./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/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_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/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_481c459a-c687-404e-b772-619bf2d5eea2/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 759f46f7babb0ca7f053e49ca5e6c32faf03308f49b34096404b1c5912342570 --- 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 13:56:32,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:56:32,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:56:32,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:56:32,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:56:32,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:56:32,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:56:32,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:56:32,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:56:32,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:56:32,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:56:32,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:56:32,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:56:32,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:56:32,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:56:32,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:56:32,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:56:32,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:56:32,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:56:32,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:56:32,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:56:32,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:56:32,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:56:32,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:56:32,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:56:32,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:56:32,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:56:32,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:56:32,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:56:32,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:56:32,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:56:32,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:56:32,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:56:32,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:56:32,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:56:32,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:56:32,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:56:32,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:56:32,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:56:32,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:56:32,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:56:32,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 13:56:32,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:56:32,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:56:32,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:56:32,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:56:32,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:56:32,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:56:32,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:56:32,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:56:32,214 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:56:32,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:56:32,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:56:32,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:56:32,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:56:32,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:56:32,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:56:32,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:56:32,215 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:56:32,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:56:32,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:56:32,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:56:32,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:56:32,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:56:32,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:56:32,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:56:32,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:56:32,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:56:32,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:56:32,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:56:32,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:56:32,218 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:56:32,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:56:32,218 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:56:32,218 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_481c459a-c687-404e-b772-619bf2d5eea2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 759f46f7babb0ca7f053e49ca5e6c32faf03308f49b34096404b1c5912342570 [2022-12-13 13:56:32,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:56:32,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:56:32,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:56:32,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:56:32,437 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:56:32,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i [2022-12-13 13:56:34,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:56:35,354 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:56:35,354 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i [2022-12-13 13:56:35,385 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/data/fba38c5f6/4096a1f4c7dc4e578afbb9938b8d80ab/FLAGb72b0a0de [2022-12-13 13:56:35,398 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/data/fba38c5f6/4096a1f4c7dc4e578afbb9938b8d80ab [2022-12-13 13:56:35,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:56:35,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:56:35,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:56:35,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:56:35,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:56:35,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:56:35" (1/1) ... [2022-12-13 13:56:35,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3692ada2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:35, skipping insertion in model container [2022-12-13 13:56:35,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:56:35" (1/1) ... [2022-12-13 13:56:35,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:56:35,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:56:35,693 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_481c459a-c687-404e-b772-619bf2d5eea2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i[4499,4512] [2022-12-13 13:56:35,699 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_481c459a-c687-404e-b772-619bf2d5eea2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i[4559,4572] [2022-12-13 13:56:36,414 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,415 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,416 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,417 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,418 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,431 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,432 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,434 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,435 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,510 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:56:36,510 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:56:36,511 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:56:36,514 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 13:56:36,516 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 13:56:36,516 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 13:56:36,780 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 13:56:36,780 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 13:56:36,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 13:56:36,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 13:56:36,783 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 13:56:36,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 13:56:36,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 13:56:36,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 13:56:36,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 13:56:36,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 13:56:36,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 13:56:36,917 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 13:56:36,943 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 13:56:36,951 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 13:56:36,972 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 13:56:36,978 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:36,979 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,025 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 13:56:37,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:56:37,062 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:56:37,072 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_481c459a-c687-404e-b772-619bf2d5eea2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i[4499,4512] [2022-12-13 13:56:37,073 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_481c459a-c687-404e-b772-619bf2d5eea2/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i[4559,4572] [2022-12-13 13:56:37,098 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,098 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,099 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,099 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,100 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,104 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,105 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,105 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,106 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,111 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:56:37,111 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:56:37,112 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:56:37,114 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 13:56:37,115 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 13:56:37,115 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 13:56:37,132 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 13:56:37,132 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 13:56:37,133 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 13:56:37,133 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 13:56:37,134 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 13:56:37,135 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 13:56:37,135 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 13:56:37,135 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 13:56:37,136 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 13:56:37,136 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 13:56:37,136 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 13:56:37,151 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 13:56:37,167 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 13:56:37,172 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 13:56:37,185 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 13:56:37,190 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,190 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:56:37,211 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 13:56:37,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:56:37,456 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:56:37,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37 WrapperNode [2022-12-13 13:56:37,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:56:37,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:56:37,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:56:37,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:56:37,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,613 INFO L138 Inliner]: procedures = 691, calls = 2644, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 983 [2022-12-13 13:56:37,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:56:37,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:56:37,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:56:37,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:56:37,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,674 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:56:37,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:56:37,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:56:37,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:56:37,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (1/1) ... [2022-12-13 13:56:37,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:56:37,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:37,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:56:37,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:56:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-12-13 13:56:37,753 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-12-13 13:56:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2022-12-13 13:56:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2022-12-13 13:56:37,753 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2022-12-13 13:56:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-12-13 13:56:37,753 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-12-13 13:56:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:56:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 13:56:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 13:56:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-12-13 13:56:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-13 13:56:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 13:56:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh64 [2022-12-13 13:56:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh64 [2022-12-13 13:56:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:56:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-13 13:56:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-13 13:56:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 13:56:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 13:56:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:56:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:56:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:56:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:56:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:56:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 13:56:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 13:56:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-13 13:56:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-13 13:56:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-13 13:56:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-13 13:56:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-12-13 13:56:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-12-13 13:56:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 13:56:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 13:56:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:56:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:56:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 13:56:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-13 13:56:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-13 13:56:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:56:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2022-12-13 13:56:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2022-12-13 13:56:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-12-13 13:56:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:56:37,982 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:56:37,985 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:56:39,024 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:56:39,031 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:56:39,031 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:56:39,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:56:39 BoogieIcfgContainer [2022-12-13 13:56:39,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:56:39,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:56:39,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:56:39,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:56:39,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:56:35" (1/3) ... [2022-12-13 13:56:39,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d2cddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:56:39, skipping insertion in model container [2022-12-13 13:56:39,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:37" (2/3) ... [2022-12-13 13:56:39,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d2cddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:56:39, skipping insertion in model container [2022-12-13 13:56:39,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:56:39" (3/3) ... [2022-12-13 13:56:39,042 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be64_harness_negated.i [2022-12-13 13:56:39,060 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:56:39,060 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:56:39,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:56:39,116 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;@5b294698, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:56:39,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:56:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-13 13:56:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 13:56:39,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:39,140 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:39,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash -75719666, now seen corresponding path program 1 times [2022-12-13 13:56:39,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:39,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641108659] [2022-12-13 13:56:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:39,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 13:56:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 13:56:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 13:56:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 13:56:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:56:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 13:56:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 13:56:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 13:56:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 13:56:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:56:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:56:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:56:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 13:56:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 13:56:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:56:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-12-13 13:56:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641108659] [2022-12-13 13:56:39,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641108659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:39,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:39,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:56:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892953562] [2022-12-13 13:56:39,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:39,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:56:39,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:39,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:56:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:56:39,814 INFO L87 Difference]: