./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/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_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/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_372a7588-cd96-4649-802a-7284c44a7772/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 624e111eb11fc6cb53be17248f0e61e18bd8cc958dfb511134351ecf4f085f78 --- 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 17:10:19,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:10:19,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:10:19,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:10:19,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:10:19,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:10:19,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:10:19,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:10:19,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:10:19,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:10:19,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:10:19,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:10:19,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:10:19,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:10:19,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:10:19,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:10:19,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:10:19,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:10:19,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:10:19,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:10:19,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:10:19,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:10:19,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:10:19,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:10:19,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:10:19,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:10:19,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:10:19,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:10:19,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:10:19,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:10:19,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:10:19,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:10:19,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:10:19,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:10:19,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:10:19,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:10:19,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:10:19,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:10:19,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:10:19,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:10:19,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:10:19,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 17:10:19,150 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:10:19,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:10:19,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:10:19,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:10:19,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:10:19,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:10:19,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:10:19,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:10:19,153 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:10:19,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:10:19,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:10:19,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:10:19,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:10:19,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:10:19,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:10:19,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:10:19,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:10:19,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:10:19,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:10:19,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:10:19,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:10:19,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:10:19,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:10:19,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:10:19,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:10:19,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:10:19,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:10:19,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:10:19,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:10:19,157 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:10:19,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:10:19,157 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:10:19,157 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_372a7588-cd96-4649-802a-7284c44a7772/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 624e111eb11fc6cb53be17248f0e61e18bd8cc958dfb511134351ecf4f085f78 [2022-12-13 17:10:19,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:10:19,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:10:19,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:10:19,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:10:19,377 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:10:19,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i [2022-12-13 17:10:21,971 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:10:22,277 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:10:22,278 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i [2022-12-13 17:10:22,303 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/data/e8b817fab/d184e5f2298748868958fe5569645098/FLAGfda7de5a0 [2022-12-13 17:10:22,549 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/data/e8b817fab/d184e5f2298748868958fe5569645098 [2022-12-13 17:10:22,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:10:22,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:10:22,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:10:22,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:10:22,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:10:22,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:10:22" (1/1) ... [2022-12-13 17:10:22,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1a13ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:22, skipping insertion in model container [2022-12-13 17:10:22,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:10:22" (1/1) ... [2022-12-13 17:10:22,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:10:22,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:10:22,941 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_372a7588-cd96-4649-802a-7284c44a7772/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4495,4508] [2022-12-13 17:10:22,947 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_372a7588-cd96-4649-802a-7284c44a7772/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4555,4568] [2022-12-13 17:10:23,657 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:23,661 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,662 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,662 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,663 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,664 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,666 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:23,674 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,674 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:23,674 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,675 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,676 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:23,733 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:10:23,733 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:10:23,734 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:10:23,737 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 17:10:23,739 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 17:10:23,739 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 17:10:23,959 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 17:10:23,960 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 17:10:23,961 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 17:10:23,961 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 17:10:23,962 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 17:10:23,963 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 17:10:23,964 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 17:10:23,964 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 17:10:23,965 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 17:10:23,965 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 17:10:23,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 17:10:24,086 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 17:10:24,109 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,116 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,118 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 17:10:24,126 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:10:24,133 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,138 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,138 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,139 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,148 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:10:24,154 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,154 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,158 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,163 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,196 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:10:24,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:10:24,229 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:10:24,239 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_372a7588-cd96-4649-802a-7284c44a7772/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4495,4508] [2022-12-13 17:10:24,240 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_372a7588-cd96-4649-802a-7284c44a7772/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4555,4568] [2022-12-13 17:10:24,261 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,263 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,263 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,263 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,264 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,264 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,265 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,269 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,269 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,269 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,270 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,270 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,275 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:10:24,275 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:10:24,276 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 17:10:24,278 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 17:10:24,279 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 17:10:24,279 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 17:10:24,316 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 17:10:24,317 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 17:10:24,317 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 17:10:24,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 17:10:24,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 17:10:24,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 17:10:24,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 17:10:24,319 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 17:10:24,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 17:10:24,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 17:10:24,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 17:10:24,334 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 17:10:24,344 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,348 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,349 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 17:10:24,353 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:10:24,358 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,361 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,361 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,362 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,367 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 17:10:24,372 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,372 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 17:10:24,375 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,379 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 17:10:24,392 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:10:24,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:10:24,558 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:10:24,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24 WrapperNode [2022-12-13 17:10:24,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:10:24,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:10:24,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:10:24,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:10:24,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,692 INFO L138 Inliner]: procedures = 691, calls = 2618, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 855 [2022-12-13 17:10:24,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:10:24,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:10:24,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:10:24,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:10:24,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:10:24,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:10:24,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:10:24,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:10:24,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (1/1) ... [2022-12-13 17:10:24,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:10:24,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:24,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:10:24,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:10:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-13 17:10:24,847 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-13 17:10:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:10:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 17:10:24,847 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 17:10:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:10:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 17:10:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 17:10:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:10:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:10:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 17:10:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-12-13 17:10:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-12-13 17:10:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:10:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:10:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 17:10:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 17:10:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-13 17:10:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-13 17:10:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 17:10:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 17:10:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-12-13 17:10:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-12-13 17:10:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:10:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 17:10:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-12-13 17:10:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-12-13 17:10:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 17:10:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-13 17:10:24,850 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-13 17:10:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:10:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:10:25,069 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:10:25,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:10:25,887 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:10:25,892 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:10:25,892 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:10:25,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:10:25 BoogieIcfgContainer [2022-12-13 17:10:25,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:10:25,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:10:25,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:10:25,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:10:25,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:10:22" (1/3) ... [2022-12-13 17:10:25,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d2de61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:10:25, skipping insertion in model container [2022-12-13 17:10:25,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:10:24" (2/3) ... [2022-12-13 17:10:25,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d2de61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:10:25, skipping insertion in model container [2022-12-13 17:10:25,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:10:25" (3/3) ... [2022-12-13 17:10:25,899 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_u8_harness.i [2022-12-13 17:10:25,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:10:25,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:10:25,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:10:25,953 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;@2d765e99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:10:25,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:10:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 86 states have internal predecessors, (105), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-12-13 17:10:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 17:10:25,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:25,965 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:25,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1647877052, now seen corresponding path program 1 times [2022-12-13 17:10:25,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:25,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909308253] [2022-12-13 17:10:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:10:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 17:10:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:10:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 17:10:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:10:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:10:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 17:10:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-13 17:10:26,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909308253] [2022-12-13 17:10:26,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909308253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:26,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:10:26,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:10:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341114086] [2022-12-13 17:10:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:26,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:10:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:10:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:10:26,467 INFO L87 Difference]: Start difference. First operand has 131 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 86 states have internal predecessors, (105), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 17:10:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:26,740 INFO L93 Difference]: Finished difference Result 258 states and 367 transitions. [2022-12-13 17:10:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:10:26,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 85 [2022-12-13 17:10:26,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:26,750 INFO L225 Difference]: With dead ends: 258 [2022-12-13 17:10:26,750 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 17:10:26,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:10:26,757 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 75 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:26,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 115 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:10:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 17:10:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-12-13 17:10:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 82 states have internal predecessors, (98), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-12-13 17:10:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 165 transitions. [2022-12-13 17:10:26,805 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 165 transitions. Word has length 85 [2022-12-13 17:10:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:26,806 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 165 transitions. [2022-12-13 17:10:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 17:10:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 165 transitions. [2022-12-13 17:10:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 17:10:26,810 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:26,810 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:10:26,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash -905040328, now seen corresponding path program 1 times [2022-12-13 17:10:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:26,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120340981] [2022-12-13 17:10:26,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:26,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:10:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 17:10:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:10:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 17:10:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:10:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:10:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 17:10:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 17:10:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:27,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120340981] [2022-12-13 17:10:27,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120340981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:27,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280668927] [2022-12-13 17:10:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:27,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:27,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:27,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:27,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:10:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:27,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 