./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.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_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/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_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/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_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/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 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- 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 17:40:49,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:40:49,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:40:49,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:40:49,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:40:49,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:40:49,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:40:49,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:40:49,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:40:49,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:40:49,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:40:49,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:40:49,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:40:49,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:40:49,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:40:49,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:40:49,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:40:49,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:40:49,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:40:49,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:40:49,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:40:49,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:40:49,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:40:49,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:40:49,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:40:49,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:40:49,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:40:49,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:40:49,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:40:49,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:40:49,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:40:49,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:40:49,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:40:49,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:40:49,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:40:49,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:40:49,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:40:49,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:40:49,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:40:49,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:40:49,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:40:49,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 17:40:49,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:40:49,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:40:49,793 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:40:49,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:40:49,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:40:49,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:40:49,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:40:49,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:40:49,795 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:40:49,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:40:49,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:40:49,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:40:49,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:40:49,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:40:49,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:40:49,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:40:49,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:40:49,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:40:49,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:40:49,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:40:49,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:40:49,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:40:49,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:40:49,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:40:49,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:40:49,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:40:49,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:40:49,799 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:40:49,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:40:49,799 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:40:49,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:40:49,799 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:40:49,799 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_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2022-12-13 17:40:50,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:40:50,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:40:50,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:40:50,028 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:40:50,029 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:40:50,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2022-12-13 17:40:52,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:40:52,934 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:40:52,934 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2022-12-13 17:40:52,957 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/data/6b1115bd9/496caac210fc4193a3b68178ab19f932/FLAGd80ef2e75 [2022-12-13 17:40:52,972 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/data/6b1115bd9/496caac210fc4193a3b68178ab19f932 [2022-12-13 17:40:52,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:40:52,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:40:52,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:40:52,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:40:52,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:40:52,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:40:52" (1/1) ... [2022-12-13 17:40:52,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cd3c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:52, skipping insertion in model container [2022-12-13 17:40:52,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:40:52" (1/1) ... [2022-12-13 17:40:52,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:40:53,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:40:53,300 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_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2022-12-13 17:40:53,307 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_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2022-12-13 17:40:53,973 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:53,974 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:53,975 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:53,976 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:53,977 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:53,991 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:53,992 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:53,994 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:53,995 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,082 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:40:54,082 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:40:54,083 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:40:54,088 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 17:40:54,090 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 17:40:54,090 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 17:40:54,352 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 17:40:54,353 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 17:40:54,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 17:40:54,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 17:40:54,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 17:40:54,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 17:40:54,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 17:40:54,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 17:40:54,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 17:40:54,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 17:40:54,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 17:40:54,513 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 17:40:54,535 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:40:54,555 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 17:40:54,565 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:40:54,617 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,617 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,656 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:40:54,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:40:54,688 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:40:54,697 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_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4498,4511] [2022-12-13 17:40:54,697 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_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i[4558,4571] [2022-12-13 17:40:54,718 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,719 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,719 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,719 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,720 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,723 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,724 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,724 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,725 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,729 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:40:54,729 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:40:54,730 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:40:54,732 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 17:40:54,733 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 17:40:54,733 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 17:40:54,745 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 17:40:54,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 17:40:54,746 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 17:40:54,746 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 17:40:54,747 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 17:40:54,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 17:40:54,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 17:40:54,748 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 17:40:54,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 17:40:54,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 17:40:54,749 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 17:40:54,764 