Start difference. First operand has 172 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 13:56:40,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:40,385 INFO L93 Difference]: Finished difference Result 344 states and 494 transitions. [2022-12-13 13:56:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:56:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2022-12-13 13:56:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:40,396 INFO L225 Difference]: With dead ends: 344 [2022-12-13 13:56:40,396 INFO L226 Difference]: Without dead ends: 173 [2022-12-13 13:56:40,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:56:40,404 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 126 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:40,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 238 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 13:56:40,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-13 13:56:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 166. [2022-12-13 13:56:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 103 states have internal predecessors, (125), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-13 13:56:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 224 transitions. [2022-12-13 13:56:40,451 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 224 transitions. Word has length 135 [2022-12-13 13:56:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:40,452 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 224 transitions. [2022-12-13 13:56:40,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 13:56:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 224 transitions. [2022-12-13 13:56:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 13:56:40,456 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:40,456 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:40,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:56:40,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 314980752, now seen corresponding path program 1 times [2022-12-13 13:56:40,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:40,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765895317] [2022-12-13 13:56:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 13:56:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 13:56:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 13:56:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 13:56:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:56:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 13:56:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 13:56:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 13:56:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 13:56:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:56:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:56:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:56:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 13:56:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 13:56:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:56:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-12-13 13:56:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:41,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765895317] [2022-12-13 13:56:41,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765895317] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:41,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318436346] [2022-12-13 13:56:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:41,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:41,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:41,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:56:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:41,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:56:41,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-12-13 13:56:41,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:41,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318436346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:41,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:41,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-12-13 13:56:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592032192] [2022-12-13 13:56:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:41,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:56:41,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:56:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:56:41,627 INFO L87 Difference]: Start difference. First operand 166 states and 224 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 13:56:41,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:41,854 INFO L93 Difference]: Finished difference Result 308 states and 427 transitions. [2022-12-13 13:56:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:56:41,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 135 [2022-12-13 13:56:41,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:41,856 INFO L225 Difference]: With dead ends: 308 [2022-12-13 13:56:41,856 INFO L226 Difference]: Without dead ends: 169 [2022-12-13 13:56:41,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:56:41,859 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 244 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:41,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 625 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:56:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-12-13 13:56:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-12-13 13:56:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 106 states have internal predecessors, (127), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2022-12-13 13:56:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 234 transitions. [2022-12-13 13:56:41,882 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 234 transitions. Word has length 135 [2022-12-13 13:56:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:41,883 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 234 transitions. [2022-12-13 13:56:41,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 13:56:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 234 transitions. [2022-12-13 13:56:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 13:56:41,886 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:41,886 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:41,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:56:42,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:42,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1225161781, now seen corresponding path program 1 times [2022-12-13 13:56:42,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:42,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094264943] [2022-12-13 13:56:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:42,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 13:56:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:56:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:56:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:56:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 13:56:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 13:56:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:56:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 13:56:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 13:56:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 13:56:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 13:56:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:56:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:56:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 13:56:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 13:56:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-12-13 13:56:42,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:42,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094264943] [2022-12-13 13:56:42,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094264943] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:42,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224000102] [2022-12-13 13:56:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:42,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:42,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:42,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:42,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:56:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:43,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:56:43,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 13:56:43,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:43,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224000102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:43,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:43,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-13 13:56:43,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350743438] [2022-12-13 13:56:43,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:43,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:56:43,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:56:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:56:43,249 INFO L87 Difference]: Start difference. First operand 169 states and 234 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-13 13:56:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:43,482 INFO L93 Difference]: Finished difference Result 294 states and 408 transitions. [2022-12-13 13:56:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:56:43,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 137 [2022-12-13 13:56:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:43,485 INFO L225 Difference]: With dead ends: 294 [2022-12-13 13:56:43,485 INFO L226 Difference]: Without dead ends: 169 [2022-12-13 13:56:43,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:56:43,487 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 262 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:43,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 769 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:56:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-12-13 13:56:43,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-12-13 13:56:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 106 states have internal predecessors, (127), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-12-13 13:56:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 232 transitions. [2022-12-13 13:56:43,506 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 232 transitions. Word has length 137 [2022-12-13 13:56:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:43,507 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 232 transitions. [2022-12-13 13:56:43,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-13 13:56:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 232 transitions. [2022-12-13 13:56:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 13:56:43,510 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:43,510 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:43,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:56:43,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:43,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:43,714 INFO L85 PathProgramCache]: Analyzing trace with hash -347663610, now seen corresponding path program 2 times [2022-12-13 13:56:43,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:43,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943117543] [2022-12-13 13:56:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:43,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 13:56:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:56:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:56:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:56:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 13:56:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 13:56:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:56:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 13:56:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 13:56:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 13:56:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 13:56:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 13:56:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 13:56:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 13:56:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 13:56:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-12-13 13:56:44,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:44,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943117543] [2022-12-13 13:56:44,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943117543] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:44,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376892558] [2022-12-13 13:56:44,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:56:44,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:44,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:44,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:44,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:56:44,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:56:44,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:56:44,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 13:56:44,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-12-13 13:56:44,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:44,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376892558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:44,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:44,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-12-13 13:56:44,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364261306] [2022-12-13 13:56:44,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:44,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:56:44,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:44,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:56:44,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:56:44,837 INFO L87 Difference]: Start difference. First operand 169 states and 232 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 13:56:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:44,899 INFO L93 Difference]: Finished difference Result 177 states and 240 transitions. [2022-12-13 13:56:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:56:44,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 139 [2022-12-13 13:56:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:44,901 INFO L225 Difference]: With dead ends: 177 [2022-12-13 13:56:44,901 INFO L226 Difference]: Without dead ends: 175 [2022-12-13 13:56:44,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:56:44,903 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 5 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:44,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1296 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-12-13 13:56:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2022-12-13 13:56:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 109 states have internal predecessors, (130), 51 states have call successors, (51), 14 states have call predecessors, (51), 15 states have return successors, (56), 50 states have call predecessors, (56), 50 states have call successors, (56) [2022-12-13 13:56:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 237 transitions. [2022-12-13 13:56:44,921 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 237 transitions. Word has length 139 [2022-12-13 13:56:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:44,922 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 237 transitions. [2022-12-13 13:56:44,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 13:56:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 237 transitions. [2022-12-13 13:56:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 13:56:44,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:44,924 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:44,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:56:45,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:45,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:45,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1296634667, now seen corresponding path program 3 times [2022-12-13 13:56:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:45,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072468737] [2022-12-13 13:56:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 13:56:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:56:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:56:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:56:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 13:56:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 13:56:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:56:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 13:56:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 13:56:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 13:56:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 13:56:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 13:56:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 13:56:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 13:56:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 13:56:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-12-13 13:56:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:45,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072468737] [2022-12-13 13:56:45,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072468737] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:45,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118931216] [2022-12-13 13:56:45,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:56:45,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:45,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:45,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:45,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:56:46,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 13:56:46,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:56:46,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 13:56:46,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-12-13 13:56:46,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:46,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118931216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:46,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:46,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-12-13 13:56:46,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128969255] [2022-12-13 13:56:46,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:46,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:56:46,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:56:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:56:46,503 INFO L87 Difference]: Start difference. First operand 174 states and 237 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 13:56:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:46,593 INFO L93 Difference]: Finished difference Result 293 states and 396 transitions. [2022-12-13 13:56:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:56:46,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 141 [2022-12-13 13:56:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:46,595 INFO L225 Difference]: With dead ends: 293 [2022-12-13 13:56:46,595 INFO L226 Difference]: Without dead ends: 174 [2022-12-13 13:56:46,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:56:46,596 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 2 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:46,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1217 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:56:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-12-13 