2595 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:10:27,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 17:10:28,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:10:28,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280668927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:28,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:10:28,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-12-13 17:10:28,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967177270] [2022-12-13 17:10:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:28,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:10:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:10:28,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:10:28,040 INFO L87 Difference]: Start difference. First operand 126 states and 165 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 17:10:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:28,218 INFO L93 Difference]: Finished difference Result 230 states and 309 transitions. [2022-12-13 17:10:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:10:28,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2022-12-13 17:10:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:28,222 INFO L225 Difference]: With dead ends: 230 [2022-12-13 17:10:28,222 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 17:10:28,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:10:28,224 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 190 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:28,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 468 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:10:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 17:10:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-12-13 17:10:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 85 states have internal predecessors, (100), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2022-12-13 17:10:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2022-12-13 17:10:28,242 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 85 [2022-12-13 17:10:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:28,243 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2022-12-13 17:10:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 17:10:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2022-12-13 17:10:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 17:10:28,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:28,245 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:28,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:10:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:28,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1139705187, now seen corresponding path program 1 times [2022-12-13 17:10:28,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:28,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813606238] [2022-12-13 17:10:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:28,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:10:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:10:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:10:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:10:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:10:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:10:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 17:10:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 17:10:28,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:28,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813606238] [2022-12-13 17:10:28,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813606238] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:28,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034520676] [2022-12-13 17:10:28,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:28,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:28,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:28,945 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:10:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:29,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:10:29,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 17:10:29,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:10:29,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034520676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:29,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:10:29,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 17:10:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916328711] [2022-12-13 17:10:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:10:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:10:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:10:29,439 INFO L87 Difference]: Start difference. First operand 129 states and 171 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:10:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:29,591 INFO L93 Difference]: Finished difference Result 225 states and 300 transitions. [2022-12-13 17:10:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:10:29,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2022-12-13 17:10:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:29,593 INFO L225 Difference]: With dead ends: 225 [2022-12-13 17:10:29,593 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 17:10:29,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:10:29,595 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 206 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:29,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 471 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:10:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 17:10:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-12-13 17:10:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 85 states have internal predecessors, (100), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-12-13 17:10:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 170 transitions. [2022-12-13 17:10:29,609 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 170 transitions. Word has length 91 [2022-12-13 17:10:29,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:29,609 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 170 transitions. [2022-12-13 17:10:29,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:10:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 170 transitions. [2022-12-13 17:10:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 17:10:29,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:29,611 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:29,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 17:10:29,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:29,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:29,813 INFO L85 PathProgramCache]: Analyzing trace with hash 928728782, now seen corresponding path program 2 times [2022-12-13 17:10:29,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:29,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885425040] [2022-12-13 17:10:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:29,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:10:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:10:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 17:10:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:10:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:10:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:10:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 17:10:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 17:10:30,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:30,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885425040] [2022-12-13 17:10:30,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885425040] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:30,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401939472] [2022-12-13 17:10:30,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:10:30,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:30,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:10:30,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:10:30,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:10:30,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:10:30,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 17:10:30,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:10:30,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401939472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:30,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:10:30,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-12-13 17:10:30,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537913026] [2022-12-13 17:10:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:30,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:10:30,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:30,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:10:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:10:30,904 INFO L87 Difference]: Start difference. First operand 129 states and 170 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:10:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:31,162 INFO L93 Difference]: Finished difference Result 220 states and 291 transitions. [2022-12-13 17:10:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:10:31,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 97 [2022-12-13 17:10:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:31,164 INFO L225 Difference]: With dead ends: 220 [2022-12-13 17:10:31,164 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 17:10:31,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-12-13 17:10:31,165 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 213 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:31,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 740 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:10:31,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 17:10:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-12-13 17:10:31,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 82 states have internal predecessors, (97), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-12-13 17:10:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2022-12-13 17:10:31,174 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 97 [2022-12-13 17:10:31,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:31,175 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2022-12-13 17:10:31,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 17:10:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2022-12-13 17:10:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 17:10:31,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:31,176 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:31,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:10:31,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:31,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:31,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1868612388, now seen corresponding path program 1 times [2022-12-13 17:10:31,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:31,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76700113] [2022-12-13 17:10:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:31,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:31,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:10:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:10:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 17:10:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:10:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:10:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:10:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 17:10:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-13 17:10:32,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:32,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76700113] [2022-12-13 17:10:32,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76700113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:32,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:10:32,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:10:32,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184832886] [2022-12-13 17:10:32,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:32,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:10:32,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:32,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:10:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:10:32,131 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 17:10:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:32,634 INFO L93 Difference]: Finished difference Result 138 states and 181 transitions. [2022-12-13 17:10:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:10:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 109 [2022-12-13 17:10:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:32,636 INFO L225 Difference]: With dead ends: 138 [2022-12-13 17:10:32,637 INFO L226 Difference]: Without dead ends: 136 [2022-12-13 17:10:32,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:10:32,638 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 104 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:32,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 447 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:10:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-13 17:10:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2022-12-13 17:10:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 89 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-12-13 17:10:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2022-12-13 17:10:32,652 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 109 [2022-12-13 17:10:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:32,653 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2022-12-13 17:10:32,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 17:10:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2022-12-13 17:10:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 17:10:32,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:32,654 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:32,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:10:32,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:32,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash 581206572, now seen corresponding path program 1 times [2022-12-13 17:10:32,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:32,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869272534] [2022-12-13 17:10:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:10:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:10:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 17:10:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:33,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:10:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:10:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:10:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 17:10:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 17:10:34,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:34,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869272534] [2022-12-13 17:10:34,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869272534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:34,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544290322] [2022-12-13 17:10:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:34,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:34,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:34,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:34,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:10:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:34,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:10:34,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 17:10:34,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:10:34,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544290322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:34,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:10:34,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-12-13 17:10:34,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61637635] [2022-12-13 17:10:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:34,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:10:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:10:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:10:34,725 INFO L87 Difference]: Start difference. First operand 135 states and 178 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 17:10:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:35,208 INFO L93 Difference]: Finished difference Result 263 states and 366 transitions. [2022-12-13 17:10:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:10:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2022-12-13 17:10:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:35,209 INFO L225 Difference]: With dead ends: 263 [2022-12-13 17:10:35,210 INFO L226 Difference]: Without dead ends: 153 [2022-12-13 17:10:35,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:10:35,211 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 40 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:35,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 556 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:10:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-13 17:10:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2022-12-13 17:10:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 94 states have internal predecessors, (110), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-12-13 17:10:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2022-12-13 17:10:35,220 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 113 [2022-12-13 17:10:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:35,220 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2022-12-13 17:10:35,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 17:10:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2022-12-13 17:10:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 17:10:35,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:35,222 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:35,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:10:35,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:35,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:35,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash 839372010, now seen corresponding path program 1 times [2022-12-13 17:10:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:35,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757728222] [2022-12-13 17:10:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:35,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:10:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:10:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 17:10:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:10:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:10:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:10:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 17:10:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 17:10:36,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:36,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757728222] [2022-12-13 17:10:36,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757728222] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:36,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231444067] [2022-12-13 17:10:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:36,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:36,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:36,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:36,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:10:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:36,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 17:10:36,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:36,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:10:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 17:10:37,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:10:37,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231444067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:37,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:10:37,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-12-13 17:10:37,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284579821] [2022-12-13 17:10:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:37,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:10:37,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:37,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:10:37,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-12-13 17:10:37,227 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 17:10:39,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:10:41,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:10:43,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:10:46,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:10:48,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:10:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:48,355 INFO L93 Difference]: Finished difference Result 360 states and 482 transitions. [2022-12-13 17:10:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 17:10:48,355 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 113 [2022-12-13 17:10:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:48,357 INFO L225 Difference]: With dead ends: 360 [2022-12-13 17:10:48,357 INFO L226 Difference]: Without dead ends: 245 [2022-12-13 17:10:48,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:10:48,358 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 169 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 50 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:48,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1309 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 558 Invalid, 5 Unknown, 0 Unchecked, 10.9s Time] [2022-12-13 17:10:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-12-13 17:10:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2022-12-13 17:10:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 160 states have (on average 1.2125) internal successors, (194), 165 states have internal predecessors, (194), 60 states have call successors, (60), 19 states have call predecessors, (60), 21 states have return successors, (70), 57 states have call predecessors, (70), 58 states have call successors, (70) [2022-12-13 17:10:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 324 transitions. [2022-12-13 17:10:48,374 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 