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 17:40:54,771 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:40:54,777 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 17:40:54,781 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:40:54,796 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,796 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:40:54,812 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:40:54,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:40:54,948 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:40:54,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54 WrapperNode [2022-12-13 17:40:54,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:40:54,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:40:54,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:40:54,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:40:54,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,049 INFO L138 Inliner]: procedures = 691, calls = 2614, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 773 [2022-12-13 17:40:55,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:40:55,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:40:55,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:40:55,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:40:55,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:40:55,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:40:55,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:40:55,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:40:55,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (1/1) ... [2022-12-13 17:40:55,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:40:55,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:40:55,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:40:55,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:40:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2022-12-13 17:40:55,185 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2022-12-13 17:40:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:40:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 17:40:55,185 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 17:40:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:40:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 17:40:55,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 17:40:55,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:40:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:40:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-12-13 17:40:55,186 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-12-13 17:40:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:40:55,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:40:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 17:40:55,186 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 17:40:55,186 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-13 17:40:55,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-13 17:40:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-12-13 17:40:55,187 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-12-13 17:40:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 17:40:55,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 17:40:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:40:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 17:40:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:40:55,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:40:55,357 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:40:55,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:40:56,155 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:40:56,161 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:40:56,161 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:40:56,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:40:56 BoogieIcfgContainer [2022-12-13 17:40:56,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:40:56,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:40:56,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:40:56,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:40:56,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:40:52" (1/3) ... [2022-12-13 17:40:56,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b0c5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:40:56, skipping insertion in model container [2022-12-13 17:40:56,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:40:54" (2/3) ... [2022-12-13 17:40:56,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b0c5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:40:56, skipping insertion in model container [2022-12-13 17:40:56,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:40:56" (3/3) ... [2022-12-13 17:40:56,172 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2022-12-13 17:40:56,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:40:56,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:40:56,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:40:56,233 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;@54bd6867, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:40:56,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:40:56,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 47 states have (on average 1.297872340425532) internal successors, (61), 51 states have internal predecessors, (61), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-13 17:40:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:40:56,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:40:56,244 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-12-13 17:40:56,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:40:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:40:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash 106347311, now seen corresponding path program 1 times [2022-12-13 17:40:56,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:40:56,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974886424] [2022-12-13 17:40:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:40:56,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:40:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:40:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:40:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:40:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:40:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 17:40:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:40:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:40:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 17:40:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:40:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:40:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:40:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 17:40:56,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:40:56,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974886424] [2022-12-13 17:40:56,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974886424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:40:56,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:40:56,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:40:56,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693283526] [2022-12-13 17:40:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:40:56,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:40:56,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:40:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:40:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:40:56,772 INFO L87 Difference]: Start difference. First operand has 77 states, 47 states have (on average 1.297872340425532) internal successors, (61), 51 states have internal predecessors, (61), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 17:40:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:40:57,038 INFO L93 Difference]: Finished difference Result 156 states and 223 transitions. [2022-12-13 17:40:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:40:57,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2022-12-13 17:40:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:40:57,046 INFO L225 Difference]: With dead ends: 156 [2022-12-13 17:40:57,047 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 17:40:57,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:40:57,051 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 79 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:40:57,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 76 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:40:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 17:40:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2022-12-13 17:40:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 46 states have internal predecessors, (53), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 17:40:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2022-12-13 17:40:57,083 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 65 [2022-12-13 17:40:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:40:57,083 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2022-12-13 17:40:57,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 17:40:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2022-12-13 17:40:57,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:40:57,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:40:57,085 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-12-13 17:40:57,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:40:57,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:40:57,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:40:57,086 INFO L85 PathProgramCache]: Analyzing trace with hash -566993231, now seen corresponding path program 1 times [2022-12-13 17:40:57,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:40:57,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10515457] [2022-12-13 17:40:57,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:40:57,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:40:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:40:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:40:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:40:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:40:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 17:40:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:40:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:40:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 17:40:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:40:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:40:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:40:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 17:40:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:40:57,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10515457] [2022-12-13 