13:56:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-12-13 13:56:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 109 states have internal predecessors, (130), 51 states have call successors, (51), 14 states have call predecessors, (51), 15 states have return successors, (55), 50 states have call predecessors, (55), 50 states have call successors, (55) [2022-12-13 13:56:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 236 transitions. [2022-12-13 13:56:46,605 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 236 transitions. Word has length 141 [2022-12-13 13:56:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:46,606 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 236 transitions. [2022-12-13 13:56:46,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 13:56:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 236 transitions. [2022-12-13 13:56:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 13:56:46,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:46,607 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:46,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:56:46,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:46,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash -274524016, now seen corresponding path program 4 times [2022-12-13 13:56:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:46,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161619208] [2022-12-13 13:56:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:46,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 13:56:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:56:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:56:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:56:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 13:56:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 13:56:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:56:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 13:56:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 13:56:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 13:56:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 13:56:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 13:56:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 13:56:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 13:56:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:56:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:56:47,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:47,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161619208] [2022-12-13 13:56:47,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161619208] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:47,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821681032] [2022-12-13 13:56:47,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:56:47,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:47,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:47,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:47,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:56:47,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:56:47,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:56:47,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 13:56:47,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 13:56:47,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:47,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821681032] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:47,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:47,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-12-13 13:56:47,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617904819] [2022-12-13 13:56:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:47,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:56:47,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:56:47,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:56:47,960 INFO L87 Difference]: Start difference. First operand 174 states and 236 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-13 13:56:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:48,241 INFO L93 Difference]: Finished difference Result 298 states and 403 transitions. [2022-12-13 13:56:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:56:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 143 [2022-12-13 13:56:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:48,244 INFO L225 Difference]: With dead ends: 298 [2022-12-13 13:56:48,244 INFO L226 Difference]: Without dead ends: 174 [2022-12-13 13:56:48,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-12-13 13:56:48,245 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 292 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:48,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 841 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:56:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-12-13 13:56:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-12-13 13:56:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 109 states have internal predecessors, (130), 51 states have call successors, (51), 14 states have call predecessors, (51), 15 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2022-12-13 13:56:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 233 transitions. [2022-12-13 13:56:48,259 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 233 transitions. Word has length 143 [2022-12-13 13:56:48,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:48,260 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 233 transitions. [2022-12-13 13:56:48,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-13 13:56:48,260 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 233 transitions. [2022-12-13 13:56:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 13:56:48,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:48,262 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:48,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 13:56:48,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 13:56:48,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1188904373, now seen corresponding path program 1 times [2022-12-13 13:56:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:48,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584028828] [2022-12-13 13:56:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:48,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 13:56:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:56:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:56:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:56:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 13:56:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 13:56:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:56:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 13:56:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 13:56:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 13:56:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:56:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 13:56:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 13:56:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:56:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 13:56:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 13:56:49,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:49,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584028828] [2022-12-13 13:56:49,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584028828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:49,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:49,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:56:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914989332] [2022-12-13 13:56:49,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:49,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:56:49,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:56:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:56:49,010 INFO L87 Difference]: Start difference. First operand 174 states and 233 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 13:56:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:49,750 INFO L93 Difference]: Finished difference Result 318 states and 428 transitions. [2022-12-13 13:56:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:56:49,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 145 [2022-12-13 13:56:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:49,752 INFO L225 Difference]: With dead ends: 318 [2022-12-13 13:56:49,752 INFO L226 Difference]: Without dead ends: 184 [2022-12-13 13:56:49,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:56:49,753 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 135 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:49,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 430 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 13:56:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-13 13:56:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2022-12-13 13:56:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 113 states have internal predecessors, (135), 51 states have call successors, (51), 14 states have call predecessors, (51), 16 states have return successors, (53), 50 states have call predecessors, (53), 50 states have call successors, (53) [2022-12-13 13:56:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 239 transitions. [2022-12-13 13:56:49,764 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 239 transitions. Word has length 145 [2022-12-13 13:56:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:49,764 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 239 transitions. [2022-12-13 13:56:49,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 13:56:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 239 transitions. [2022-12-13 13:56:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 13:56:49,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:49,765 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:49,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:56:49,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash 378113234, now seen corresponding path program 1 times [2022-12-13 13:56:49,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:49,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888496999] [2022-12-13 13:56:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:49,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 13:56:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:56:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:56:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:56:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 13:56:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 13:56:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 13:56:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 13:56:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 13:56:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 13:56:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 13:56:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 13:56:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 13:56:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 13:56:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 13:56:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 13:56:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888496999] [2022-12-13 13:56:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888496999] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752173417] [2022-12-13 13:56:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:50,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:50,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:50,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:50,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:56:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:50,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:56:50,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 108 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-13 13:56:50,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 13:56:51,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752173417] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:51,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:56:51,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 10 [2022-12-13 13:56:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894033836] [2022-12-13 13:56:51,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:51,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:56:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:56:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:56:51,051 INFO L87 Difference]: Start difference. First operand 178 states and 239 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 13:56:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:51,191 INFO L93 Difference]: Finished difference Result 323 states and 439 transitions. [2022-12-13 13:56:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:56:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 146 [2022-12-13 13:56:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:51,192 INFO L225 Difference]: With dead ends: 323 [2022-12-13 13:56:51,192 INFO L226 Difference]: Without dead ends: 184 [2022-12-13 13:56:51,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 326 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:56:51,193 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 5 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:51,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 438 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:56:51,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-13 13:56:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2022-12-13 13:56:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 113 states have (on average 1.2212389380530972) internal successors, (138), 115 states have internal predecessors, (138), 51 states have call successors, (51), 15 states have call predecessors, (51), 16 states have return successors, (53), 50 states have call predecessors, (53), 50 states have call successors, (53) [2022-12-13 13:56:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 242 transitions. [2022-12-13 13:56:51,202 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 242 transitions. Word has length 146 [2022-12-13 13:56:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:51,202 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 242 transitions. [2022-12-13 13:56:51,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 13:56:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 242 transitions. [2022-12-13 13:56:51,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 13:56:51,204 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:51,204 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:51,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:56:51,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:51,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:51,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:51,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1468031149, now seen corresponding path program 1 times [2022-12-13 13:56:51,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:51,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878822305] [2022-12-13 13:56:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:51,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 13:56:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:56:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:56:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:56:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:51,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 13:56:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 13:56:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 13:56:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 13:56:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 13:56:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:56:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:56:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:56:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 13:56:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 13:56:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 13:56:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-12-13 13:56:52,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:52,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878822305] [2022-12-13 13:56:52,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878822305] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:52,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934164155] [2022-12-13 13:56:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:52,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:52,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:52,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:52,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:56:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:52,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-13 13:56:52,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 13:56:53,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:53,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934164155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:53,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:53,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2022-12-13 13:56:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501053685] [2022-12-13 13:56:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:53,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 13:56:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 13:56:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-12-13 13:56:53,011 INFO L87 Difference]: Start difference. First operand 181 states and 242 transitions. Second operand has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-13 13:56:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:53,991 INFO L93 Difference]: Finished difference Result 352 states and 475 transitions. [2022-12-13 13:56:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:56:53,991 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 147 [2022-12-13 13:56:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:53,993 INFO L225 Difference]: With dead ends: 352 [2022-12-13 13:56:53,993 INFO L226 Difference]: Without dead ends: 194 [2022-12-13 13:56:53,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2022-12-13 13:56:53,994 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 96 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:53,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1205 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 13:56:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-12-13 13:56:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2022-12-13 13:56:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 121 states have (on average 1.2066115702479339) internal successors, (146), 123 states have internal predecessors, (146), 52 states have call successors, (52), 17 states have call predecessors, (52), 18 states have return successors, (62), 51 states have call predecessors, (62), 50 states have call successors, (62) [2022-12-13 13:56:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 260 transitions. [2022-12-13 13:56:54,008 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 260 transitions. Word has length 147 [2022-12-13 13:56:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:54,008 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 260 transitions. [2022-12-13 13:56:54,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-13 13:56:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 260 transitions. [2022-12-13 