324 transitions. Word has length 113 [2022-12-13 17:10:48,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:48,374 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 324 transitions. [2022-12-13 17:10:48,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 17:10:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 324 transitions. [2022-12-13 17:10:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 17:10:48,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:48,375 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 17:10:48,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:10:48,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 17:10:48,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1302315312, now seen corresponding path program 2 times [2022-12-13 17:10:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:48,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758026710] [2022-12-13 17:10:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 17:10:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:10:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 17:10:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:10:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 17:10:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 17:10:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 17:10:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 17:10:49,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:49,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758026710] [2022-12-13 17:10:49,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758026710] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:49,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132566901] [2022-12-13 17:10:49,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:10:49,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:49,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:49,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:49,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:10:50,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:10:50,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:10:50,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 17:10:50,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 90 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 17:10:51,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:10:51,378 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-13 17:10:51,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-12-13 17:10:51,387 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-12-13 17:10:51,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-12-13 17:10:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 17:10:51,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132566901] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:10:51,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:10:51,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 13] total 28 [2022-12-13 17:10:51,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931326014] [2022-12-13 17:10:51,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:10:51,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 17:10:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 17:10:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-12-13 17:10:51,409 INFO L87 Difference]: Start difference. First operand 242 states and 324 transitions. Second operand has 28 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 25 states have internal predecessors, (115), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2022-12-13 17:10:53,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:10:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:57,308 INFO L93 Difference]: Finished difference Result 886 states and 1252 transitions. [2022-12-13 17:10:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-13 17:10:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 25 states have internal predecessors, (115), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 117 [2022-12-13 17:10:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:57,312 INFO L225 Difference]: With dead ends: 886 [2022-12-13 17:10:57,312 INFO L226 Difference]: Without dead ends: 669 [2022-12-13 17:10:57,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 241 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=873, Invalid=4677, Unknown=0, NotChecked=0, Total=5550 [2022-12-13 17:10:57,314 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 500 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 145 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 3775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:57,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 806 Invalid, 3775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3629 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 17:10:57,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-12-13 17:10:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 503. [2022-12-13 17:10:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 345 states have (on average 1.2492753623188406) internal successors, (431), 352 states have internal predecessors, (431), 117 states have call successors, (117), 35 states have call predecessors, (117), 40 states have return successors, (148), 115 states have call predecessors, (148), 113 states have call successors, (148) [2022-12-13 17:10:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 696 transitions. [2022-12-13 17:10:57,349 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 696 transitions. Word has length 117 [2022-12-13 17:10:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:57,349 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 696 transitions. [2022-12-13 17:10:57,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 25 states have internal predecessors, (115), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2022-12-13 17:10:57,350 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 696 transitions. [2022-12-13 17:10:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 17:10:57,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:57,351 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:57,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:10:57,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 17:10:57,553 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:57,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:57,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1210158377, now seen corresponding path program 1 times [2022-12-13 17:10:57,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:57,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917352665] [2022-12-13 17:10:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:57,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:10:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:10:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 17:10:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:10:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:10:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 17:10:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 17:10:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-12-13 17:10:57,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:57,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917352665] [2022-12-13 17:10:57,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917352665] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:57,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525739829] [2022-12-13 17:10:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:57,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:57,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:57,790 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:57,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:10:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:10:58,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-13 17:10:58,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:10:58,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525739829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:58,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:10:58,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-13 17:10:58,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267311299] [2022-12-13 17:10:58,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:58,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:10:58,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:58,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:10:58,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:10:58,148 INFO L87 Difference]: Start difference. First operand 503 states and 696 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 17:10:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:58,184 INFO L93 Difference]: Finished difference Result 1026 states and 1444 transitions. [2022-12-13 17:10:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:10:58,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-12-13 17:10:58,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:58,186 INFO L225 Difference]: With dead ends: 1026 [2022-12-13 17:10:58,186 INFO L226 Difference]: Without dead ends: 548 [2022-12-13 17:10:58,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:10:58,188 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 9 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:58,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 480 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:10:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-12-13 17:10:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 515. [2022-12-13 17:10:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 357 states have (on average 1.2408963585434174) internal successors, (443), 364 states have internal predecessors, (443), 117 states have call successors, (117), 35 states have call predecessors, (117), 40 states have return successors, (148), 115 states have call predecessors, (148), 113 states have call successors, (148) [2022-12-13 17:10:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 708 transitions. [2022-12-13 17:10:58,214 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 708 transitions. Word has length 119 [2022-12-13 17:10:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:58,215 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 708 transitions. [2022-12-13 17:10:58,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 17:10:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 708 transitions. [2022-12-13 17:10:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 17:10:58,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:58,216 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-12-13 17:10:58,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:10:58,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:58,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:58,419 INFO L85 PathProgramCache]: Analyzing trace with hash -101760997, now seen corresponding path program 1 times [2022-12-13 17:10:58,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:58,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876772126] [2022-12-13 17:10:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:58,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:10:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:10:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 17:10:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:10:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:10:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 17:10:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 17:10:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 17:10:58,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:58,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876772126] [2022-12-13 17:10:58,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876772126] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:58,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411728965] [2022-12-13 17:10:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:58,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:58,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:58,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:10:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:58,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:10:58,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 17:10:58,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:10:58,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411728965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:58,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:10:58,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-13 17:10:58,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222930373] [2022-12-13 17:10:58,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:58,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:10:58,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:10:58,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:10:58,972 INFO L87 Difference]: Start difference. First operand 515 states and 708 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 17:10:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:10:59,007 INFO L93 Difference]: Finished difference Result 1075 states and 1506 transitions. [2022-12-13 17:10:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:10:59,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-12-13 17:10:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:10:59,009 INFO L225 Difference]: With dead ends: 1075 [2022-12-13 17:10:59,009 INFO L226 Difference]: Without dead ends: 585 [2022-12-13 17:10:59,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:10:59,011 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 28 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:10:59,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 495 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:10:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-12-13 17:10:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 515. [2022-12-13 17:10:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 357 states have (on average 1.2240896358543418) internal successors, (437), 364 states have internal predecessors, (437), 117 states have call successors, (117), 35 states have call predecessors, (117), 40 states have return successors, (148), 115 states have call predecessors, (148), 113 states have call successors, (148) [2022-12-13 17:10:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 702 transitions. [2022-12-13 17:10:59,037 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 702 transitions. Word has length 119 [2022-12-13 17:10:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:10:59,037 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 702 transitions. [2022-12-13 17:10:59,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 17:10:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 702 transitions. [2022-12-13 17:10:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 17:10:59,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:10:59,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:59,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:10:59,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:10:59,241 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:10:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash -688037219, now seen corresponding path program 2 times [2022-12-13 17:10:59,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:59,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985517454] [2022-12-13 17:10:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:59,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:10:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:10:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:10:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:10:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:10:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:10:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:10:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 17:10:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:59,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:10:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:00,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:11:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 17:11:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 17:11:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 17:11:00,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:00,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985517454] [2022-12-13 17:11:00,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985517454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:11:00,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869959739] [2022-12-13 17:11:00,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:11:00,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:00,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:11:00,230 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:11:00,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:11:00,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:11:00,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:11:00,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 17:11:00,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:11:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 17:11:01,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:11:01,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-13 17:11:01,908 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-13 17:11:01,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-13 17:11:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 17:11:01,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869959739] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:11:01,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:11:01,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 26 [2022-12-13 17:11:01,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262156116] [2022-12-13 17:11:01,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:11:01,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:11:01,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:11:01,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:11:01,930 INFO L87 Difference]: Start difference. First operand 515 states and 702 transitions. Second operand has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 24 states have internal predecessors, (112), 4 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 17:11:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:11:04,936 INFO L93 Difference]: Finished difference Result 1794 states and 2567 transitions. [2022-12-13 17:11:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 17:11:04,937 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 24 states have internal predecessors, (112), 4 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 119 [2022-12-13 17:11:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:11:04,948 INFO L225 Difference]: With dead ends: 1794 [2022-12-13 17:11:04,948 INFO L226 Difference]: Without dead ends: 1334 [2022-12-13 17:11:04,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 241 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=443, Invalid=1813, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 17:11:04,952 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 525 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:11:04,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 437 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 17:11:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2022-12-13 17:11:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1126. [2022-12-13 17:11:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 785 states have (on average 1.2292993630573248) internal successors, (965), 801 states have internal predecessors, (965), 251 states have call successors, (251), 69 states have call predecessors, (251), 89 states have return successors, (375), 255 states have call predecessors, (375), 243 states have call successors, (375) [2022-12-13 17:11:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1591 transitions. [2022-12-13 17:11:05,060 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1591 transitions. Word has length 119 [2022-12-13 17:11:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:11:05,061 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1591 transitions. [2022-12-13 17:11:05,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 24 states have internal predecessors, (112), 4 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 17:11:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1591 transitions. [2022-12-13 17:11:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 17:11:05,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:11:05,063 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:11:05,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 17:11:05,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:05,264 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:11:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1760416737, now seen corresponding path program 1 times [2022-12-13 17:11:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:05,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127161538] [2022-12-13 17:11:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:11:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:11:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:11:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:11:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:11:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:11:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:11:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 17:11:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:11:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:11:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 17:11:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 17:11:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 17:11:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127161538] [2022-12-13 17:11:06,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127161538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:11:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625369977] [2022-12-13 17:11:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:06,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:06,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:11:06,229 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:11:06,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:11:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:06,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2676 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 17:11:06,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:11:06,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:11:06,818 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 17:11:06,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-12-13 17:11:07,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-13 17:11:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 55 proven. 