./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:14:34,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:14:34,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:14:34,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:14:34,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:14:34,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:14:34,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:14:34,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:14:34,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:14:34,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:14:34,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:14:34,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:14:34,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:14:34,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:14:34,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:14:34,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:14:34,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:14:34,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:14:34,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:14:34,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:14:34,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:14:34,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:14:34,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:14:34,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:14:34,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:14:34,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:14:34,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:14:34,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:14:34,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:14:34,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:14:34,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:14:34,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:14:34,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:14:34,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:14:34,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:14:34,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:14:34,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:14:34,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:14:34,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:14:34,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:14:34,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:14:34,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-25 17:14:34,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:14:34,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:14:34,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:14:34,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:14:34,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:14:34,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:14:34,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:14:34,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:14:34,274 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:14:34,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:14:34,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:14:34,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:14:34,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:14:34,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:14:34,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:14:34,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:14:34,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:14:34,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:14:34,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:14:34,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:14:34,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:14:34,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:14:34,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:14:34,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:14:34,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:14:34,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:14:34,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:14:34,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:14:34,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:14:34,280 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:14:34,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:14:34,281 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_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ab51b5126028da19fd5973a25f590452a4763e1cc4e396aeee438668151298 [2022-11-25 17:14:34,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:14:34,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:14:34,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:14:34,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:14:34,624 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:14:34,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2022-11-25 17:14:37,650 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:14:38,227 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:14:38,229 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2022-11-25 17:14:38,273 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/data/eb378b7de/eef146847f314bb78e770de0a41c1652/FLAG5b4d4ebf3 [2022-11-25 17:14:38,291 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/data/eb378b7de/eef146847f314bb78e770de0a41c1652 [2022-11-25 17:14:38,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:14:38,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:14:38,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:14:38,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:14:38,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:14:38,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:14:38" (1/1) ... [2022-11-25 17:14:38,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb07ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:38, skipping insertion in model container [2022-11-25 17:14:38,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:14:38" (1/1) ... [2022-11-25 17:14:38,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:14:38,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:14:38,695 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_903254e1-04af-4e83-af3c-8e6c357eea6c/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2022-11-25 17:14:38,705 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_903254e1-04af-4e83-af3c-8e6c357eea6c/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2022-11-25 17:14:39,924 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,925 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,925 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,926 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,927 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,942 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,943 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,945 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,946 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,948 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,949 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,950 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:39,950 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:40,073 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:14:40,074 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:14:40,075 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:14:40,080 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 17:14:40,082 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 17:14:40,083 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 17:14:40,567 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 17:14:40,568 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 17:14:40,570 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 17:14:40,571 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 17:14:40,572 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 17:14:40,573 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 17:14:40,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 17:14:40,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 17:14:40,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 17:14:40,576 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 17:14:40,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 17:14:40,772 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 17:14:40,833 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 17:14:41,081 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,082 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,103 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,104 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,109 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,110 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,123 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,126 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,127 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,127 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,128 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,128 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,130 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:14:41,232 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:14:41,260 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_903254e1-04af-4e83-af3c-8e6c357eea6c/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2022-11-25 17:14:41,261 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_903254e1-04af-4e83-af3c-8e6c357eea6c/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2022-11-25 17:14:41,309 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,310 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,310 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,311 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,311 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,322 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,322 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,323 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,323 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,324 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,325 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,325 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,325 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,331 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:14:41,332 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:14:41,332 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:14:41,335 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 17:14:41,336 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 17:14:41,337 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 17:14:41,365 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 17:14:41,366 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 17:14:41,367 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 17:14:41,368 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 17:14:41,370 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 17:14:41,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 17:14:41,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 17:14:41,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 