13:56:54,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 13:56:54,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:54,009 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:54,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:56:54,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:54,211 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:54,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1349693045, now seen corresponding path program 1 times [2022-12-13 13:56:54,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:54,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179948603] [2022-12-13 13:56:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 13:56:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 13:56:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 13:56:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 13:56:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:56:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 13:56:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 13:56:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 13:56:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 13:56:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 13:56:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 13:56:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 13:56:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 13:56:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:56:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 13:56:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-12-13 13:56:54,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:54,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179948603] [2022-12-13 13:56:54,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179948603] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:54,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583204186] [2022-12-13 13:56:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:54,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:54,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:54,908 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:54,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:56:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:55,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 13:56:55,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-12-13 13:56:55,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:55,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583204186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:55,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:55,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-12-13 13:56:55,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984887107] [2022-12-13 13:56:55,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:55,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:56:55,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:56:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:56:55,417 INFO L87 Difference]: Start difference. First operand 192 states and 260 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 13:56:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:55,549 INFO L93 Difference]: Finished difference Result 358 states and 498 transitions. [2022-12-13 13:56:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:56:55,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 151 [2022-12-13 13:56:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:55,550 INFO L225 Difference]: With dead ends: 358 [2022-12-13 13:56:55,550 INFO L226 Difference]: Without dead ends: 197 [2022-12-13 13:56:55,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:56:55,551 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 13 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:55,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1663 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:56:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-12-13 13:56:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-12-13 13:56:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 125 states have (on average 1.2) internal successors, (150), 128 states have internal predecessors, (150), 52 states have call successors, (52), 17 states have call predecessors, (52), 19 states have return successors, (71), 51 states have call predecessors, (71), 50 states have call successors, (71) [2022-12-13 13:56:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 273 transitions. [2022-12-13 13:56:55,563 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 273 transitions. Word has length 151 [2022-12-13 13:56:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:55,563 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 273 transitions. [2022-12-13 13:56:55,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 13:56:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 273 transitions. [2022-12-13 13:56:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 13:56:55,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:55,564 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:55,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:56:55,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:56:55,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:55,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1143960860, now seen corresponding path program 1 times [2022-12-13 13:56:55,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:55,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047010754] [2022-12-13 13:56:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:55,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:56:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:56:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:56:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:56:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:56:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 13:56:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:56:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 13:56:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 13:56:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:56:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 13:56:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 13:56:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 13:56:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:56:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:56:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 13:56:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:56:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 13:56:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 13:56:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-13 13:56:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:56,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047010754] [2022-12-13 13:56:56,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047010754] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:56,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571121311] [2022-12-13 13:56:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:56,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:56,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:56,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:56,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:56:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:57,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 13:56:57,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:58,786 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 25 treesize of output 17 [2022-12-13 13:56:58,791 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 21 treesize of output 13 [2022-12-13 13:56:58,793 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 17 treesize of output 9 [2022-12-13 13:56:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-13 13:56:58,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:58,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571121311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:58,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:58,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 23 [2022-12-13 13:56:58,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201962983] [2022-12-13 13:56:58,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:58,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:56:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:56:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-12-13 13:56:58,821 INFO L87 Difference]: Start difference. First operand 197 states and 273 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-13 13:57:00,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:02,874 WARN L539 Checker$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 13:57:04,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:07,006 WARN L539 Checker$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 13:57:09,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:11,578 WARN L539 Checker$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 13:57:13,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:15,675 WARN L539 Checker$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 13:57:17,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:19,796 WARN L539 Checker$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 13:57:21,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:23,872 WARN L539 Checker$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 13:57:25,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:28,023 WARN L539 Checker$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 13:57:30,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:32,211 WARN L539 Checker$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 13:57:34,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:36,317 WARN L539 Checker$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 13:57:38,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:57:40,748 WARN L539 Checker$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 13:57:42,756 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 13:57:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:43,399 INFO L93 Difference]: Finished difference Result 430 states and 619 transitions. [2022-12-13 13:57:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:57:43,400 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 153 [2022-12-13 13:57:43,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:43,402 INFO L225 Difference]: With dead ends: 430 [2022-12-13 13:57:43,402 INFO L226 Difference]: Without dead ends: 273 [2022-12-13 13:57:43,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 177 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-12-13 13:57:43,403 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 333 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 85 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:43,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1025 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1357 Invalid, 21 Unknown, 0 Unchecked, 44.2s Time] [2022-12-13 13:57:43,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-12-13 13:57:43,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 218. [2022-12-13 13:57:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 56 states have call successors, (56), 18 states have call predecessors, (56), 21 states have return successors, (85), 56 states have call predecessors, (85), 54 states have call successors, (85) [2022-12-13 13:57:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 308 transitions. [2022-12-13 13:57:43,417 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 308 transitions. Word has length 153 [2022-12-13 13:57:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:43,417 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 308 transitions. [2022-12-13 13:57:43,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-13 13:57:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 308 transitions. [2022-12-13 13:57:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 13:57:43,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:43,418 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:43,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 13:57:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:43,619 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2092012826, now seen corresponding path program 1 times [2022-12-13 13:57:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:43,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111995443] [2022-12-13 13:57:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:43,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:57:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:57:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:57:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:57:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:57:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 13:57:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:57:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 13:57:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 13:57:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 13:57:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 13:57:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 13:57:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:57:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:57:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 13:57:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:57:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 13:57:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 13:57:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-12-13 13:57:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:43,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111995443] [2022-12-13 13:57:43,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111995443] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:43,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507272553] [2022-12-13 13:57:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:43,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:43,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:43,955 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:43,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:57:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:44,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:57:44,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-12-13 13:57:44,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:57:44,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507272553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:44,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:57:44,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-12-13 13:57:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477469392] [2022-12-13 13:57:44,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:44,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:57:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:57:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:57:44,438 INFO L87 Difference]: Start difference. First operand 218 states and 308 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 13:57:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:44,473 INFO L93 Difference]: Finished difference Result 381 states and 548 transitions. [2022-12-13 13:57:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:57:44,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 153 [2022-12-13 13:57:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:44,475 INFO L225 Difference]: With dead ends: 381 [2022-12-13 13:57:44,476 INFO L226 Difference]: Without dead ends: 206 [2022-12-13 13:57:44,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:57:44,477 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 6 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:44,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 661 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:57:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-13 13:57:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2022-12-13 13:57:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 130 states have (on average 1.1846153846153846) internal successors, (154), 133 states have internal predecessors, (154), 52 states have call successors, (52), 18 states have call predecessors, (52), 20 states have return successors, (71), 51 states have call predecessors, (71), 50 states have call successors, (71) [2022-12-13 13:57:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 277 transitions. [2022-12-13 13:57:44,498 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 277 transitions. Word has length 153 [2022-12-13 13:57:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:44,498 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 277 transitions. [2022-12-13 13:57:44,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 13:57:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 277 transitions. [2022-12-13 13:57:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 13:57:44,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:44,500 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:44,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 13:57:44,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 13:57:44,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash -704343220, now seen corresponding path program 1 times [2022-12-13 13:57:44,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:44,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478960422] [2022-12-13 13:57:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:44,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:57:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:57:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 13:57:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 13:57:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 13:57:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 13:57:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:57:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 13:57:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 13:57:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:57:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 13:57:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:57:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:57:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 13:57:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 13:57:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 13:57:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 13:57:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 13:57:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 13:57:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-12-13 13:57:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:45,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478960422] [2022-12-13 13:57:45,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478960422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:45,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:45,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:57:45,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183230536] [2022-12-13 13:57:45,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:45,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:57:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:45,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:57:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:57:45,799 INFO L87 Difference]: Start difference. First operand 203 states and 277 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-12-13 13:57:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:46,825 