58 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 17:11:07,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:11:08,132 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-13 17:11:08,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-12-13 17:11:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 17:11:08,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625369977] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:11:08,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:11:08,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 12] total 40 [2022-12-13 17:11:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362688826] [2022-12-13 17:11:08,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:11:08,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 17:11:08,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 17:11:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1417, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 17:11:08,181 INFO L87 Difference]: Start difference. First operand 1126 states and 1591 transitions. Second operand has 40 states, 39 states have (on average 4.128205128205129) internal successors, (161), 37 states have internal predecessors, (161), 10 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) [2022-12-13 17:11:12,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:14,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:16,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:28,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:30,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:32,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:36,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:11:38,003 INFO L93 Difference]: Finished difference Result 3030 states and 4297 transitions. [2022-12-13 17:11:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-12-13 17:11:38,004 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.128205128205129) internal successors, (161), 37 states have internal predecessors, (161), 10 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) Word has length 119 [2022-12-13 17:11:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:11:38,014 INFO L225 Difference]: With dead ends: 3030 [2022-12-13 17:11:38,014 INFO L226 Difference]: Without dead ends: 2104 [2022-12-13 17:11:38,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 254 SyntacticMatches, 7 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9374 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=3668, Invalid=25744, Unknown=0, NotChecked=0, Total=29412 [2022-12-13 17:11:38,025 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1157 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 7866 mSolverCounterSat, 1272 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 9145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 7866 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:11:38,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 891 Invalid, 9145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1272 Valid, 7866 Invalid, 7 Unknown, 0 Unchecked, 21.0s Time] [2022-12-13 17:11:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2022-12-13 17:11:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 1862. [2022-12-13 17:11:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1331 states have (on average 1.202854996243426) internal successors, (1601), 1361 states have internal predecessors, (1601), 382 states have call successors, (382), 107 states have call predecessors, (382), 148 states have return successors, (622), 393 states have call predecessors, (622), 367 states have call successors, (622) [2022-12-13 17:11:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2605 transitions. [2022-12-13 17:11:38,235 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2605 transitions. Word has length 119 [2022-12-13 17:11:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:11:38,235 INFO L495 AbstractCegarLoop]: Abstraction has 1862 states and 2605 transitions. [2022-12-13 17:11:38,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.128205128205129) internal successors, (161), 37 states have internal predecessors, (161), 10 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) [2022-12-13 17:11:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2605 transitions. [2022-12-13 17:11:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 17:11:38,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:11:38,238 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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 17:11:38,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 17:11:38,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:38,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:11:38,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:38,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1697184161, now seen corresponding path program 1 times [2022-12-13 17:11:38,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:38,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608044099] [2022-12-13 17:11:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:38,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:11:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:11:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:11:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:11:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:11:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:11:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:11:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 17:11:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:11:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:11:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 17:11:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 17:11:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-13 17:11:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:38,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608044099] [2022-12-13 17:11:38,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608044099] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:11:38,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046249001] [2022-12-13 17:11:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:38,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:11:38,623 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:11:38,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:11:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:38,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:11:38,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:11:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 17:11:38,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:11:38,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046249001] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:11:38,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:11:38,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-13 17:11:38,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862815955] [2022-12-13 17:11:38,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:11:38,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:11:38,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:11:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:11:38,943 INFO L87 Difference]: Start difference. First operand 1862 states and 2605 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 17:11:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:11:39,029 INFO L93 Difference]: Finished difference Result 2530 states and 3484 transitions. [2022-12-13 17:11:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:11:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-12-13 17:11:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:11:39,034 INFO L225 Difference]: With dead ends: 2530 [2022-12-13 17:11:39,035 INFO L226 Difference]: Without dead ends: 1438 [2022-12-13 17:11:39,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:11:39,037 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 20 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:11:39,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 474 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:11:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-12-13 17:11:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1414. [2022-12-13 17:11:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1008 states have (on average 1.193452380952381) internal successors, (1203), 1025 states have internal predecessors, (1203), 297 states have call successors, (297), 84 states have call predecessors, (297), 108 states have return successors, (445), 304 states have call predecessors, (445), 285 states have call successors, (445) [2022-12-13 17:11:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1945 transitions. [2022-12-13 17:11:39,131 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1945 transitions. Word has length 119 [2022-12-13 17:11:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:11:39,131 INFO L495 AbstractCegarLoop]: Abstraction has 1414 states and 1945 transitions. [2022-12-13 17:11:39,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 17:11:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1945 transitions. [2022-12-13 17:11:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 17:11:39,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:11:39,134 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 17:11:39,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:11:39,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 17:11:39,334 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:11:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash -415458067, now seen corresponding path program 2 times [2022-12-13 17:11:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:39,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561698160] [2022-12-13 17:11:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:11:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:11:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:11:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:11:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:11:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:11:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:11:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 17:11:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:11:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 17:11:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 17:11:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 17:11:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-12-13 17:11:40,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:40,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561698160] [2022-12-13 17:11:40,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561698160] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:11:40,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209792026] [2022-12-13 17:11:40,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:11:40,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:40,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:11:40,380 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:11:40,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 17:11:40,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:11:40,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:11:40,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-13 17:11:40,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:11:40,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:11:41,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:11:41,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-12-13 17:11:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 17:11:41,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:11:41,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209792026] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:11:41,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:11:41,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2022-12-13 17:11:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173897234] [2022-12-13 17:11:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:11:41,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:11:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:11:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-12-13 17:11:41,220 INFO L87 Difference]: Start difference. First operand 1414 states and 1945 transitions. Second operand has 13 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-13 17:11:43,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:45,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:47,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:49,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:51,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:11:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:11:52,189 INFO L93 Difference]: Finished difference Result 2018 states and 2705 transitions. [2022-12-13 17:11:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:11:52,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 123 [2022-12-13 17:11:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:11:52,194 INFO L225 Difference]: With dead ends: 2018 [2022-12-13 17:11:52,194 INFO L226 Difference]: Without dead ends: 1373 [2022-12-13 17:11:52,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-12-13 17:11:52,196 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 172 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 46 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:11:52,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1139 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 548 Invalid, 5 Unknown, 0 Unchecked, 10.7s Time] [2022-12-13 17:11:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-12-13 17:11:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1371. [2022-12-13 17:11:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 978 states have (on average 1.19120654396728) internal successors, (1165), 995 states have internal predecessors, (1165), 286 states have call successors, (286), 82 states have call predecessors, (286), 106 states have return successors, (424), 293 states have call predecessors, (424), 274 states have call successors, (424) [2022-12-13 17:11:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1875 transitions. [2022-12-13 17:11:52,290 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1875 transitions. Word has length 123 [2022-12-13 17:11:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:11:52,290 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1875 transitions. [2022-12-13 17:11:52,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-13 17:11:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1875 transitions. [2022-12-13 17:11:52,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 17:11:52,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:11:52,292 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:52,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 17:11:52,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 17:11:52,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:11:52,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1486885287, now seen corresponding path program 1 times [2022-12-13 17:11:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:52,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716256566] [2022-12-13 17:11:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:52,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:11:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:11:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:11:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:11:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:11:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:11:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:11:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 17:11:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 17:11:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 17:11:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 17:11:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 17:11:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-12-13 17:11:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716256566] [2022-12-13 17:11:52,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716256566] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:11:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205975918] [2022-12-13 17:11:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:52,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:52,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:11:52,985 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:11:52,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 17:11:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:53,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 17:11:53,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:11:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 17:11:53,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:11:53,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205975918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:11:53,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:11:53,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-12-13 17:11:53,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404541693] [2022-12-13 17:11:53,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:11:53,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:11:53,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:11:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:11:53,350 INFO L87 Difference]: Start difference. First operand 1371 states and 1875 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 17:11:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:11:53,525 INFO L93 Difference]: Finished difference Result 2584 states and 3453 transitions. [2022-12-13 17:11:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:11:53,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 127 [2022-12-13 17:11:53,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:11:53,529 INFO L225 Difference]: With dead ends: 2584 [2022-12-13 17:11:53,529 INFO L226 Difference]: Without dead ends: 1295 [2022-12-13 17:11:53,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:11:53,532 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 13 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:11:53,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1192 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:11:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-12-13 17:11:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1240. [2022-12-13 17:11:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 895 states have (on average 1.182122905027933) internal successors, (1058), 914 states have internal predecessors, (1058), 244 states have call successors, (244), 76 states have call predecessors, (244), 100 states have return successors, (331), 249 states have call predecessors, (331), 232 states have call successors, (331) [2022-12-13 17:11:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1633 transitions. [2022-12-13 17:11:53,615 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1633 transitions. Word has length 127 [2022-12-13 17:11:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:11:53,616 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1633 transitions. [2022-12-13 17:11:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 17:11:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1633 transitions. [2022-12-13 17:11:53,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 17:11:53,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:11:53,617 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:11:53,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 17:11:53,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:11:53,818 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:11:53,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:53,818 INFO L85 PathProgramCache]: Analyzing trace with hash 566248654, now seen corresponding path program 1 times [2022-12-13 17:11:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:53,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159852791] [2022-12-13 17:11:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:53,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:11:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:11:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:11:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:11:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:11:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:11:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:11:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:11:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:11:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 17:11:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 17:11:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 17:11:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 17:11:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 24 proven. 