17:14:41,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 17:14:41,374 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 17:14:41,375 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 17:14:41,405 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 17:14:41,453 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 17:14:41,530 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,531 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,540 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,540 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,544 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,544 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,560 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,561 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,563 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,563 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,563 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,565 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,565 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:14:41,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:14:41,947 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:14:41,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41 WrapperNode [2022-11-25 17:14:41,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:14:41,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:14:41,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:14:41,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:14:41,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,176 INFO L138 Inliner]: procedures = 774, calls = 2451, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 640 [2022-11-25 17:14:42,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:14:42,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:14:42,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:14:42,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:14:42,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,281 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:14:42,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:14:42,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:14:42,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:14:42,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (1/1) ... [2022-11-25 17:14:42,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:14:42,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:42,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:14:42,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:14:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-25 17:14:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:14:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-25 17:14:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-25 17:14:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 17:14:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 17:14:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-25 17:14:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-25 17:14:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:14:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:14:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_next [2022-11-25 17:14:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_next [2022-11-25 17:14:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:14:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:14:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:14:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 17:14:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 17:14:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-25 17:14:42,380 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-25 17:14:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:14:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-25 17:14:42,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-25 17:14:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:14:42,380 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-25 17:14:42,381 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-25 17:14:42,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:14:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-25 17:14:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-25 17:14:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:14:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-25 17:14:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-25 17:14:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-11-25 17:14:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-11-25 17:14:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 17:14:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 17:14:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-11-25 17:14:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-11-25 17:14:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-25 17:14:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-25 17:14:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 17:14:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-25 17:14:42,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-25 17:14:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-25 17:14:42,392 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-25 17:14:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:14:42,796 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:14:42,799 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:14:44,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:14:44,084 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:14:44,084 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:14:44,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:14:44 BoogieIcfgContainer [2022-11-25 17:14:44,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:14:44,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:14:44,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:14:44,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:14:44,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:14:38" (1/3) ... [2022-11-25 17:14:44,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e92baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:14:44, skipping insertion in model container [2022-11-25 17:14:44,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:41" (2/3) ... [2022-11-25 17:14:44,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e92baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:14:44, skipping insertion in model container [2022-11-25 17:14:44,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:14:44" (3/3) ... [2022-11-25 17:14:44,100 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness.i [2022-11-25 17:14:44,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:14:44,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:14:44,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:14:44,198 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;@645f20e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:14:44,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:14:44,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 107 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-25 17:14:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-25 17:14:44,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:44,225 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:44,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:44,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:44,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1338571704, now seen corresponding path program 1 times [2022-11-25 17:14:44,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:44,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334858742] [2022-11-25 17:14:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:44,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:44,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:44,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334858742] [2022-11-25 17:14:44,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 17:14:44,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145816342] [2022-11-25 17:14:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:44,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:44,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:44,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:44,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:14:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:45,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:14:45,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-25 17:14:45,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:14:45,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145816342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:45,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:45,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:14:45,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836078092] [2022-11-25 17:14:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:14:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:14:45,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:14:45,703 INFO L87 Difference]: Start difference. First operand has 167 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 107 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-25 17:14:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:45,748 INFO L93 Difference]: Finished difference Result 326 states and 449 transitions. [2022-11-25 17:14:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:14:45,751 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2022-11-25 17:14:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:45,761 INFO L225 Difference]: With dead ends: 326 [2022-11-25 17:14:45,761 INFO L226 Difference]: Without dead ends: 161 [2022-11-25 17:14:45,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:14:45,769 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:45,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:14:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-25 17:14:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-11-25 17:14:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-25 17:14:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2022-11-25 17:14:45,833 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 154 [2022-11-25 17:14:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:45,836 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2022-11-25 17:14:45,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-25 17:14:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2022-11-25 17:14:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-25 17:14:45,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:45,846 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:45,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:14:46,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 17:14:46,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash 539862202, now seen corresponding path program 1 times [2022-11-25 17:14:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:46,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400859830] [2022-11-25 