059), 686 states have call successors, (1059) [2022-12-13 18:41:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 6233 transitions. [2022-12-13 18:41:17,928 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 6233 transitions. Word has length 314 [2022-12-13 18:41:17,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:41:17,929 INFO L495 AbstractCegarLoop]: Abstraction has 4080 states and 6233 transitions. [2022-12-13 18:41:17,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 18:41:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 6233 transitions. [2022-12-13 18:41:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-12-13 18:41:17,945 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:41:17,945 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 14, 14, 14, 14, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:41:17,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 18:41:17,945 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:41:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:41:17,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1611628471, now seen corresponding path program 1 times [2022-12-13 18:41:17,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:41:17,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614756282] [2022-12-13 18:41:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:41:17,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:41:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:41:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:41:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:41:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:41:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:41:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:41:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 18:41:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:41:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:41:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:41:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:41:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:41:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:41:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-12-13 18:41:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:41:19,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:41:19,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614756282] [2022-12-13 18:41:19,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614756282] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:41:19,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524139760] [2022-12-13 18:41:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:41:19,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:41:19,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:41:19,377 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:41:19,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 18:41:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:20,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:41:20,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:41:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:41:20,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:41:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:41:22,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524139760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:41:22,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:41:22,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 36 [2022-12-13 18:41:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399642872] [2022-12-13 18:41:22,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:41:22,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 18:41:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:41:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 18:41:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=724, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 18:41:22,819 INFO L87 Difference]: Start difference. First operand 4080 states and 6233 transitions. Second operand has 36 states, 36 states have (on average 6.111111111111111) internal successors, (220), 33 states have internal predecessors, (220), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 18:41:26,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:41:28,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:41:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:41:42,538 INFO L93 Difference]: Finished difference Result 5141 states and 8268 transitions. [2022-12-13 18:41:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 18:41:42,539 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.111111111111111) internal successors, (220), 33 states have internal predecessors, (220), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 309 [2022-12-13 18:41:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:41:42,559 INFO L225 Difference]: With dead ends: 5141 [2022-12-13 18:41:42,559 INFO L226 Difference]: Without dead ends: 5135 [2022-12-13 18:41:42,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=541, Invalid=791, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 18:41:42,562 INFO L413 NwaCegarLoop]: 1403 mSDtfsCounter, 2507 mSDsluCounter, 3971 mSDsCounter, 0 mSdLazyCounter, 3309 mSolverCounterSat, 1429 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 4740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1429 IncrementalHoareTripleChecker+Valid, 3309 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:41:42,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2677 Valid, 5374 Invalid, 4740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1429 Valid, 3309 Invalid, 2 Unknown, 0 Unchecked, 18.9s Time] [2022-12-13 18:41:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5135 states. [2022-12-13 18:41:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5135 to 4272. [2022-12-13 18:41:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 3428 states have (on average 1.3649358226371062) internal successors, (4679), 3439 states have internal predecessors, (4679), 719 states have call successors, (719), 111 states have call predecessors, (719), 124 states have return successors, (1123), 742 states have call predecessors, (1123), 718 states have call successors, (1123) [2022-12-13 18:41:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 6521 transitions. [2022-12-13 18:41:42,792 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 6521 transitions. Word has length 309 [2022-12-13 18:41:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:41:42,793 INFO L495 AbstractCegarLoop]: Abstraction has 4272 states and 6521 transitions. [2022-12-13 18:41:42,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.111111111111111) internal successors, (220), 33 states have internal predecessors, (220), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 18:41:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 6521 transitions. [2022-12-13 18:41:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-12-13 18:41:42,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:41:42,815 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 30, 30, 30, 30, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:41:42,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-13 18:41:43,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 18:41:43,017 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:41:43,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:41:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash -379859372, now seen corresponding path program 1 times [2022-12-13 18:41:43,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:41:43,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034382568] [2022-12-13 18:41:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:41:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:41:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:41:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:41:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:41:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:41:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:41:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:41:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 18:41:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:41:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:41:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:41:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:41:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:41:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:41:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-12-13 18:41:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:41:46,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:41:46,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034382568] [2022-12-13 18:41:46,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034382568] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:41:46,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782466267] [2022-12-13 18:41:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:41:46,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:41:46,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:41:46,988 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:41:46,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 18:41:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:47,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 18:41:47,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:41:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:41:48,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:41:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 18:41:51,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782466267] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:41:51,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:41:51,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 