INFO L93 Difference]: Finished difference Result 380 states and 526 transitions. [2022-12-13 13:57:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:57:46,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 160 [2022-12-13 13:57:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:46,827 INFO L225 Difference]: With dead ends: 380 [2022-12-13 13:57:46,828 INFO L226 Difference]: Without dead ends: 209 [2022-12-13 13:57:46,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:57:46,829 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 133 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:46,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 441 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 13:57:46,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-12-13 13:57:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2022-12-13 13:57:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 130 states have (on average 1.176923076923077) internal successors, (153), 133 states have internal predecessors, (153), 52 states have call successors, (52), 18 states have call predecessors, (52), 20 states have return successors, (71), 51 states have call predecessors, (71), 50 states have call successors, (71) [2022-12-13 13:57:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 276 transitions. [2022-12-13 13:57:46,843 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 276 transitions. Word has length 160 [2022-12-13 13:57:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:46,843 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 276 transitions. [2022-12-13 13:57:46,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-12-13 13:57:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 276 transitions. [2022-12-13 13:57:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-13 13:57:46,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:46,844 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:46,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:57:46,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:46,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:46,845 INFO L85 PathProgramCache]: Analyzing trace with hash -824976309, now seen corresponding path program 1 times [2022-12-13 13:57:46,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:46,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371700703] [2022-12-13 13:57:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:46,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:57:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 13:57:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 13:57:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 13:57:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:57:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:57:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:57:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 13:57:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 13:57:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 13:57:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 13:57:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 13:57:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 13:57:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 13:57:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 13:57:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:57:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 13:57:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 13:57:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 13:57:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 13:57:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-12-13 13:57:47,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:47,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371700703] [2022-12-13 13:57:47,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371700703] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:47,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103738037] [2022-12-13 13:57:47,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:47,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:47,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:47,515 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:47,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:57:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:47,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 13:57:47,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-12-13 13:57:48,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:57:48,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103738037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:48,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:57:48,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-12-13 13:57:48,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085311608] [2022-12-13 13:57:48,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:48,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:57:48,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:48,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:57:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:57:48,083 INFO L87 Difference]: Start difference. First operand 203 states and 276 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 13:57:48,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:48,205 INFO L93 Difference]: Finished difference Result 386 states and 531 transitions. [2022-12-13 13:57:48,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:57:48,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 171 [2022-12-13 13:57:48,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:48,207 INFO L225 Difference]: With dead ends: 386 [2022-12-13 13:57:48,207 INFO L226 Difference]: Without dead ends: 203 [2022-12-13 13:57:48,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:57:48,208 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 2 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:48,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1438 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:57:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-13 13:57:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-12-13 13:57:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 133 states have internal predecessors, (152), 52 states have call successors, (52), 18 states have call predecessors, (52), 20 states have return successors, (71), 51 states have call predecessors, (71), 50 states have call successors, (71) [2022-12-13 13:57:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2022-12-13 13:57:48,219 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 171 [2022-12-13 13:57:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:48,219 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2022-12-13 13:57:48,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 13:57:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2022-12-13 13:57:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-13 13:57:48,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:48,220 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:48,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 13:57:48,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 13:57:48,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:48,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1045827896, now seen corresponding path program 1 times [2022-12-13 13:57:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:48,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808582132] [2022-12-13 13:57:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:57:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:57:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 13:57:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 13:57:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 13:57:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 13:57:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 13:57:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 13:57:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 13:57:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:57:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 13:57:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 13:57:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:57:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:57:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 13:57:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 13:57:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 13:57:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 13:57:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 13:57:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 13:57:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 13:57:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 13:57:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 13:57:49,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:49,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808582132] [2022-12-13 13:57:49,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808582132] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:49,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731726535] [2022-12-13 13:57:49,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:49,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:49,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:49,119 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:49,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:57:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:49,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 126 conjunts are in the unsatisfiable core [2022-12-13 13:57:49,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:49,677 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 13:57:49,755 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 13:57:49,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 13:57:49,849 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:57:49,850 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 12 treesize of output 14 [2022-12-13 13:57:49,900 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 13:57:51,007 INFO L321 Elim1Store]: treesize reduction 154, result has 24.5 percent of original size [2022-12-13 13:57:51,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 71 [2022-12-13 13:57:51,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2022-12-13 13:57:51,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 13:57:51,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2022-12-13 13:57:51,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 13:57:51,573 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 46 treesize of output 16 [2022-12-13 13:57:51,591 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-12-13 13:57:51,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 13:57:51,656 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2913 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2913) |c_#memory_int|)) is different from true [2022-12-13 13:57:51,661 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2914 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2914))) is different from true [2022-12-13 13:57:51,669 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 13:57:55,838 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 13:58:12,584 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-12-13 13:58:12,584 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 30 treesize of output 1 [2022-12-13 13:58:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 231 proven. 56 refuted. 0 times theorem prover too weak. 55 trivial. 2 not checked. [2022-12-13 13:58:12,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:15,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731726535] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:15,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:15,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 32] total 37 [2022-12-13 13:58:15,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964334401] [2022-12-13 13:58:15,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:15,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 13:58:15,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:15,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 13:58:15,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1557, Unknown=14, NotChecked=162, Total=1892 [2022-12-13 13:58:15,015 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand has 37 states, 35 states have (on average 4.371428571428571) internal successors, (153), 32 states have internal predecessors, (153), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 13 states have call successors, (50) [2022-12-13 13:58:17,056 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 13:58:19,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:58:21,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:58:23,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:58:33,394 WARN L539 Checker$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 13:58:40,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:58:42,717 WARN L539 Checker$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 13:58:48,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:58:54,945 WARN L539 Checker$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 13:58:56,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:01,429 WARN L539 Checker$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 13:59:03,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:11,940 WARN L539 Checker$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 13:59:13,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:16,000 WARN L539 Checker$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 13:59:18,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:20,053 WARN L539 Checker$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 13:59:22,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:24,688 WARN L539 Checker$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 13:59:27,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:29,169 WARN L539 Checker$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 13:59:35,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:37,560 WARN L539 Checker$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 13:59:39,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:43,658 WARN L539 Checker$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 13:59:45,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:47,717 WARN L539 Checker$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 13:59:49,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:59:51,825 WARN L539 Checker$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 13:59:56,143 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 13:59:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:59:56,781 INFO L93 Difference]: Finished difference Result 475 states and 622 transitions. [2022-12-13 13:59:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 13:59:56,782 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.371428571428571) internal successors, (153), 32 states have internal predecessors, (153), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 13 states have call successors, (50) Word has length 182 [2022-12-13 13:59:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:59:56,784 INFO L225 Difference]: With dead ends: 475 [2022-12-13 13:59:56,784 INFO L226 Difference]: Without dead ends: 282 [2022-12-13 13:59:56,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 257 SyntacticMatches, 20 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 58.6s TimeCoverageRelationStatistics Valid=641, Invalid=5349, Unknown=24, NotChecked=306, Total=6320 [2022-12-13 13:59:56,786 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 452 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 3173 mSolverCounterSat, 234 mSolverCounterUnsat, 59 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 3995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 3173 IncrementalHoareTripleChecker+Invalid, 59 IncrementalHoareTripleChecker+Unknown, 529 IncrementalHoareTripleChecker+Unchecked, 67.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:59:56,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1049 Invalid, 3995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 3173 Invalid, 59 Unknown, 529 Unchecked, 67.4s Time] [2022-12-13 13:59:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-12-13 13:59:56,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 256. [2022-12-13 13:59:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 174 states have (on average 1.1666666666666667) internal successors, (203), 176 states have internal predecessors, (203), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2022-12-13 13:59:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 315 transitions. [2022-12-13 13:59:56,801 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 315 transitions. Word has length 182 [2022-12-13 13:59:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:59:56,801 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 315 transitions. [2022-12-13 13:59:56,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.371428571428571) internal successors, (153), 32 states have internal predecessors, (153), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 13 states have call successors, (50) [2022-12-13 13:59:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 315 transitions. [2022-12-13 13:59:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-13 13:59:56,802 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:59:56,802 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:56,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:59:57,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:57,004 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:59:57,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:57,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1665951211, now seen corresponding path program 2 times [2022-12-13 13:59:57,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:57,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156269093] [2022-12-13 13:59:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:59:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:59:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:59:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:59:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 13:59:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 13:59:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:59:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 13:59:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 13:59:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 13:59:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 13:59:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 13:59:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:59:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 13:59:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 13:59:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:59:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:59:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 13:59:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 13:59:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 13:59:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 13:59:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 13:59:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 13:59:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 13:59:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 13:59:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 13:59:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 13:59:57,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:57,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156269093] [2022-12-13 13:59:57,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156269093] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:57,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244632500] [2022-12-13 13:59:57,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:59:57,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:57,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:57,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:57,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:59:58,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:59:58,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:58,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 3227 conjuncts, 113 conjunts are in the unsatisfiable core [2022-12-13 13:59:58,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:58,760 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 13:59:58,778 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 13:59:58,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:58,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 17 treesize of output 17 [2022-12-13 13:59:58,987 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 13:59:58,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 13:59:59,669 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-13 13:59:59,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-12-13 13:59:59,761 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 13:59:59,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 14:00:00,070 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 14:00:00,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 14:00:00,130 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3438 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3438) |c_#memory_int|)) is different from true [2022-12-13 14:00:00,134 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3440 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3440) |c_#memory_int|)) is different from true [2022-12-13 14:00:00,139 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3442 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3442) |c_#memory_int|)) is different from true [2022-12-13 14:00:00,147 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 14:00:04,309 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 14:00:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 231 proven. 