17:14:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:46,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:14:46,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235721342] [2022-11-25 17:14:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:46,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:46,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:46,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:46,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:14:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:46,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:14:46,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 17:14:47,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:14:47,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:47,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400859830] [2022-11-25 17:14:47,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:14:47,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235721342] [2022-11-25 17:14:47,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235721342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:47,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:47,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:14:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537969563] [2022-11-25 17:14:47,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:14:47,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:14:47,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:14:47,145 INFO L87 Difference]: Start difference. First operand 161 states and 209 transitions. Second operand has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-25 17:14:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:47,420 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2022-11-25 17:14:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:14:47,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 154 [2022-11-25 17:14:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:47,434 INFO L225 Difference]: With dead ends: 297 [2022-11-25 17:14:47,434 INFO L226 Difference]: Without dead ends: 163 [2022-11-25 17:14:47,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:14:47,441 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 173 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:47,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 646 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:14:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-25 17:14:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-25 17:14:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2022-11-25 17:14:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 213 transitions. [2022-11-25 17:14:47,473 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 213 transitions. Word has length 154 [2022-11-25 17:14:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:47,474 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 213 transitions. [2022-11-25 17:14:47,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-25 17:14:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 213 transitions. [2022-11-25 17:14:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-25 17:14:47,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:47,478 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:47,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:14:47,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:47,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:47,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash 706357182, now seen corresponding path program 1 times [2022-11-25 17:14:47,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:47,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487185306] [2022-11-25 17:14:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:47,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:47,792 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:14:47,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089526582] [2022-11-25 17:14:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:47,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:47,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:47,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:47,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:14:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:48,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:14:48,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 102 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-25 17:14:48,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:14:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-11-25 17:14:48,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:48,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487185306] [2022-11-25 17:14:48,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:14:48,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089526582] [2022-11-25 17:14:48,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089526582] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:14:48,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:14:48,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-25 17:14:48,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317665714] [2022-11-25 17:14:48,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:14:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:14:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:14:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:14:48,958 INFO L87 Difference]: Start difference. First operand 163 states and 213 transitions. Second operand has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:14:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:49,452 INFO L93 Difference]: Finished difference Result 249 states and 329 transitions. [2022-11-25 17:14:49,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:14:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) Word has length 155 [2022-11-25 17:14:49,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:49,467 INFO L225 Difference]: With dead ends: 249 [2022-11-25 17:14:49,467 INFO L226 Difference]: Without dead ends: 163 [2022-11-25 17:14:49,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:14:49,469 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 284 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:49,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1071 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:14:49,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-25 17:14:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-25 17:14:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 42 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-25 17:14:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2022-11-25 17:14:49,493 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 155 [2022-11-25 17:14:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:49,494 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2022-11-25 17:14:49,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 8 states have call successors, (48), 5 states have call predecessors, (48), 4 states have return successors, (44), 6 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:14:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2022-11-25 17:14:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:14:49,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:49,498 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:49,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:14:49,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:49,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1731864020, now seen corresponding path program 2 times [2022-11-25 17:14:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:49,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909471328] [2022-11-25 17:14:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:49,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:14:49,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755811881] [2022-11-25 17:14:49,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:14:49,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:49,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:49,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:49,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:14:50,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:14:50,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:14:50,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:14:50,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 6 proven. 122 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-25 17:14:50,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:14:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-25 17:14:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:51,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909471328] [2022-11-25 17:14:51,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:14:51,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755811881] [2022-11-25 17:14:51,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755811881] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:51,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:14:51,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 17 [2022-11-25 17:14:51,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576520085] [2022-11-25 17:14:51,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:51,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:14:51,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:51,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:14:51,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:14:51,123 INFO L87 Difference]: Start difference. First operand 163 states and 211 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-25 17:14:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:51,764 INFO L93 Difference]: Finished difference Result 231 states and 301 transitions. [2022-11-25 17:14:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:14:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) Word has length 156 [2022-11-25 17:14:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:51,772 INFO L225 Difference]: With dead ends: 231 [2022-11-25 17:14:51,772 INFO L226 Difference]: Without dead ends: 161 [2022-11-25 17:14:51,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:14:51,775 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 224 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:51,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1137 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:14:51,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-25 17:14:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-11-25 17:14:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 102 states have internal predecessors, (123), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-25 17:14:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 208 transitions. [2022-11-25 17:14:51,805 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 208 transitions. Word has length 156 [2022-11-25 17:14:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:51,805 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 208 transitions. [2022-11-25 17:14:51,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 