17:40:57,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10515457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:40:57,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:40:57,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:40:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606872193] [2022-12-13 17:40:57,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:40:57,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:40:57,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:40:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:40:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:40:57,621 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 17:40:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:40:57,913 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2022-12-13 17:40:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:40:57,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2022-12-13 17:40:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:40:57,915 INFO L225 Difference]: With dead ends: 97 [2022-12-13 17:40:57,916 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 17:40:57,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:40:57,917 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:40:57,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 106 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:40:57,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 17:40:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2022-12-13 17:40:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 48 states have internal predecessors, (55), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-13 17:40:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2022-12-13 17:40:57,926 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 65 [2022-12-13 17:40:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:40:57,927 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2022-12-13 17:40:57,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 17:40:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2022-12-13 17:40:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 17:40:57,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:40:57,928 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-12-13 17:40:57,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:40:57,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:40:57,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:40:57,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1579169156, now seen corresponding path program 1 times [2022-12-13 17:40:57,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:40:57,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106827177] [2022-12-13 17:40:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:40:57,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:40:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:40:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:40:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:40:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:40:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 17:40:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:40:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:40:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 17:40:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:40:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 17:41:00,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:00,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106827177] [2022-12-13 17:41:00,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106827177] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:00,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57658050] [2022-12-13 17:41:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:00,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:00,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:41:00,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:41:00,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:41:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:00,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 2456 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 17:41:00,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:41:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 17:41:00,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:41:00,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57658050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:41:00,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:41:00,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 22 [2022-12-13 17:41:00,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051599328] [2022-12-13 17:41:00,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:41:00,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:41:00,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:41:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2022-12-13 17:41:00,743 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 17:41:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:00,834 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2022-12-13 17:41:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:41:00,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2022-12-13 17:41:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:00,837 INFO L225 Difference]: With dead ends: 109 [2022-12-13 17:41:00,837 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 17:41:00,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:41:00,838 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 9 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:00,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 504 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:41:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 17:41:00,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2022-12-13 17:41:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 51 states have (on average 1.196078431372549) internal successors, (61), 55 states have internal predecessors, (61), 26 states have call successors, (26), 9 states have call predecessors, (26), 10 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) [2022-12-13 17:41:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2022-12-13 17:41:00,851 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 67 [2022-12-13 17:41:00,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:00,851 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2022-12-13 17:41:00,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 17:41:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2022-12-13 17:41:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 17:41:00,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:00,854 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-12-13 17:41:00,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:41:01,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:01,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash 537595811, now seen corresponding path program 1 times [2022-12-13 17:41:01,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:01,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835935098] [2022-12-13 17:41:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:01,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:41:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 17:41:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:41:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:41:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 17:41:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:41:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 17:41:01,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:01,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835935098] [2022-12-13 17:41:01,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835935098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:41:01,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:41:01,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 17:41:01,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114184562] [2022-12-13 17:41:01,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:41:01,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:41:01,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:01,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:41:01,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:41:01,608 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 17:41:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:02,172 INFO L93 Difference]: Finished difference Result 140 states and 197 transitions. [2022-12-13 17:41:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:41:02,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2022-12-13 17:41:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:02,175 INFO L225 Difference]: With dead ends: 140 [2022-12-13 17:41:02,175 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 17:41:02,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:41:02,176 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 95 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:02,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 181 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:41:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 17:41:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2022-12-13 17:41:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 73 states have internal predecessors, (80), 42 states have call successors, (42), 10 states have call predecessors, (42), 12 states have return successors, (48), 41 states have call predecessors, (48), 41 states have call successors, (48) [2022-12-13 17:41:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2022-12-13 17:41:02,189 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 69 [2022-12-13 17:41:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:02,190 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2022-12-13 17:41:02,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 17:41:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2022-12-13 17:41:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 17:41:02,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:02,193 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-12-13 17:41:02,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:41:02,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:02,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1643615623, now seen corresponding path program 1 times [2022-12-13 17:41:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:02,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419642766] [2022-12-13 17:41:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:41:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 17:41:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:41:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:41:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 17:41:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:41:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 