32 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-12-13 17:11:54,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:54,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159852791] [2022-12-13 17:11:54,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159852791] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:11:54,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412301297] [2022-12-13 17:11:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:54,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:54,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:11:54,865 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:11:54,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 17:11:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:55,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 17:11:55,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:11:55,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-13 17:11:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-12-13 17:11:55,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:11:55,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412301297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:11:55,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:11:55,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 18 [2022-12-13 17:11:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122315571] [2022-12-13 17:11:55,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:11:55,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:11:55,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:11:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:11:55,380 INFO L87 Difference]: Start difference. First operand 1240 states and 1633 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 17:11:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:11:55,987 INFO L93 Difference]: Finished difference Result 2184 states and 2956 transitions. [2022-12-13 17:11:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:11:55,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2022-12-13 17:11:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:11:55,992 INFO L225 Difference]: With dead ends: 2184 [2022-12-13 17:11:55,992 INFO L226 Difference]: Without dead ends: 1668 [2022-12-13 17:11:55,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:11:55,994 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 89 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:11:55,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1066 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:11:55,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-12-13 17:11:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1322. [2022-12-13 17:11:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 962 states have (on average 1.1694386694386694) internal successors, (1125), 991 states have internal predecessors, (1125), 246 states have call successors, (246), 78 states have call predecessors, (246), 113 states have return successors, (355), 252 states have call predecessors, (355), 233 states have call successors, (355) [2022-12-13 17:11:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1726 transitions. [2022-12-13 17:11:56,089 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1726 transitions. Word has length 130 [2022-12-13 17:11:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:11:56,089 INFO L495 AbstractCegarLoop]: Abstraction has 1322 states and 1726 transitions. [2022-12-13 17:11:56,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 17:11:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1726 transitions. [2022-12-13 17:11:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 17:11:56,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:11:56,091 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:11:56,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 17:11:56,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:11:56,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:11:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash 893500754, now seen corresponding path program 2 times [2022-12-13 17:11:56,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:56,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562592294] [2022-12-13 17:11:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:56,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:11:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:11:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:11:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:11:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:11:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:11:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:11:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:11:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:11:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 17:11:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 17:11:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 17:11:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-13 17:11:56,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:56,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562592294] [2022-12-13 17:11:56,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562592294] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:11:56,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324693845] [2022-12-13 17:11:56,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:11:56,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:56,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:11:56,833 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:11:56,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 17:11:57,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:11:57,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:11:57,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-13 17:11:57,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:11:57,425 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 17:11:57,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-12-13 17:11:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 54 proven. 52 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 17:11:58,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:11:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 44 proven. 28 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 17:11:58,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324693845] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:11:58,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:11:58,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 11] total 31 [2022-12-13 17:11:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382979476] [2022-12-13 17:11:58,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:11:58,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 17:11:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 17:11:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-12-13 17:11:58,530 INFO L87 Difference]: Start difference. First operand 1322 states and 1726 transitions. Second operand has 31 states, 29 states have (on average 4.931034482758621) internal successors, (143), 27 states have internal predecessors, (143), 10 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (29), 9 states have call predecessors, (29), 10 states have call successors, (29) [2022-12-13 17:12:00,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:02,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:04,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:07,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:09,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:11,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:15,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:17,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:12:19,175 INFO L93 Difference]: Finished difference Result 2484 states and 3155 transitions. [2022-12-13 17:12:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-13 17:12:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 4.931034482758621) internal successors, (143), 27 states have internal predecessors, (143), 10 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (29), 9 states have call predecessors, (29), 10 states have call successors, (29) Word has length 129 [2022-12-13 17:12:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:12:19,178 INFO L225 Difference]: With dead ends: 2484 [2022-12-13 17:12:19,178 INFO L226 Difference]: Without dead ends: 1177 [2022-12-13 17:12:19,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 259 SyntacticMatches, 10 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=646, Invalid=4756, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 17:12:19,181 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 387 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 6039 mSolverCounterSat, 193 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 6240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 6039 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:12:19,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1215 Invalid, 6240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 6039 Invalid, 8 Unknown, 0 Unchecked, 19.5s Time] [2022-12-13 17:12:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-12-13 17:12:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 870. [2022-12-13 17:12:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 646 states have (on average 1.1640866873065014) internal successors, (752), 666 states have internal predecessors, (752), 148 states have call successors, (148), 51 states have call predecessors, (148), 75 states have return successors, (204), 152 states have call predecessors, (204), 141 states have call successors, (204) [2022-12-13 17:12:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1104 transitions. [2022-12-13 17:12:19,237 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1104 transitions. Word has length 129 [2022-12-13 17:12:19,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:12:19,238 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1104 transitions. [2022-12-13 17:12:19,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 4.931034482758621) internal successors, (143), 27 states have internal predecessors, (143), 10 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (29), 9 states have call predecessors, (29), 10 states have call successors, (29) [2022-12-13 17:12:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1104 transitions. [2022-12-13 17:12:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 17:12:19,239 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:12:19,239 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:12:19,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 17:12:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 17:12:19,440 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:12:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:12:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash 235728515, now seen corresponding path program 1 times [2022-12-13 17:12:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:12:19,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947015395] [2022-12-13 17:12:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:12:19,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:12:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:12:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:12:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:12:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:12:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:12:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:12:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:12:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:12:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:12:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 17:12:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 17:12:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 17:12:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-12-13 17:12:20,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:12:20,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947015395] [2022-12-13 17:12:20,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947015395] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:12:20,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42225063] [2022-12-13 17:12:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:12:20,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:12:20,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:12:20,485 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:12:20,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 17:12:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:20,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 101 conjunts are in the unsatisfiable core [2022-12-13 17:12:20,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:12:20,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:12:21,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-12-13 17:12:21,413 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 17:12:21,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2022-12-13 17:12:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 55 proven. 92 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:12:22,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:12:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 17:12:23,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42225063] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:12:23,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:12:23,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 30, 12] total 46 [2022-12-13 17:12:23,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361609758] [2022-12-13 17:12:23,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:12:23,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 17:12:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:12:23,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 17:12:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1889, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 17:12:23,172 INFO L87 Difference]: Start difference. First operand 870 states and 1104 transitions. Second operand has 46 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 40 states have internal predecessors, (160), 13 states have call successors, (33), 9 states have call predecessors, (33), 10 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) [2022-12-13 17:12:28,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:31,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:33,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:45,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:47,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:50,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:52,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:58,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:12:58,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:12:58,399 INFO L93 Difference]: Finished difference Result 2429 states and 3087 transitions. [2022-12-13 17:12:58,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 17:12:58,400 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 40 states have internal predecessors, (160), 13 states have call successors, (33), 9 states have call predecessors, (33), 10 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) Word has length 131 [2022-12-13 17:12:58,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:12:58,404 INFO L225 Difference]: With dead ends: 2429 [2022-12-13 17:12:58,404 INFO L226 Difference]: Without dead ends: 1684 [2022-12-13 17:12:58,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 266 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6819 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2807, Invalid=19245, Unknown=0, NotChecked=0, Total=22052 [2022-12-13 17:12:58,408 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1068 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 9855 mSolverCounterSat, 958 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 10821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 9855 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:12:58,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1117 Invalid, 10821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [958 Valid, 9855 Invalid, 8 Unknown, 0 Unchecked, 27.6s Time] [2022-12-13 17:12:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-12-13 17:12:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1520. [2022-12-13 17:12:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1137 states have (on average 1.1600703605980651) internal successors, (1319), 1169 states have internal predecessors, (1319), 256 states have call successors, (256), 87 states have call predecessors, (256), 126 states have return successors, (360), 263 states have call predecessors, (360), 245 states have call successors, (360) [2022-12-13 17:12:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 1935 transitions. [2022-12-13 17:12:58,504 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 1935 transitions. Word has length 131 [2022-12-13 17:12:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:12:58,504 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 1935 transitions. [2022-12-13 17:12:58,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 40 states have internal predecessors, (160), 13 states have call successors, (33), 9 states have call predecessors, (33), 10 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) [2022-12-13 17:12:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 1935 transitions. [2022-12-13 17:12:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 17:12:58,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:12:58,506 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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 17:12:58,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 17:12:58,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:12:58,707 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:12:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:12:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash -556778489, now seen corresponding path program 1 times [2022-12-13 17:12:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:12:58,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730951288] [2022-12-13 17:12:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:12:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:12:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:13:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:13:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:13:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:13:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:13:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:13:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:13:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:13:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:13:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 17:13:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 17:13:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 17:13:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-13 17:13:00,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:00,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730951288] [2022-12-13 17:13:00,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730951288] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:00,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286434461] [2022-12-13 17:13:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:00,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:00,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:00,873 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:00,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 17:13:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:01,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 86 conjunts are in the unsatisfiable core [2022-12-13 17:13:01,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:01,481 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 17:13:01,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-12-13 17:13:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 67 proven. 64 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:13:13,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 44 proven. 30 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 17:13:14,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286434461] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:14,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:14,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21, 14] total 46 [2022-12-13 17:13:14,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329054112] [2022-12-13 17:13:14,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:14,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 17:13:14,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:14,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 17:13:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1904, Unknown=1, NotChecked=0, Total=2070 [2022-12-13 17:13:14,177 INFO L87 Difference]: Start difference. First operand 1520 states and 1935 transitions. Second operand has 46 states, 44 states have (on average 4.113636363636363) internal successors, (181), 42 states have internal predecessors, (181), 15 states have call successors, (39), 8 states have call predecessors, (39), 10 states have return successors, (35), 13 states have call predecessors, (35), 15 states have call successors, (35) [2022-12-13 17:13:16,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:18,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:20,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:22,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:24,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:26,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:29,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:32,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:34,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:36,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:38,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:40,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:45,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:49,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:53,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:55,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:13:58,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:14:00,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:14:02,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:14:04,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:14:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:08,400 INFO L93 Difference]: Finished difference Result 2973 states and 3732 transitions. [2022-12-13 17:14:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-12-13 17:14:08,400 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 4.113636363636363) internal successors, (181), 42 states have internal predecessors, (181), 15 states have call successors, (39), 8 states have call predecessors, (39), 10 states have return successors, (35), 13 states have call predecessors, (35), 15 states have call successors, (35) Word has length 131 [2022-12-13 17:14:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:08,408 INFO L225 Difference]: With dead ends: 2973 [2022-12-13 17:14:08,408 INFO L226 Difference]: Without dead ends: 1789 [2022-12-13 17:14:08,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 263 SyntacticMatches, 10 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4580 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=1633, Invalid=13618, Unknown=1, NotChecked=0, Total=15252 [2022-12-13 17:14:08,411 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 784 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 9297 mSolverCounterSat, 550 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 9867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 9297 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:08,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1362 