56 refuted. 0 times theorem prover too weak. 55 trivial. 4 not checked. [2022-12-13 14:00:21,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:21,450 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3443 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_3443) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2022-12-13 14:00:21,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244632500] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:00:21,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:00:21,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 28] total 34 [2022-12-13 14:00:21,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827183064] [2022-12-13 14:00:21,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 14:00:21,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:21,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 14:00:21,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1355, Unknown=10, NotChecked=308, Total=1806 [2022-12-13 14:00:21,463 INFO L87 Difference]: Start difference. First operand 256 states and 315 transitions. Second operand has 34 states, 32 states have (on average 4.84375) internal successors, (155), 31 states have internal predecessors, (155), 11 states have call successors, (53), 11 states have call predecessors, (53), 12 states have return successors, (50), 10 states have call predecessors, (50), 11 states have call successors, (50) [2022-12-13 14:00:24,895 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 14:00:28,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:00:34,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:00:38,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:00:40,649 WARN L539 Checker$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 14:00:44,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:00:48,855 WARN L539 Checker$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 14:00:50,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:00:52,903 WARN L539 Checker$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 14:00:57,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:00:59,852 WARN L539 Checker$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 14:01:03,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:05,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:07,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:10,036 WARN L539 Checker$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 14:01:12,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:14,204 WARN L539 Checker$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 14:01:16,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:19,059 WARN L539 Checker$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 14:01:21,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:27,521 WARN L539 Checker$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 14:01:29,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:33,795 WARN L539 Checker$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 14:01:35,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:37,882 WARN L539 Checker$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 14:01:42,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:44,068 WARN L539 Checker$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 14:01:46,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:01:50,429 WARN L539 Checker$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 14:01:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:01:50,963 INFO L93 Difference]: Finished difference Result 471 states and 593 transitions. [2022-12-13 14:01:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 14:01:50,963 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 4.84375) internal successors, (155), 31 states have internal predecessors, (155), 11 states have call successors, (53), 11 states have call predecessors, (53), 12 states have return successors, (50), 10 states have call predecessors, (50), 11 states have call successors, (50) Word has length 183 [2022-12-13 14:01:50,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:01:50,965 INFO L225 Difference]: With dead ends: 471 [2022-12-13 14:01:50,965 INFO L226 Difference]: Without dead ends: 284 [2022-12-13 14:01:50,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 257 SyntacticMatches, 21 SemanticMatches, 69 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 45.5s TimeCoverageRelationStatistics Valid=409, Invalid=4008, Unknown=21, NotChecked=532, Total=4970 [2022-12-13 14:01:50,967 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 512 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 3231 mSolverCounterSat, 275 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 4343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 3231 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 790 IncrementalHoareTripleChecker+Unchecked, 65.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:01:50,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1114 Invalid, 4343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 3231 Invalid, 47 Unknown, 790 Unchecked, 65.8s Time] [2022-12-13 14:01:50,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-12-13 14:01:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 257. [2022-12-13 14:01:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 175 states have (on average 1.1657142857142857) internal successors, (204), 177 states have internal predecessors, (204), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2022-12-13 14:01:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 316 transitions. [2022-12-13 14:01:50,983 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 316 transitions. Word has length 183 [2022-12-13 14:01:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:01:50,983 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 316 transitions. [2022-12-13 14:01:50,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 4.84375) internal successors, (155), 31 states have internal predecessors, (155), 11 states have call successors, (53), 11 states have call predecessors, (53), 12 states have return successors, (50), 10 states have call predecessors, (50), 11 states have call successors, (50) [2022-12-13 14:01:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 316 transitions. [2022-12-13 14:01:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 14:01:50,984 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:01:50,984 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:01:50,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 14:01:51,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:51,185 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:01:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:01:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -585062504, now seen corresponding path program 3 times [2022-12-13 14:01:51,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:01:51,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770829917] [2022-12-13 14:01:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:51,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:01:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:01:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:01:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:01:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 14:01:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:01:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:01:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:01:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:01:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:01:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 14:01:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 14:01:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 14:01:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 14:01:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 14:01:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 14:01:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 14:01:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 14:01:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 14:01:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 14:01:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-12-13 14:01:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 14:01:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 14:01:52,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:52,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770829917] [2022-12-13 14:01:52,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770829917] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:01:52,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221341924] [2022-12-13 14:01:52,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:01:52,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:52,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:01:52,156 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:01:52,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 14:01:53,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 14:01:53,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:01:53,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:01:53,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:01:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-12-13 14:01:53,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:01:53,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221341924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:01:53,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:01:53,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-12-13 14:01:53,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614572344] [2022-12-13 14:01:53,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:01:53,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:01:53,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:01:53,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:01:53,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:01:53,464 INFO L87 Difference]: Start difference. First operand 257 states and 316 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 14:01:54,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:01:54,004 INFO L93 Difference]: Finished difference Result 429 states and 541 transitions. [2022-12-13 14:01:54,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:01:54,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 184 [2022-12-13 14:01:54,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:01:54,006 INFO L225 Difference]: With dead ends: 429 [2022-12-13 14:01:54,006 INFO L226 Difference]: Without dead ends: 257 [2022-12-13 14:01:54,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:01:54,007 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:01:54,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 14:01:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-12-13 14:01:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-12-13 14:01:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 175 states have (on average 1.1542857142857144) internal successors, (202), 177 states have internal predecessors, (202), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2022-12-13 14:01:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 314 transitions. [2022-12-13 14:01:54,023 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 314 transitions. Word has length 184 [2022-12-13 14:01:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:01:54,023 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 314 transitions. [2022-12-13 14:01:54,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-13 14:01:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 314 transitions. [2022-12-13 14:01:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 14:01:54,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:01:54,024 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:01:54,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 14:01:54,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 14:01:54,225 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:01:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:01:54,225 INFO L85 PathProgramCache]: Analyzing trace with hash 523752695, now seen corresponding path program 1 times [2022-12-13 14:01:54,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:01:54,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641072467] [2022-12-13 14:01:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:54,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:01:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:01:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:01:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:01:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 14:01:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:01:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:01:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:01:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:01:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:01:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 14:01:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 14:01:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 14:01:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:01:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 14:01:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 14:01:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 14:01:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 14:01:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 14:01:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 14:01:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 14:01:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-12-13 14:01:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 14:01:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 14:01:55,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:55,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641072467] [2022-12-13 14:01:55,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641072467] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:01:55,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738434686] [2022-12-13 14:01:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:55,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:55,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:01:55,170 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:01:55,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 14:01:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:55,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 144 conjunts are in the unsatisfiable core [2022-12-13 14:01:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:01:55,751 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 14:01:55,765 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 14:01:55,781 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (exists ((v_ArrVal_4821 Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_4821))) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-12-13 14:01:55,790 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_4821 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_4821)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-12-13 14:01:55,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:01:55,810 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 14:01:55,932 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 14:01:55,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:01:55,968 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 14:01:56,052 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 14:01:57,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:01:57,451 INFO L321 Elim1Store]: treesize reduction 140, result has 26.3 percent of original size [2022-12-13 14:01:57,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 40 treesize of output 71 [2022-12-13 14:01:57,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 41 treesize of output 17 [2022-12-13 14:01:57,588 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 14:01:57,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 14:01:58,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:01:58,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:01:58,114 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 14:01:58,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2022-12-13 14:01:58,177 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4831 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_4831) |c_#memory_int|)) is different from true [2022-12-13 14:01:58,180 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4832 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_4832) |c_#memory_int|)) is different from true [2022-12-13 14:01:58,183 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4835 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_4835) |c_#memory_int|)) is different from true [2022-12-13 14:01:58,186 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4836 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_4836) |c_#memory_int|)) is different from true [2022-12-13 14:01:58,193 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 14:02:00,353 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 14:02:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 225 proven. 23 refuted. 0 times theorem prover too weak. 92 trivial. 