17:41:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:02,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419642766] [2022-12-13 17:41:02,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419642766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:41:02,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:41:02,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 17:41:02,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674618439] [2022-12-13 17:41:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:41:02,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:41:02,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:41:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:41:02,796 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 17:41:03,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:03,417 INFO L93 Difference]: Finished difference Result 145 states and 201 transitions. [2022-12-13 17:41:03,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:41:03,418 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2022-12-13 17:41:03,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:03,419 INFO L225 Difference]: With dead ends: 145 [2022-12-13 17:41:03,419 INFO L226 Difference]: Without dead ends: 117 [2022-12-13 17:41:03,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:41:03,420 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:03,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 192 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:41:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-13 17:41:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2022-12-13 17:41:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 64 states have (on average 1.1875) internal successors, (76), 69 states have internal predecessors, (76), 36 states have call successors, (36), 10 states have call predecessors, (36), 12 states have return successors, (41), 36 states have call predecessors, (41), 35 states have call successors, (41) [2022-12-13 17:41:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 153 transitions. [2022-12-13 17:41:03,430 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 153 transitions. Word has length 70 [2022-12-13 17:41:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:03,430 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 153 transitions. [2022-12-13 17:41:03,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 17:41:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 153 transitions. [2022-12-13 17:41:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 17:41:03,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:03,432 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-12-13 17:41:03,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:41:03,432 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:03,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash 510934331, now seen corresponding path program 1 times [2022-12-13 17:41:03,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:03,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217216010] [2022-12-13 17:41:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:03,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:41:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:41:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:41:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 17:41:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 17:41:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:41:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 17:41:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:41:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 17:41:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:05,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217216010] [2022-12-13 17:41:05,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217216010] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:05,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43078351] [2022-12-13 17:41:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:05,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:05,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:41:05,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:41:05,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:41:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:05,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 17:41:05,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:41:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 17:41:06,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:41:06,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43078351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:41:06,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:41:06,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 29 [2022-12-13 17:41:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828518636] [2022-12-13 17:41:06,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:41:06,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 17:41:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:41:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:41:06,435 INFO L87 Difference]: Start difference. First operand 113 states and 153 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 17:41:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:06,864 INFO L93 Difference]: Finished difference Result 174 states and 243 transitions. [2022-12-13 17:41:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:41:06,865 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2022-12-13 17:41:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:06,866 INFO L225 Difference]: With dead ends: 174 [2022-12-13 17:41:06,866 INFO L226 Difference]: Without dead ends: 139 [2022-12-13 17:41:06,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 17:41:06,868 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 37 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:06,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1156 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:41:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-13 17:41:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2022-12-13 17:41:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 77 states have internal predecessors, (83), 46 states have call successors, (46), 10 states have call predecessors, (46), 13 states have return successors, (54), 46 states have call predecessors, (54), 45 states have call successors, (54) [2022-12-13 17:41:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 183 transitions. [2022-12-13 17:41:06,886 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 183 transitions. Word has length 83 [2022-12-13 17:41:06,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:06,887 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 183 transitions. [2022-12-13 17:41:06,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 17:41:06,887 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 183 transitions. [2022-12-13 17:41:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 17:41:06,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:06,889 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:41:06,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:41:07,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 17:41:07,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash -66334228, now seen corresponding path program 1 times [2022-12-13 17:41:07,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:07,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957238569] [2022-12-13 17:41:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:07,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:41:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:41:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:41:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:41:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 17:41:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 17:41:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:41:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:41:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 17:41:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:08,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957238569] [2022-12-13 17:41:08,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957238569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:08,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252310200] [2022-12-13 17:41:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:08,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:08,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:41:08,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:41:08,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:41:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:09,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 17:41:09,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:41:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 17:41:09,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:41:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-12-13 17:41:10,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252310200] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:10,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:41:10,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [24, 20] total 46 [2022-12-13 17:41:10,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082028068] [2022-12-13 17:41:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:41:10,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:41:10,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:10,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:41:10,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 17:41:10,280 INFO L87 Difference]: Start difference. First operand 131 states and 183 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 17:41:10,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:10,457 INFO L93 Difference]: Finished difference Result 151 states and 208 transitions. [2022-12-13 17:41:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:41:10,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-12-13 17:41:10,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:10,460 INFO L225 Difference]: With dead ends: 151 [2022-12-13 17:41:10,460 INFO L226 Difference]: Without dead ends: 149 [2022-12-13 17:41:10,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=2113, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 17:41:10,462 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 28 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:10,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 545 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:41:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-13 17:41:10,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2022-12-13 17:41:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 83 states have internal predecessors, (90), 48 states have call successors, (48), 12 states have call