33, 33] total 38 [2022-12-13 18:41:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160031545] [2022-12-13 18:41:51,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:41:51,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 18:41:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:41:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 18:41:51,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 18:41:51,858 INFO L87 Difference]: Start difference. First operand 4272 states and 6521 transitions. Second operand has 38 states, 38 states have (on average 6.157894736842105) internal successors, (234), 35 states have internal predecessors, (234), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 18:41:56,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:41:58,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:42:19,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:42:19,994 INFO L93 Difference]: Finished difference Result 5165 states and 8290 transitions. [2022-12-13 18:42:19,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 18:42:19,995 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.157894736842105) internal successors, (234), 35 states have internal predecessors, (234), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 375 [2022-12-13 18:42:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:42:20,020 INFO L225 Difference]: With dead ends: 5165 [2022-12-13 18:42:20,020 INFO L226 Difference]: Without dead ends: 5159 [2022-12-13 18:42:20,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 744 SyntacticMatches, 30 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=608, Invalid=874, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 18:42:20,025 INFO L413 NwaCegarLoop]: 1437 mSDtfsCounter, 2498 mSDsluCounter, 7897 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1383 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 9334 SdHoareTripleChecker+Invalid, 6903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1383 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:42:20,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 9334 Invalid, 6903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1383 Valid, 5518 Invalid, 2 Unknown, 0 Unchecked, 27.2s Time] [2022-12-13 18:42:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2022-12-13 18:42:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 4296. [2022-12-13 18:42:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 3448 states have (on average 1.3639791183294663) internal successors, (4703), 3459 states have internal predecessors, (4703), 723 states have call successors, (723), 111 states have call predecessors, (723), 124 states have return successors, (1131), 746 states have call predecessors, (1131), 722 states have call successors, (1131) [2022-12-13 18:42:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6557 transitions. [2022-12-13 18:42:20,288 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6557 transitions. Word has length 375 [2022-12-13 18:42:20,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:42:20,289 INFO L495 AbstractCegarLoop]: Abstraction has 4296 states and 6557 transitions. [2022-12-13 18:42:20,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.157894736842105) internal successors, (234), 35 states have internal predecessors, (234), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 18:42:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6557 transitions. [2022-12-13 18:42:20,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-12-13 18:42:20,311 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:42:20,311 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:42:20,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 18:42:20,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f06b2-cfb0-4dd3-a3e6-4f11437090dc/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 18:42:20,513 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:42:20,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:42:20,514 INFO L85 PathProgramCache]: Analyzing trace with hash -848257700, now seen corresponding path program 1 times [2022-12-13 18:42:20,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:42:20,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095110818] [2022-12-13 18:42:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:42:20,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:42:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:42:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:42:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 18:42:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:42:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:42:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:42:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:42:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:42:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:42:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:42:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:42:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:42:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:42:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-12-13 18:42:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:42:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4043 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4043 trivial. 0 not checked. [2022-12-13 18:42:21,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:42:21,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095110818] [2022-12-13 18:42:21,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095110818] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:42:21,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:42:21,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 18:42:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791617841] [2022-12-13 18:42:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:42:21,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:42:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:42:21,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:42:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:42:21,973 INFO L87 Difference]: Start difference. First operand 4296 states and 6557 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 18:42:25,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 18:42:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:42:54,181 INFO L93 Difference]: Finished difference Result 5695 states and 9097 transitions. [2022-12-13 18:42:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 18:42:54,182 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 382 [2022-12-13 18:42:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:42:54,184 INFO L225 Difference]: With dead ends: 5695 [2022-12-13 18:42:54,184 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 18:42:54,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:42:54,211 INFO L413 NwaCegarLoop]: 1214 mSDtfsCounter, 8920 mSDsluCounter, 3696 mSDsCounter, 0 mSdLazyCounter, 6717 mSolverCounterSat, 4052 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9016 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 10770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4052 IncrementalHoareTripleChecker+Valid, 6717 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:42:54,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9016 Valid, 4910 Invalid, 10770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4052 Valid, 6717 Invalid, 1 Unknown, 0 Unchecked, 30.2s Time] [2022-12-13 18:42:54,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 18:42:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 18:42:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:42:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 18:42:54,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 382 [2022-12-13 18:42:54,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:42:54,214 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:42:54,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 18:42:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 18:42:54,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 18:42:54,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 18:42:54,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 18:42:54,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 18:43:02,081 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 58 DAG size of output: 49 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:43:09,361 WARN L233 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 59 DAG size of output: 50 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:43:16,393 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 60 DAG size of output: 51 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:43:23,491 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 59 DAG size of output: 50 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:44:16,410 WARN L233 SmtUtils]: Spent 52.92s on a formula simplification. DAG size of input: 60 DAG size of output: 59 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:44:23,501 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 59 DAG size of output: 50 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:45:14,729 WARN L233 SmtUtils]: Spent 51.23s on a formula simplification. DAG size of input: 60 DAG size of output: 59 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:45:22,497 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:45:30,258 WARN L233 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:45:38,012 WARN L233 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:45:45,750 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:45:53,495 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:46:01,244 WARN L233 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-13 18:46:08,992 WARN L233 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)