Invalid, 9867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 9297 Invalid, 20 Unknown, 0 Unchecked, 48.9s Time] [2022-12-13 17:14:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2022-12-13 17:14:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1511. [2022-12-13 17:14:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1138 states have (on average 1.1564147627416521) internal successors, (1316), 1171 states have internal predecessors, (1316), 249 states have call successors, (249), 86 states have call predecessors, (249), 123 states have return successors, (334), 253 states have call predecessors, (334), 238 states have call successors, (334) [2022-12-13 17:14:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1899 transitions. [2022-12-13 17:14:08,516 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1899 transitions. Word has length 131 [2022-12-13 17:14:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:08,517 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 1899 transitions. [2022-12-13 17:14:08,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 4.113636363636363) internal successors, (181), 42 states have internal predecessors, (181), 15 states have call successors, (39), 8 states have call predecessors, (39), 10 states have return successors, (35), 13 states have call predecessors, (35), 15 states have call successors, (35) [2022-12-13 17:14:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1899 transitions. [2022-12-13 17:14:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 17:14:08,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:08,518 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:08,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 17:14:08,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:08,719 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:08,719 INFO L85 PathProgramCache]: Analyzing trace with hash -814740227, now seen corresponding path program 1 times [2022-12-13 17:14:08,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:08,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941906253] [2022-12-13 17:14:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:08,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:14:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:08,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:14:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:14:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:14:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:14:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:14:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:14:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:14:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:14:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 17:14:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:14:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:14:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 17:14:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:14:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:14:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-13 17:14:09,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:09,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941906253] [2022-12-13 17:14:09,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941906253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:09,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:09,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:14:09,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43589207] [2022-12-13 17:14:09,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:09,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:14:09,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:09,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:14:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:14:09,098 INFO L87 Difference]: Start difference. First operand 1511 states and 1899 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 17:14:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:09,713 INFO L93 Difference]: Finished difference Result 1810 states and 2247 transitions. [2022-12-13 17:14:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:14:09,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 133 [2022-12-13 17:14:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:09,722 INFO L225 Difference]: With dead ends: 1810 [2022-12-13 17:14:09,722 INFO L226 Difference]: Without dead ends: 1503 [2022-12-13 17:14:09,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:14:09,724 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 142 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:09,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 319 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:14:09,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2022-12-13 17:14:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1484. [2022-12-13 17:14:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1126 states have (on average 1.1536412078152753) internal successors, (1299), 1158 states have internal predecessors, (1299), 234 states have call successors, (234), 86 states have call predecessors, (234), 123 states have return successors, (319), 239 states have call predecessors, (319), 223 states have call successors, (319) [2022-12-13 17:14:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 1852 transitions. [2022-12-13 17:14:09,858 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 1852 transitions. Word has length 133 [2022-12-13 17:14:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:09,859 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 1852 transitions. [2022-12-13 17:14:09,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 17:14:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 1852 transitions. [2022-12-13 17:14:09,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 17:14:09,861 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:09,861 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 17:14:09,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:14:09,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:09,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1072696079, now seen corresponding path program 1 times [2022-12-13 17:14:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:09,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157556237] [2022-12-13 17:14:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:09,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:14:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:14:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:14:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:14:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:14:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:14:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:14:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:14:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:14:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 17:14:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 17:14:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 17:14:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 17:14:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-12-13 17:14:10,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:10,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157556237] [2022-12-13 17:14:10,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157556237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:10,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:10,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:14:10,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040023107] [2022-12-13 17:14:10,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:10,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:14:10,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:10,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:14:10,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:14:10,367 INFO L87 Difference]: Start difference. First operand 1484 states and 1852 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-12-13 17:14:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:10,830 INFO L93 Difference]: Finished difference Result 1925 states and 2377 transitions. [2022-12-13 17:14:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:14:10,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 132 [2022-12-13 17:14:10,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:10,834 INFO L225 Difference]: With dead ends: 1925 [2022-12-13 17:14:10,835 INFO L226 Difference]: Without dead ends: 1490 [2022-12-13 17:14:10,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:14:10,836 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 107 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:10,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 211 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:14:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2022-12-13 17:14:10,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1450. [2022-12-13 17:14:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1093 states have (on average 1.1445562671546203) internal successors, (1251), 1124 states have internal predecessors, (1251), 234 states have call successors, (234), 86 states have call predecessors, (234), 122 states have return successors, (318), 239 states have call predecessors, (318), 223 states have call successors, (318) [2022-12-13 17:14:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1803 transitions. [2022-12-13 17:14:10,968 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1803 transitions. Word has length 132 [2022-12-13 17:14:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:10,968 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 1803 transitions. [2022-12-13 17:14:10,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-12-13 17:14:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1803 transitions. [2022-12-13 17:14:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 17:14:10,969 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:10,969 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:10,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 17:14:10,969 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:10,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash 665294586, now seen corresponding path program 1 times [2022-12-13 17:14:10,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:10,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844290314] [2022-12-13 17:14:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:10,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:14:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:14:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:14:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:14:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:14:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:14:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:14:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:14:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:14:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 17:14:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:14:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:14:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 17:14:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:14:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:14:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-13 17:14:11,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:11,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844290314] [2022-12-13 17:14:11,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844290314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:11,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:11,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:14:11,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006406034] [2022-12-13 17:14:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:11,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:14:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:14:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:14:11,505 INFO L87 Difference]: Start difference. First operand 1450 states and 1803 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 17:14:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:12,278 INFO L93 Difference]: Finished difference Result 1526 states and 1908 transitions. [2022-12-13 17:14:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:14:12,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-12-13 17:14:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:12,282 INFO L225 Difference]: With dead ends: 1526 [2022-12-13 17:14:12,282 INFO L226 Difference]: Without dead ends: 1524 [2022-12-13 17:14:12,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:14:12,283 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 162 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:12,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 234 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:14:12,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-12-13 17:14:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1506. [2022-12-13 17:14:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1135 states have (on average 1.1392070484581498) internal successors, (1293), 1166 states have internal predecessors, (1293), 234 states have call successors, (234), 100 states have call predecessors, (234), 136 states have return successors, (318), 239 states have call predecessors, (318), 223 states have call successors, (318) [2022-12-13 17:14:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1845 transitions. [2022-12-13 17:14:12,396 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1845 transitions. Word has length 134 [2022-12-13 17:14:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:12,397 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 1845 transitions. [2022-12-13 17:14:12,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 17:14:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1845 transitions. [2022-12-13 17:14:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 17:14:12,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:12,398 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:14:12,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:14:12,398 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:12,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1527495526, now seen corresponding path program 1 times [2022-12-13 17:14:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:12,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360030198] [2022-12-13 17:14:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:12,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:14:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:14:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:14:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:14:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:14:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:14:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:14:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:14:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:14:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 17:14:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 17:14:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 17:14:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 17:14:13,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:13,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360030198] [2022-12-13 17:14:13,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360030198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:13,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:14:13,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 17:14:13,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422948648] [2022-12-13 17:14:13,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:13,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:14:13,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:13,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:14:13,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:14:13,131 INFO L87 Difference]: Start difference. First operand 1506 states and 1845 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 17:14:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:13,787 INFO L93 Difference]: Finished difference Result 1595 states and 1934 transitions. [2022-12-13 17:14:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:14:13,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 133 [2022-12-13 17:14:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:13,796 INFO L225 Difference]: With dead ends: 1595 [2022-12-13 17:14:13,796 INFO L226 Difference]: Without dead ends: 1593 [2022-12-13 17:14:13,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-12-13 17:14:13,797 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 116 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:13,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 563 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:14:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-12-13 17:14:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1518. [2022-12-13 17:14:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1144 states have (on average 1.1381118881118881) internal successors, (1302), 1175 states have internal predecessors, (1302), 234 states have call successors, (234), 103 states have call predecessors, (234), 139 states have return successors, (318), 239 states have call predecessors, (318), 223 states have call successors, (318) [2022-12-13 17:14:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 1854 transitions. [2022-12-13 17:14:13,968 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 1854 transitions. Word has length 133 [2022-12-13 17:14:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:14:13,968 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 1854 transitions. [2022-12-13 17:14:13,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 17:14:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 1854 transitions. [2022-12-13 17:14:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 17:14:13,970 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:14:13,970 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:14:13,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:14:13,971 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:14:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:13,971 INFO L85 PathProgramCache]: Analyzing trace with hash 108106458, now seen corresponding path program 1 times [2022-12-13 17:14:13,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:13,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805747403] [2022-12-13 17:14:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:13,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:14:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:14:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:14:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:14:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:14:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:14:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:14:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:14:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:14:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 17:14:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 17:14:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:15,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 17:14:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 17:14:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 34 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-12-13 17:14:15,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:15,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805747403] [2022-12-13 17:14:15,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805747403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:15,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533327572] [2022-12-13 17:14:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:15,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:15,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:15,112 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:15,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 17:14:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:15,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 73 conjunts are in the unsatisfiable core [2022-12-13 17:14:15,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:17,896 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_50 Int) (v_aws_byte_buf_write_~buf.base_BEFORE_CALL_52 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_52) (+ v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_50 8)) 0))) (exists ((v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_50 Int) (v_aws_byte_buf_write_~buf.base_BEFORE_CALL_52 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_52) (+ v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_50 8)) 0)))) is different from true [2022-12-13 17:14:19,987 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_53 Int) (v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_51 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_53) (+ v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_51 8)) 0))) (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_53 Int) (v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_51 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_53) (+ v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_51 8)) 0)))) is different from true [2022-12-13 17:14:34,089 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:14:42,300 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:14:50,433 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:14:58,580 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:15:06,725 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:15:14,906 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:15:14,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:15:14,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 63 [2022-12-13 17:15:14,941 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:15:14,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 45 [2022-12-13 17:15:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 109 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 6 not checked. [2022-12-13 17:15:15,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:16,447 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-13 17:15:16,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-12-13 17:15:16,456 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-12-13 17:15:16,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-12-13 17:15:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 67 proven. 