predecessors, (48), 15 states have return successors, (56), 48 states have call predecessors, (56), 47 states have call successors, (56) [2022-12-13 17:41:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 194 transitions. [2022-12-13 17:41:10,473 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 194 transitions. Word has length 94 [2022-12-13 17:41:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:10,474 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 194 transitions. [2022-12-13 17:41:10,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 17:41:10,474 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 194 transitions. [2022-12-13 17:41:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 17:41:10,475 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:10,475 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-12-13 17:41:10,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:41:10,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:10,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1874232636, now seen corresponding path program 1 times [2022-12-13 17:41:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:10,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755838980] [2022-12-13 17:41:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:41:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:41:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 17:41:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 17:41:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:41:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 17:41:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 17:41:11,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:11,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755838980] [2022-12-13 17:41:11,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755838980] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:11,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059008256] [2022-12-13 17:41:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:11,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:11,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:41:11,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:41:11,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:41:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:11,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 17:41:11,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:41:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:41:12,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:41:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 17:41:12,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059008256] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:12,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:41:12,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17, 14] total 39 [2022-12-13 17:41:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047742816] [2022-12-13 17:41:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:41:12,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:41:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:41:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1359, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 17:41:12,678 INFO L87 Difference]: Start difference. First operand 141 states and 194 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-12-13 17:41:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:13,424 INFO L93 Difference]: Finished difference Result 176 states and 248 transitions. [2022-12-13 17:41:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:41:13,424 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-12-13 17:41:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:13,426 INFO L225 Difference]: With dead ends: 176 [2022-12-13 17:41:13,427 INFO L226 Difference]: Without dead ends: 161 [2022-12-13 17:41:13,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=2160, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 17:41:13,428 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 152 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:13,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 544 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:41:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-13 17:41:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 150. [2022-12-13 17:41:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 87 states have internal predecessors, (94), 52 states have call successors, (52), 12 states have call predecessors, (52), 16 states have return successors, (72), 54 states have call predecessors, (72), 51 states have call successors, (72) [2022-12-13 17:41:13,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 218 transitions. [2022-12-13 17:41:13,441 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 218 transitions. Word has length 80 [2022-12-13 17:41:13,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:13,441 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 218 transitions. [2022-12-13 17:41:13,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-12-13 17:41:13,442 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 218 transitions. [2022-12-13 17:41:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 17:41:13,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:13,443 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-12-13 17:41:13,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 17:41:13,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:13,645 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:13,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1854673709, now seen corresponding path program 1 times [2022-12-13 17:41:13,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:13,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356701923] [2022-12-13 17:41:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:13,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:41:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:41:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 17:41:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:41:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:41:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 17:41:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 17:41:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 17:41:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356701923] [2022-12-13 17:41:14,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356701923] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222317726] [2022-12-13 17:41:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:14,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:41:14,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:41:14,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:41:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:14,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 17:41:14,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:41:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 17:41:15,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:41:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 17:41:15,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222317726] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:41:15,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:41:15,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 37 [2022-12-13 17:41:15,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586877122] [2022-12-13 17:41:15,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:41:15,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 17:41:15,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:15,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 17:41:15,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1216, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 17:41:15,541 INFO L87 Difference]: Start difference. First operand 150 states and 218 transitions. Second operand has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2022-12-13 17:41:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:16,861 INFO L93 Difference]: Finished difference Result 199 states and 297 transitions. [2022-12-13 17:41:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:41:16,862 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) Word has length 87 [2022-12-13 17:41:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:16,864 INFO L225 Difference]: With dead ends: 199 [2022-12-13 17:41:16,864 INFO L226 Difference]: Without dead ends: 184 [2022-12-13 17:41:16,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 17:41:16,865 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 199 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:16,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 367 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 17:41:16,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-13 17:41:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 164. [2022-12-13 17:41:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 91 states have internal predecessors, (99), 62 states have call successors, (62), 12 states have call predecessors, (62), 16 states have return successors, (87), 64 states have call predecessors, (87), 61 states have call successors, (87) [2022-12-13 17:41:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 248 transitions. [2022-12-13 17:41:16,881 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 248 transitions. Word has length 87 [2022-12-13 17:41:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:16,881 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 248 transitions. [2022-12-13 17:41:16,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 28 states have internal predecessors, (78), 13 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (30), 14 states have call predecessors, (30), 11 states have call successors, (30) [2022-12-13 17:41:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 248 transitions. [2022-12-13 17:41:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 17:41:16,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:16,883 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-12-13 17:41:16,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:41:17,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:17,084 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:17,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:17,084 INFO L85 PathProgramCache]: Analyzing trace with hash -108622202, now seen corresponding path program 1 times [2022-12-13 17:41:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122556990] [2022-12-13 17:41:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:41:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 17:41:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 17:41:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 17:41:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:41:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 17:41:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 