9 not checked. [2022-12-13 14:02:02,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:02:03,299 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4837 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_4837) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2022-12-13 14:02:03,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738434686] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:02:03,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:02:03,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 36] total 43 [2022-12-13 14:02:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085152562] [2022-12-13 14:02:03,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:02:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 14:02:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 14:02:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2092, Unknown=8, NotChecked=686, Total=2970 [2022-12-13 14:02:03,308 INFO L87 Difference]: Start difference. First operand 257 states and 314 transitions. Second operand has 43 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 38 states have internal predecessors, (146), 11 states have call successors, (52), 11 states have call predecessors, (52), 13 states have return successors, (50), 11 states have call predecessors, (50), 11 states have call successors, (50) [2022-12-13 14:02:05,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:07,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:09,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:11,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:14,022 WARN L539 Checker$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 14:02:16,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:28,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:31,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:36,586 WARN L539 Checker$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 14:02:39,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:42,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:44,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:46,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:51,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:53,137 WARN L539 Checker$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 14:02:57,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:02:59,293 WARN L539 Checker$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 14:03:03,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:05,408 WARN L539 Checker$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 14:03:07,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:10,403 WARN L539 Checker$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 14:03:12,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:15,157 WARN L539 Checker$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 14:03:17,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:20,688 WARN L539 Checker$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 14:03:23,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:28,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:32,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:34,502 WARN L539 Checker$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 14:03:38,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:40,856 WARN L539 Checker$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 14:03:42,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:47,086 WARN L539 Checker$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 14:03:51,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:03:53,805 WARN L539 Checker$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 14:03:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:03:54,729 INFO L93 Difference]: Finished difference Result 468 states and 584 transitions. [2022-12-13 14:03:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 14:03:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 38 states have internal predecessors, (146), 11 states have call successors, (52), 11 states have call predecessors, (52), 13 states have return successors, (50), 11 states have call predecessors, (50), 11 states have call successors, (50) Word has length 184 [2022-12-13 14:03:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:03:54,731 INFO L225 Difference]: With dead ends: 468 [2022-12-13 14:03:54,731 INFO L226 Difference]: Without dead ends: 281 [2022-12-13 14:03:54,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 253 SyntacticMatches, 13 SemanticMatches, 93 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2215 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=702, Invalid=6959, Unknown=23, NotChecked=1246, Total=8930 [2022-12-13 14:03:54,733 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 545 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 4203 mSolverCounterSat, 268 mSolverCounterUnsat, 62 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 6319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 4203 IncrementalHoareTripleChecker+Invalid, 62 IncrementalHoareTripleChecker+Unknown, 1786 IncrementalHoareTripleChecker+Unchecked, 82.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:03:54,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1452 Invalid, 6319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 4203 Invalid, 62 Unknown, 1786 Unchecked, 82.2s Time] [2022-12-13 14:03:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-12-13 14:03:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 258. [2022-12-13 14:03:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 176 states have (on average 1.1534090909090908) internal successors, (203), 178 states have internal predecessors, (203), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2022-12-13 14:03:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 315 transitions. [2022-12-13 14:03:54,764 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 315 transitions. Word has length 184 [2022-12-13 14:03:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:03:54,764 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 315 transitions. [2022-12-13 14:03:54,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 3.4761904761904763) internal successors, (146), 38 states have internal predecessors, (146), 11 states have call successors, (52), 11 states have call predecessors, (52), 13 states have return successors, (50), 11 states have call predecessors, (50), 11 states have call successors, (50) [2022-12-13 14:03:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 315 transitions. [2022-12-13 14:03:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 14:03:54,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:03:54,765 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:03:54,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 14:03:54,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 14:03:54,967 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:03:54,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:03:54,968 INFO L85 PathProgramCache]: Analyzing trace with hash -538195734, now seen corresponding path program 2 times [2022-12-13 14:03:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:03:54,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862777963] [2022-12-13 14:03:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:03:54,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:03:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:03:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:03:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:03:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:03:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:03:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 14:03:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:03:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:03:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:03:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:03:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:03:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:03:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 14:03:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 14:03:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 14:03:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:03:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:03:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 14:03:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 14:03:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 14:03:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 14:03:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 14:03:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 14:03:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 14:03:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 14:03:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 14:03:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 14:03:55,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:03:55,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862777963] [2022-12-13 14:03:55,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862777963] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:03:55,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733693438] [2022-12-13 14:03:55,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:03:55,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:03:55,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:03:55,922 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:03:55,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 14:03:56,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:03:56,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:03:56,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 3494 conjuncts, 139 conjunts are in the unsatisfiable core [2022-12-13 14:03:56,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:03:56,855 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 14:03:56,873 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 14:03:56,952 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 14:03:56,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 14:03:57,052 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 14:03:57,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:03:57,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 17 treesize of output 17 [2022-12-13 14:03:57,156 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 14:03:58,305 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-13 14:03:58,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-12-13 14:03:58,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 5 [2022-12-13 14:03:58,397 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 14:03:58,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 14:03:58,775 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 14:03:58,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 14:03:58,850 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5711 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_5711) |c_#memory_int|)) is different from true [2022-12-13 14:03:58,852 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5712 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_5712) |c_#memory_int|)) is different from true [2022-12-13 14:03:58,855 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5715 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_5715) |c_#memory_int|)) is different from true [2022-12-13 14:03:58,858 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5716 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_5716))) is different from true [2022-12-13 14:03:58,861 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5718 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_5718) |c_#memory_int|)) is different from true [2022-12-13 14:03:58,867 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 14:04:03,036 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 14:04:20,042 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-12-13 14:04:20,042 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 30 treesize of output 1 [2022-12-13 14:04:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 217 proven. 70 refuted. 0 times theorem prover too weak. 55 trivial. 11 not checked. [2022-12-13 14:04:20,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:20,447 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5719 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_5719) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2022-12-13 14:04:20,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733693438] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:20,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:20,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 34] total 42 [2022-12-13 14:04:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48947599] [2022-12-13 14:04:20,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:20,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-13 14:04:20,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-13 14:04:20,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1852, Unknown=10, NotChecked=546, Total=2550 [2022-12-13 14:04:20,456 INFO L87 Difference]: Start difference. First operand 258 states and 315 transitions. Second operand has 42 states, 41 states have (on average 3.8780487804878048) internal successors, (159), 37 states have internal predecessors, (159), 12 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 12 states have call successors, (50) [2022-12-13 14:04:22,647 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 14:04:25,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:04:46,805 WARN L539 Checker$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 14:04:51,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:04:57,006 WARN L539 Checker$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 14:05:01,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:07,081 WARN L539 Checker$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 14:05:11,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:15,303 WARN L539 Checker$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 14:05:17,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:19,344 WARN L539 Checker$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 14:05:23,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:26,937 WARN L539 Checker$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 14:05:31,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:33,082 WARN L539 Checker$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 14:05:35,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:37,150 WARN L539 Checker$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 14:05:39,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:41,332 WARN L539 Checker$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 14:05:43,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:46,432 WARN L539 Checker$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 14:05:52,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:54,951 WARN L539 Checker$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 14:05:59,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:01,311 WARN L539 Checker$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 14:06:03,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:05,418 WARN L539 Checker$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 14:06:09,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:11,665 WARN L539 Checker$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 14:06:15,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:17,958 WARN L539 Checker$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 14:06:22,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:24,194 WARN L539 Checker$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 14:06:26,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:30,542 WARN L539 Checker$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 14:06:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:31,212 INFO L93 Difference]: Finished difference Result 474 states and 592 transitions. [2022-12-13 14:06:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 14:06:31,213 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.8780487804878048) internal successors, (159), 37 states have internal predecessors, (159), 12 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 12 states have call successors, (50) Word has length 185 [2022-12-13 14:06:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:31,214 INFO L225 Difference]: With dead ends: 474 [2022-12-13 14:06:31,214 INFO L226 Difference]: Without dead ends: 287 [2022-12-13 14:06:31,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 251 SyntacticMatches, 20 SemanticMatches, 91 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 71.3s TimeCoverageRelationStatistics Valid=633, Invalid=6842, Unknown=31, NotChecked=1050, Total=8556 [2022-12-13 14:06:31,216 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 743 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 4062 mSolverCounterSat, 398 mSolverCounterUnsat, 66 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 5993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 4062 IncrementalHoareTripleChecker+Invalid, 66 IncrementalHoareTripleChecker+Unknown, 1467 IncrementalHoareTripleChecker+Unchecked, 82.