19 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-13 17:15:16,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533327572] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:16,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:16,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27, 21] total 53 [2022-12-13 17:15:16,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279815644] [2022-12-13 17:15:16,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 17:15:16,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 17:15:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2398, Unknown=11, NotChecked=198, Total=2756 [2022-12-13 17:15:16,530 INFO L87 Difference]: Start difference. First operand 1518 states and 1854 transitions. Second operand has 53 states, 47 states have (on average 3.021276595744681) internal successors, (142), 43 states have internal predecessors, (142), 10 states have call successors, (28), 8 states have call predecessors, (28), 11 states have return successors, (25), 9 states have call predecessors, (25), 8 states have call successors, (25) [2022-12-13 17:15:19,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:23,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:27,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:31,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:35,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:37,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:39,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:43,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:46,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:48,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:52,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:54,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:15:58,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:00,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:06,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:08,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:10,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:12,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:20,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:22,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:26,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:28,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:30,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:32,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:42,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:44,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:48,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:50,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:53,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:55,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:16:57,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:09,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:11,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:15,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:17,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:23,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:25,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:27,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:29,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:31,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:40,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:42,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:46,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:50,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:54,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:17:58,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:18:00,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:18:03,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:18:05,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:18:09,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:18:11,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:18:13,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:18:17,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:18:21,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:19:24,482 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:19:34,555 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:19:42,623 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:19:48,875 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:19:54,995 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:20:01,115 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:20:07,245 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:20:13,806 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:20:26,038 WARN L233 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 88 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:20:38,275 WARN L233 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 90 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:20:50,515 WARN L233 SmtUtils]: Spent 12.14s on a formula simplification. DAG size of input: 92 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:21:02,748 WARN L233 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 96 DAG size of output: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:21:16,904 WARN L233 SmtUtils]: Spent 12.08s on a formula simplification. DAG size of input: 68 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:21:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:21:25,548 INFO L93 Difference]: Finished difference Result 2433 states and 2916 transitions. [2022-12-13 17:21:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 17:21:25,549 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 47 states have (on average 3.021276595744681) internal successors, (142), 43 states have internal predecessors, (142), 10 states have call successors, (28), 8 states have call predecessors, (28), 11 states have return successors, (25), 9 states have call predecessors, (25), 8 states have call successors, (25) Word has length 134 [2022-12-13 17:21:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:21:25,552 INFO L225 Difference]: With dead ends: 2433 [2022-12-13 17:21:25,552 INFO L226 Difference]: Without dead ends: 1791 [2022-12-13 17:21:25,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 261 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2443 ImplicationChecksByTransitivity, 315.1s TimeCoverageRelationStatistics Valid=1076, Invalid=11513, Unknown=75, NotChecked=446, Total=13110 [2022-12-13 17:21:25,554 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 355 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 6879 mSolverCounterSat, 104 mSolverCounterUnsat, 54 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 7644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 6879 IncrementalHoareTripleChecker+Invalid, 54 IncrementalHoareTripleChecker+Unknown, 607 IncrementalHoareTripleChecker+Unchecked, 113.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:21:25,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 2092 Invalid, 7644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 6879 Invalid, 54 Unknown, 607 Unchecked, 113.7s Time] [2022-12-13 17:21:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-12-13 17:21:25,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1551. [2022-12-13 17:21:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1176 states have (on average 1.1318027210884354) internal successors, (1331), 1207 states have internal predecessors, (1331), 230 states have call successors, (230), 108 states have call predecessors, (230), 144 states have return successors, (312), 235 states have call predecessors, (312), 219 states have call successors, (312) [2022-12-13 17:21:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 1873 transitions. [2022-12-13 17:21:25,668 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 1873 transitions. Word has length 134 [2022-12-13 17:21:25,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:21:25,668 INFO L495 AbstractCegarLoop]: Abstraction has 1551 states and 1873 transitions. [2022-12-13 17:21:25,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 47 states have (on average 3.021276595744681) internal successors, (142), 43 states have internal predecessors, (142), 10 states have call successors, (28), 8 states have call predecessors, (28), 11 states have return successors, (25), 9 states have call predecessors, (25), 8 states have call successors, (25) [2022-12-13 17:21:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 1873 transitions. [2022-12-13 17:21:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 17:21:25,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:21:25,669 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:21:25,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 17:21:25,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 17:21:25,871 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:21:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:21:25,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1511185504, now seen corresponding path program 1 times [2022-12-13 17:21:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:21:25,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113605990] [2022-12-13 17:21:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:21:25,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:21:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:21:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:21:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:21:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:21:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:21:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:21:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:21:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:21:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:21:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 17:21:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:21:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:21:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 17:21:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:21:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:21:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 17:21:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-13 17:21:26,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:21:26,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113605990] [2022-12-13 17:21:26,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113605990] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:21:26,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257689625] [2022-12-13 17:21:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:21:26,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:21:26,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:21:26,858 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:21:26,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 17:21:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:27,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 105 conjunts are in the unsatisfiable core [2022-12-13 17:21:27,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:21:27,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:21:27,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:21:27,957 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 17:21:27,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 17:21:28,022 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 17:21:28,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-12-13 17:21:28,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-12-13 17:21:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:21:28,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-12-13 17:21:28,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:21:28,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-12-13 17:21:28,340 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 17:21:28,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-12-13 17:21:28,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:21:28,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2022-12-13 17:21:28,443 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:21:28,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 44 [2022-12-13 17:21:28,458 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 17:21:28,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-12-13 17:21:30,531 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_25| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_25|) 8) 0))) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_25| Int)) (not (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_25|) 16) 18446744073709551616) 0)))) is different from true [2022-12-13 17:21:40,731 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:21:45,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:21:45,266 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 17:21:45,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 34 [2022-12-13 17:21:45,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:21:45,275 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-12-13 17:21:45,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2022-12-13 17:21:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 1 not checked. [2022-12-13 17:21:45,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:21:52,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257689625] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:21:52,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:21:52,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26] total 36 [2022-12-13 17:21:52,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268661924] [2022-12-13 17:21:52,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:21:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 17:21:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:21:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 17:21:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1730, Unknown=5, NotChecked=84, Total=1980 [2022-12-13 17:21:52,146 INFO L87 Difference]: Start difference. First operand 1551 states and 1873 transitions. Second operand has 36 states, 33 states have (on average 4.212121212121212) internal successors, (139), 30 states have internal predecessors, (139), 12 states have call successors, (32), 8 states have call predecessors, (32), 9 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) [2022-12-13 17:21:54,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:21:57,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:21:59,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:01,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:06,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:08,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:10,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:12,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:20,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:22,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:25,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:27,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:29,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:31,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:33,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:35,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:37,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:39,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:42,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:44,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:46,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:22:46,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:22:46,925 INFO L93 Difference]: Finished difference Result 2143 states and 2548 transitions. [2022-12-13 17:22:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-13 17:22:46,925 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 4.212121212121212) internal successors, (139), 30 states have internal predecessors, (139), 12 states have call successors, (32), 8 states have call predecessors, (32), 9 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) Word has length 140 [2022-12-13 17:22:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:22:46,928 INFO L225 Difference]: With dead ends: 2143 [2022-12-13 17:22:46,928 INFO L226 Difference]: Without dead ends: 1385 [2022-12-13 17:22:46,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 236 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2819 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=1072, Invalid=8629, Unknown=5, NotChecked=194, Total=9900 [2022-12-13 17:22:46,930 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1168 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 403 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 48.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:22:46,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 429 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 3681 Invalid, 33 Unknown, 340 Unchecked, 48.1s Time] [2022-12-13 17:22:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2022-12-13 17:22:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1076. [2022-12-13 17:22:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 812 states have (on average 1.124384236453202) internal successors, (913), 833 states have internal predecessors, (913), 162 states have call successors, (162), 80 states have call predecessors, (162), 101 states have return successors, (200), 162 states have call predecessors, (200), 155 states have call successors, (200) [2022-12-13 17:22:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1275 transitions. [2022-12-13 17:22:47,029 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1275 transitions. Word has length 140 [2022-12-13 17:22:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:22:47,029 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1275 transitions. [2022-12-13 17:22:47,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 4.212121212121212) internal successors, (139), 30 states have internal predecessors, (139), 12 states have call successors, (32), 8 states have call predecessors, (32), 9 states have return successors, (31), 9 states have call predecessors, (31), 12 states have call successors, (31) [2022-12-13 17:22:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1275 transitions. [2022-12-13 17:22:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 17:22:47,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:22:47,030 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:22:47,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-13 17:22:47,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 17:22:47,232 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:22:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:22:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1942137874, now seen corresponding path program 1 times [2022-12-13 17:22:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:22:47,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742767347] [2022-12-13 17:22:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:22:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:22:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:22:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:22:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:22:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:22:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:22:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:22:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:22:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:22:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 17:22:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:22:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 17:22:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 17:22:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:22:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:22:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 17:22:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-12-13 17:22:49,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:22:49,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742767347] [2022-12-13 17:22:49,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742767347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:22:49,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:22:49,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-13 17:22:49,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109229577] [2022-12-13 17:22:49,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:22:49,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 17:22:49,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:22:49,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 17:22:49,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:22:49,625 INFO L87 Difference]: Start difference. First operand 1076 states and 1275 transitions. Second operand has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-13 17:22:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:22:50,936 INFO L93 Difference]: Finished difference Result 1107 states and 1321 transitions. [2022-12-13 17:22:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:22:50,937 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 151 [2022-12-13 17:22:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:22:50,940 INFO L225 Difference]: With dead ends: 1107 [2022-12-13 17:22:50,940 INFO L226 Difference]: Without dead ends: 1105 [2022-12-13 17:22:50,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2022-12-13 17:22:50,941 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 232 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:22:50,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 272 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:22:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-12-13 17:22:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1084. [2022-12-13 17:22:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 818 states have (on average 1.1234718826405867) internal successors, (919), 839 states have internal predecessors, (919), 162 states have call successors, (162), 82 states have call predecessors, (162), 103 states have return successors, (200), 162 states have call predecessors, (200), 155 states have call successors, (200) [2022-12-13 17:22:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1281 transitions. [2022-12-13 17:22:51,041 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1281 transitions. Word has length 151 [2022-12-13 17:22:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:22:51,042 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1281 transitions. [2022-12-13 17:22:51,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-13 17:22:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1281 