17:41:17,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:17,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122556990] [2022-12-13 17:41:17,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122556990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:41:17,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:41:17,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:41:17,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806292468] [2022-12-13 17:41:17,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:41:17,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:41:17,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:17,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:41:17,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:41:17,377 INFO L87 Difference]: Start difference. First operand 164 states and 248 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 17:41:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:17,658 INFO L93 Difference]: Finished difference Result 185 states and 271 transitions. [2022-12-13 17:41:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:41:17,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2022-12-13 17:41:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:17,660 INFO L225 Difference]: With dead ends: 185 [2022-12-13 17:41:17,660 INFO L226 Difference]: Without dead ends: 162 [2022-12-13 17:41:17,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:41:17,661 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 83 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:17,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 82 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:41:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-13 17:41:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2022-12-13 17:41:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 90 states have internal predecessors, (99), 57 states have call successors, (57), 12 states have call predecessors, (57), 16 states have return successors, (77), 61 states have call predecessors, (77), 56 states have call successors, (77) [2022-12-13 17:41:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 233 transitions. [2022-12-13 17:41:17,674 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 233 transitions. Word has length 81 [2022-12-13 17:41:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:17,674 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 233 transitions. [2022-12-13 17:41:17,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 17:41:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 233 transitions. [2022-12-13 17:41:17,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 17:41:17,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:17,675 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:41:17,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:41:17,676 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1085947873, now seen corresponding path program 1 times [2022-12-13 17:41:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637327977] [2022-12-13 17:41:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:17,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:41:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:41:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:41:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:41:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 17:41:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 17:41:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:41:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:41:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 17:41:18,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:18,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637327977] [2022-12-13 17:41:18,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637327977] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:18,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30863231] [2022-12-13 17:41:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:41:18,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:41:18,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:41:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:18,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 17:41:18,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:41:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 17:41:19,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:41:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-12-13 17:41:19,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30863231] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:19,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:41:19,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17, 13] total 37 [2022-12-13 17:41:19,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190527703] [2022-12-13 17:41:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:41:19,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:41:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:41:19,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:41:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 17:41:19,559 INFO L87 Difference]: Start difference. First operand 159 states and 233 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-13 17:41:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:41:20,152 INFO L93 Difference]: Finished difference Result 206 states and 309 transitions. [2022-12-13 17:41:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 17:41:20,153 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 97 [2022-12-13 17:41:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:41:20,155 INFO L225 Difference]: With dead ends: 206 [2022-12-13 17:41:20,155 INFO L226 Difference]: Without dead ends: 177 [2022-12-13 17:41:20,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 17:41:20,156 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 163 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:41:20,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 562 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:41:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-13 17:41:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 167. [2022-12-13 17:41:20,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 93 states have internal predecessors, (103), 62 states have call successors, (62), 12 states have call predecessors, (62), 16 states have return successors, (81), 67 states have call predecessors, (81), 60 states have call successors, (81) [2022-12-13 17:41:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 246 transitions. [2022-12-13 17:41:20,170 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 246 transitions. Word has length 97 [2022-12-13 17:41:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:41:20,170 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 246 transitions. [2022-12-13 17:41:20,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-13 17:41:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 246 transitions. [2022-12-13 17:41:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 17:41:20,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:41:20,171 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:41:20,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 17:41:20,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 17:41:20,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:41:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:41:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1647697566, now seen corresponding path program 1 times [2022-12-13 17:41:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:41:20,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555677410] [2022-12-13 17:41:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:20,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:41:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:41:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:41:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:41:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:41:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:41:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:41:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 17:41:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:41:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 17:41:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 17:41:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:41:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:41:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:41:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-13 17:41:29,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:41:29,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555677410] [2022-12-13 17:41:29,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555677410] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:41:29,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063858433] [2022-12-13 17:41:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:41:29,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:41:29,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:41:29,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:41:29,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c66b36-5ecc-4087-a2d6-7d66216ec0a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:41:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:41:29,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 104 conjunts are in the unsatisfiable core [2022-12-13 17:41:29,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:41:30,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 17:41:30,309 INFO L321 Elim1Store]: treesize reduction 68, result has 34.0 percent of original size [2022-12-13 17:41:30,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 94 [2022-12-13 17:41:32,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:41:32,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2022-12-13 17:41:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-13 17:41:32,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:41:33,315 INFO L321 Elim1Store]: treesize reduction 747, result has 0.1 percent of original size [2022-12-13 17:41:33,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 179 treesize of output 1 [2022-12-13 17:41:51,196 WARN L233 SmtUtils]: Spent 16.22s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:42:08,756 WARN L233 SmtUtils]: Spent 16.22s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:42:23,667 WARN L233 SmtUtils]: Spent 14.53s on a formula simplification. DAG size of input: 297 DAG size of output: 237 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 17:42:23,668 INFO L321 Elim1Store]: treesize reduction 150, result has 81.1 percent of original size [2022-12-13 17:42:23,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 18 new quantified variables, introduced 66 case distinctions, treesize of input 114886 treesize of output 78475