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:31,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1231 Invalid, 5993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 4062 Invalid, 66 Unknown, 1467 Unchecked, 82.2s Time] [2022-12-13 14:06:31,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-13 14:06:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 259. [2022-12-13 14:06:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 177 states have (on average 1.152542372881356) internal successors, (204), 179 states have internal predecessors, (204), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2022-12-13 14:06:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 316 transitions. [2022-12-13 14:06:31,237 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 316 transitions. Word has length 185 [2022-12-13 14:06:31,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:31,237 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 316 transitions. [2022-12-13 14:06:31,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.8780487804878048) internal successors, (159), 37 states have internal predecessors, (159), 12 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 12 states have call successors, (50) [2022-12-13 14:06:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 316 transitions. [2022-12-13 14:06:31,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-13 14:06:31,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:31,238 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:31,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 14:06:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:06:31,439 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:06:31,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash 901141335, now seen corresponding path program 3 times [2022-12-13 14:06:31,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:06:31,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974546540] [2022-12-13 14:06:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:06:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:06:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:06:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:06:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:06:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:06:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 14:06:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:06:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:06:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:06:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:06:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:06:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:06:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 14:06:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 14:06:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 14:06:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:06:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:06:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 14:06:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 14:06:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 14:06:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 14:06:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 14:06:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 14:06:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 14:06:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 14:06:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-12-13 14:06:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 14:06:32,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:06:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974546540] [2022-12-13 14:06:32,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974546540] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:06:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626280800] [2022-12-13 14:06:32,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:06:32,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:06:32,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:06:32,526 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:06:32,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 14:07:26,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-12-13 14:07:26,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:07:26,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 3614 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-13 14:07:26,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:07:26,482 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 14:07:26,518 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (exists ((v_ArrVal_6757 Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_6757))) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-12-13 14:07:26,526 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_6757 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_6757)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-12-13 14:07:26,543 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 14:07:26,544 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 12 treesize of output 18 [2022-12-13 14:07:26,579 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (exists ((v_ArrVal_6758 Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_6758))) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) is different from true [2022-12-13 14:07:26,592 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 14:07:26,592 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 16 treesize of output 22 [2022-12-13 14:07:26,670 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-13 14:07:26,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2022-12-13 14:07:26,792 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 16 treesize of output 18 [2022-12-13 14:07:27,014 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 16 treesize of output 18 [2022-12-13 14:07:27,091 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-12-13 14:07:27,092 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 20 treesize of output 30 [2022-12-13 14:07:27,141 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6765 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_6765))) is different from true [2022-12-13 14:07:27,145 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6767 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_6767))) is different from true [2022-12-13 14:07:27,148 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6768 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_6768) |c_#memory_int|)) is different from true [2022-12-13 14:07:27,152 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6770 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_6770))) is different from true [2022-12-13 14:07:27,156 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6773 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_6773))) is different from true [2022-12-13 14:07:27,160 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6774 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_6774) |c_#memory_int|)) is different from true [2022-12-13 14:07:27,165 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 16 treesize of output 18 [2022-12-13 14:07:27,291 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 16 treesize of output 18 [2022-12-13 14:07:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 18 not checked. [2022-12-13 14:07:27,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:07:27,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626280800] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:07:27,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:07:27,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 25] total 34 [2022-12-13 14:07:27,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822337890] [2022-12-13 14:07:27,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:07:27,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 14:07:27,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:07:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 14:07:27,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=786, Unknown=15, NotChecked=576, Total=1482 [2022-12-13 14:07:27,858 INFO L87 Difference]: Start difference. First operand 259 states and 316 transitions. Second operand has 34 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (50), 8 states have call predecessors, (50), 9 states have call successors, (50) [2022-12-13 14:07:45,484 WARN L233 SmtUtils]: Spent 16.07s on a formula simplification. DAG size of input: 50 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:07:49,895 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 14:07:52,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:07:54,964 WARN L539 Checker$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 14:07:59,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:04,669 WARN L539 Checker$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 14:08:09,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:14,440 WARN L539 Checker$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 14:08:18,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:20,933 WARN L539 Checker$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 14:08:25,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:29,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:31,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:33,468 WARN L539 Checker$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 14:08:35,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:37,711 WARN L539 Checker$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 14:08:39,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:41,807 WARN L539 Checker$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 14:08:43,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:46,017 WARN L539 Checker$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 14:08:48,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:50,276 WARN L539 Checker$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 14:08:52,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:54,600 WARN L539 Checker$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 14:08:56,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:58,964 WARN L539 Checker$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 14:09:01,051 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 14:09:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:09:01,548 INFO L93 Difference]: Finished difference Result 478 states and 599 transitions. [2022-12-13 14:09:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 14:09:01,548 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (50), 8 states have call predecessors, (50), 9 states have call successors, (50) Word has length 186 [2022-12-13 14:09:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:09:01,549 INFO L225 Difference]: With dead ends: 478 [2022-12-13 14:09:01,549 INFO L226 Difference]: Without dead ends: 291 [2022-12-13 14:09:01,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 278 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=275, Invalid=2379, Unknown=34, NotChecked=972, Total=3660 [2022-12-13 14:09:01,551 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 339 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 268 mSolverCounterUnsat, 50 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 4819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 50 IncrementalHoareTripleChecker+Unknown, 2256 IncrementalHoareTripleChecker+Unchecked, 59.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:09:01,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 870 Invalid, 4819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2245 Invalid, 50 Unknown, 2256 Unchecked, 59.7s Time] [2022-12-13 14:09:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-12-13 14:09:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 260. [2022-12-13 14:09:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 178 states have (on average 1.151685393258427) internal successors, (205), 180 states have internal predecessors, (205), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2022-12-13 14:09:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 317 transitions. [2022-12-13 14:09:01,589 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 317 transitions. Word has length 186 [2022-12-13 14:09:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:09:01,590 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 317 transitions. [2022-12-13 14:09:01,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (50), 8 states have call predecessors, (50), 9 states have call successors, (50) [2022-12-13 14:09:01,590 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 317 transitions. [2022-12-13 14:09:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-12-13 14:09:01,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:09:01,591 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:09:01,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 14:09:01,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:09:01,792 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:09:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:09:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1724049782, now seen corresponding path program 4 times [2022-12-13 14:09:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:09:01,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734864241] [2022-12-13 14:09:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:09:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:09:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:09:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:09:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:09:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:09:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:09:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 14:09:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:09:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:09:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:09:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:09:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:09:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:09:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 14:09:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:02,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 14:09:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 14:09:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:09:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:09:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 14:09:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 14:09:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 14:09:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 14:09:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 14:09:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 14:09:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 14:09:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 14:09:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 14:09:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 14:09:03,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:09:03,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734864241] [2022-12-13 14:09:03,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734864241] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:09:03,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674715370] [2022-12-13 14:09:03,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:09:03,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:09:03,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:09:03,118 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:09:03,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c459a-c687-404e-b772-619bf2d5eea2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 14:09:03,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:09:03,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:09:03,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 3756 conjuncts, 153 conjunts are in the unsatisfiable core [2022-12-13 14:09:03,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:09:04,002 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 14:09:04,116 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 14:09:04,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 14:09:04,251 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:09:04,251 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 12 treesize of output 14 [2022-12-13 14:09:04,340 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 14:09:05,808 INFO L321 Elim1Store]: treesize reduction 138, result has 20.7 percent of original size [2022-12-13 14:09:05,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 54 [2022-12-13 14:09:05,939 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 14:09:05,951 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 14:09:05,952 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 52 treesize of output 51 [2022-12-13 14:09:06,708 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 14:09:06,708 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 52 treesize of output 51 [2022-12-13 14:09:06,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 14:09:06,854 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 14:09:06,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 57 treesize of output 21 [2022-12-13 14:09:06,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:09:06,878 INFO L321 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-12-13 14:09:06,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 28 [2022-12-13 14:09:06,960 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7999 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_7999))) is different from true [2022-12-13 14:09:06,963 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8001 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_8001) |c_#memory_int|)) is different from true [2022-12-13 14:09:06,966 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8003 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_8003))) is different from true [2022-12-13 14:09:06,969 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8004 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_8004))) is different from true [2022-12-13 14:09:06,972 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8007 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_8007))) is different from true [2022-12-13 14:09:06,976 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8008 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_8008) |c_#memory_int|)) is different from true [2022-12-13 14:09:06,980 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8010 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_8010))) is different from true [2022-12-13 14:09:06,988 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 14:09:11,201 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 14:09:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 227 proven. 63 refuted. 0 times theorem prover too weak. 52 trivial. 22 not checked. [2022-12-13 14:09:28,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:09:29,326 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8011 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_8011) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2022-12-13 14:09:29,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674715370] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:09:29,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:09:29,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 45] total 55 [2022-12-13 14:09:29,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477616963] [2022-12-13 14:09:29,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:09:29,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-13 14:09:29,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:09:29,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-13 14:09:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3321, Unknown=11, NotChecked=984, Total=4556 [2022-12-13 14:09:29,337 INFO L87 Difference]: Start difference. First operand 260 states and 317 transitions. Second operand has 55 states, 52 states have (on average 3.1923076923076925) internal successors, (166), 48 states have internal predecessors, (166), 14 states have call successors, (53), 12 states have call predecessors, (53), 14 states have return successors, (50), 13 states have call predecessors, (50), 14 states have call successors, (50) [2022-12-13 14:09:31,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:34,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:36,449 WARN L539 Checker$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 14:09:47,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:53,091 WARN L539 Checker$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 14:09:58,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:03,683 WARN L539 Checker$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 14:10:08,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:14,332 WARN L539 Checker$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 14:10:19,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:21,467 WARN L539 Checker$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 14:10:25,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:29,689 WARN L539 Checker$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 14:10:31,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:33,735 WARN L539 Checker$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 14:10:38,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:41,172 WARN L539 Checker$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 14:10:47,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:49,358 WARN L539 Checker$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 14:10:51,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:53,431 WARN L539 Checker$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 14:10:55,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:57,624 WARN L539 Checker$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 14:10:59,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:02,529 WARN L539 Checker$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 14:11:06,955 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]