transitions. [2022-12-13 17:22:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 17:22:51,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:22:51,043 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:51,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 17:22:51,043 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:22:51,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:22:51,043 INFO L85 PathProgramCache]: Analyzing trace with hash -464359932, now seen corresponding path program 1 times [2022-12-13 17:22:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:22:51,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192136542] [2022-12-13 17:22:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:22:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:22:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:22:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:22:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:22:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:22:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:22:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:22:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:22:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:22:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:22:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 17:22:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 17:22:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 17:22:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:22:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:22:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:22:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 17:22:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 17:22:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-12-13 17:22:51,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:22:51,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192136542] [2022-12-13 17:22:51,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192136542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:22:51,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:22:51,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 17:22:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411117231] [2022-12-13 17:22:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:22:51,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:22:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:22:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:22:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:22:51,561 INFO L87 Difference]: Start difference. First operand 1084 states and 1281 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-12-13 17:22:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:22:52,334 INFO L93 Difference]: Finished difference Result 1127 states and 1327 transitions. [2022-12-13 17:22:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:22:52,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2022-12-13 17:22:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:22:52,338 INFO L225 Difference]: With dead ends: 1127 [2022-12-13 17:22:52,338 INFO L226 Difference]: Without dead ends: 1125 [2022-12-13 17:22:52,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:22:52,339 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 154 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:22:52,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 437 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:22:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-12-13 17:22:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1102. [2022-12-13 17:22:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 830 states have (on average 1.121686746987952) internal successors, (931), 853 states have internal predecessors, (931), 164 states have call successors, (164), 84 states have call predecessors, (164), 107 states have return successors, (206), 164 states have call predecessors, (206), 157 states have call successors, (206) [2022-12-13 17:22:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1301 transitions. [2022-12-13 17:22:52,439 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1301 transitions. Word has length 155 [2022-12-13 17:22:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:22:52,439 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1301 transitions. [2022-12-13 17:22:52,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-12-13 17:22:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1301 transitions. [2022-12-13 17:22:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 17:22:52,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:22:52,441 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:22:52,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 17:22:52,441 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:22:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:22:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash 230739894, now seen corresponding path program 1 times [2022-12-13 17:22:52,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:22:52,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599879258] [2022-12-13 17:22:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:22:52,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:22:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:22:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:22:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:22:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:22:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:22:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:22:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:22:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:22:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 17:22:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:22:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 17:22:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 17:22:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:22:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:22:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 17:22:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 17:22:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-12-13 17:22:56,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:22:56,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599879258] [2022-12-13 17:22:56,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599879258] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:22:56,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716114636] [2022-12-13 17:22:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:22:56,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:22:56,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:22:56,592 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:22:56,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 17:22:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:22:57,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 117 conjunts are in the unsatisfiable core [2022-12-13 17:22:57,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:22:57,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:22:57,759 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:22:57,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 17:22:57,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:22:57,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:22:57,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:22:57,817 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 17:22:57,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2022-12-13 17:22:57,827 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:22:57,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 17:23:00,019 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_1|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_1|) 16)))) is different from true [2022-12-13 17:23:02,145 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2|) 16)) (not (= |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2|)))) is different from true [2022-12-13 17:23:02,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-12-13 17:23:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 125 trivial. 8 not checked. [2022-12-13 17:23:02,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:23:03,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716114636] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:23:03,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:23:03,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26] total 40 [2022-12-13 17:23:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185270690] [2022-12-13 17:23:03,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:23:03,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 17:23:03,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:23:03,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 17:23:03,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1682, Unknown=2, NotChecked=166, Total=1980 [2022-12-13 17:23:03,027 INFO L87 Difference]: Start difference. First operand 1102 states and 1301 transitions. Second operand has 40 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 36 states have internal predecessors, (99), 17 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) [2022-12-13 17:23:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:23:26,307 INFO L93 Difference]: Finished difference Result 1189 states and 1417 transitions. [2022-12-13 17:23:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 17:23:26,307 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 36 states have internal predecessors, (99), 17 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) Word has length 157 [2022-12-13 17:23:26,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:23:26,310 INFO L225 Difference]: With dead ends: 1189 [2022-12-13 17:23:26,310 INFO L226 Difference]: Without dead ends: 1187 [2022-12-13 17:23:26,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 187 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=420, Invalid=4264, Unknown=16, NotChecked=270, Total=4970 [2022-12-13 17:23:26,311 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 365 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 4352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 418 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:23:26,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 624 Invalid, 4352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 3644 Invalid, 0 Unknown, 418 Unchecked, 1.8s Time] [2022-12-13 17:23:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-12-13 17:23:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1110. [2022-12-13 17:23:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 836 states have (on average 1.1208133971291867) internal successors, (937), 859 states have internal predecessors, (937), 164 states have call successors, (164), 86 states have call predecessors, (164), 109 states have return successors, (206), 164 states have call predecessors, (206), 157 states have call successors, (206) [2022-12-13 17:23:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1307 transitions. [2022-12-13 17:23:26,417 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1307 transitions. Word has length 157 [2022-12-13 17:23:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:23:26,417 INFO L495 AbstractCegarLoop]: Abstraction has 1110 states and 1307 transitions. [2022-12-13 17:23:26,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 36 states have internal predecessors, (99), 17 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) [2022-12-13 17:23:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1307 transitions. [2022-12-13 17:23:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 17:23:26,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:23:26,418 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:23:26,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-13 17:23:26,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 17:23:26,619 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:23:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:23:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1172219850, now seen corresponding path program 1 times [2022-12-13 17:23:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:23:26,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178352739] [2022-12-13 17:23:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:23:26,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:23:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:23:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:23:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:23:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:23:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:23:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:23:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:23:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:23:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:23:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 17:23:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 17:23:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 17:23:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:23:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:23:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:23:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 17:23:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 17:23:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-12-13 17:23:27,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:23:27,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178352739] [2022-12-13 17:23:27,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178352739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:23:27,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:23:27,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 17:23:27,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649831075] [2022-12-13 17:23:27,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:23:27,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:23:27,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:23:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:23:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:23:27,221 INFO L87 Difference]: Start difference. First operand 1110 states and 1307 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-12-13 17:23:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:23:27,980 INFO L93 Difference]: Finished difference Result 1355 states and 1610 transitions. [2022-12-13 17:23:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:23:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 159 [2022-12-13 17:23:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:23:27,983 INFO L225 Difference]: With dead ends: 1355 [2022-12-13 17:23:27,983 INFO L226 Difference]: Without dead ends: 888 [2022-12-13 17:23:27,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:23:27,984 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 161 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:23:27,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 496 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:23:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-12-13 17:23:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 881. [2022-12-13 17:23:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 669 states have (on average 1.1076233183856503) internal successors, (741), 686 states have internal predecessors, (741), 129 states have call successors, (129), 74 states have call predecessors, (129), 82 states have return successors, (151), 120 states have call predecessors, (151), 123 states have call successors, (151) [2022-12-13 17:23:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1021 transitions. [2022-12-13 17:23:28,076 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1021 transitions. Word has length 159 [2022-12-13 17:23:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:23:28,076 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1021 transitions. [2022-12-13 17:23:28,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-12-13 17:23:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1021 transitions. [2022-12-13 17:23:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 17:23:28,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:23:28,077 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:23:28,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 17:23:28,077 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:23:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:23:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash -940745167, now seen corresponding path program 1 times [2022-12-13 17:23:28,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:23:28,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780552990] [2022-12-13 17:23:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:23:28,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:23:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:23:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:23:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:23:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:23:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:23:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:23:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 17:23:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:23:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 17:23:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 17:23:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:23:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 17:23:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:30,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 17:23:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:23:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:30,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:23:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:30,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 17:23:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-12-13 17:23:30,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:23:30,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780552990] [2022-12-13 17:23:30,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780552990] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:23:30,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659683541] [2022-12-13 17:23:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:23:30,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:23:30,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:23:30,222 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:23:30,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372a7588-cd96-4649-802a-7284c44a7772/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 17:23:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:30,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 131 conjunts are in the unsatisfiable core [2022-12-13 17:23:30,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:23:30,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-13 17:23:30,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 17:23:30,819 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-12-13 17:23:30,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:23:30,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 17:23:30,889 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 6 treesize of output 5 [2022-12-13 17:23:31,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:23:31,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:23:31,647 INFO L321 Elim1Store]: treesize reduction 62, result has 24.4 percent of original size [2022-12-13 17:23:31,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 38 [2022-12-13 17:23:31,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-12-13 17:23:32,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-12-13 17:23:32,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:23:32,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-12-13 17:23:32,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:23:32,183 INFO L321 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2022-12-13 17:23:32,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 17:23:37,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-13 17:23:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 31 proven. 157 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:23:37,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:23:38,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659683541] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:23:38,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:23:38,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 36] total 48 [2022-12-13 17:23:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257423608] [2022-12-13 17:23:38,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:23:38,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 17:23:38,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:23:38,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 17:23:38,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=3310, Unknown=2, NotChecked=116, Total=3660 [2022-12-13 17:23:38,876 INFO L87 Difference]: Start difference. First operand 881 states and 1021 transitions. Second operand has 48 states, 46 states have (on average 3.652173913043478) internal successors, (168), 40 states have internal predecessors, (168), 17 states have call successors, (31), 12 states have call predecessors, (31), 14 states have return successors, (31), 16 states have call predecessors, (31), 17 states have call successors, (31) [2022-12-13 17:23:40,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:23:43,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:23:45,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:23:47,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:23:50,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:23:52,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:23:57,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:23:58,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:00,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:02,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:06,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:09,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:11,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:16,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:19,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:25,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:28,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:30,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:33,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:24:36,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]