6 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-25 17:14:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 208 transitions. [2022-11-25 17:14:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-25 17:14:51,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:51,809 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:51,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:14:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:52,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2064715578, now seen corresponding path program 1 times [2022-11-25 17:14:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:52,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212649500] [2022-11-25 17:14:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:52,160 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:14:52,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831078580] [2022-11-25 17:14:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:52,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:52,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:52,162 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:52,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:14:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:52,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:14:52,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-25 17:14:52,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:14:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:52,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212649500] [2022-11-25 17:14:52,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:14:52,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831078580] [2022-11-25 17:14:52,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831078580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:52,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:52,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:14:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008154398] [2022-11-25 17:14:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:52,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:14:52,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:14:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:14:52,849 INFO L87 Difference]: Start difference. First operand 161 states and 208 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 17:14:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:52,887 INFO L93 Difference]: Finished difference Result 315 states and 408 transitions. [2022-11-25 17:14:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:14:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 155 [2022-11-25 17:14:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:52,889 INFO L225 Difference]: With dead ends: 315 [2022-11-25 17:14:52,890 INFO L226 Difference]: Without dead ends: 166 [2022-11-25 17:14:52,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:14:52,891 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:52,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 815 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:14:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-25 17:14:52,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-25 17:14:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 106 states have internal predecessors, (127), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-11-25 17:14:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2022-11-25 17:14:52,908 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 155 [2022-11-25 17:14:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:52,909 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2022-11-25 17:14:52,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-25 17:14:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2022-11-25 17:14:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 17:14:52,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:52,912 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:52,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:14:53,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:53,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1425847546, now seen corresponding path program 1 times [2022-11-25 17:14:53,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:53,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467415161] [2022-11-25 17:14:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:53,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:14:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:14:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:14:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:14:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 17:14:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:14:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:14:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:14:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:14:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:14:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 17:14:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 17:14:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:14:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:14:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 17:14:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 17:14:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 17:14:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 17:14:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:14:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:14:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-25 17:14:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:55,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467415161] [2022-11-25 17:14:55,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467415161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:55,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452476841] [2022-11-25 17:14:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:55,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:55,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:55,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:55,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:14:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:56,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 17:14:56,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:56,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:14:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 17:14:56,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:14:56,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452476841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:56,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:14:56,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-11-25 17:14:56,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379213129] [2022-11-25 17:14:56,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:56,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:14:56,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:14:56,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:14:56,599 INFO L87 Difference]: Start difference. First operand 166 states and 213 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-25 17:14:59,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:15:01,105 WARN L539 Checker$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] [2022-11-25 17:15:03,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:05,916 WARN L539 Checker$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] [2022-11-25 17:15:08,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:10,020 WARN L539 Checker$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] [2022-11-25 17:15:12,192 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] [2022-11-25 17:15:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:15:12,320 INFO L93 Difference]: Finished difference Result 407 states and 524 transitions. [2022-11-25 17:15:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:15:12,321 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 167 [2022-11-25 17:15:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:15:12,323 INFO L225 Difference]: With dead ends: 407 [2022-11-25 17:15:12,323 INFO L226 Difference]: Without dead ends: 265 [2022-11-25 17:15:12,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-11-25 17:15:12,325 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 178 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 39 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:15:12,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1334 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 459 Invalid, 7 Unknown, 0 Unchecked, 15.5s Time] [2022-11-25 17:15:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-25 17:15:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 255. [2022-11-25 17:15:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 166 states have (on average 1.2228915662650603) internal successors, (203), 169 states have internal predecessors, (203), 60 states have call successors, (60), 27 states have call predecessors, (60), 28 states have return successors, (65), 58 states have call predecessors, (65), 59 states have call successors, (65) [2022-11-25 17:15:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 328 transitions. [2022-11-25 17:15:12,354 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 328 transitions. Word has length 167 [2022-11-25 17:15:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:15:12,354 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 328 transitions. [2022-11-25 17:15:12,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-25 17:15:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 328 transitions. [2022-11-25 17:15:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 17:15:12,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:15:12,358 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:12,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:12,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:12,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:15:12,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:12,570 INFO L85 PathProgramCache]: Analyzing trace with hash -440861128, now seen corresponding path program 1 times [2022-11-25 17:15:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:12,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511229487] [2022-11-25 17:15:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:15:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:15:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:15:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:15:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 17:15:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:15:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:15:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:15:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:15:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:15:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 17:15:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 17:15:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:15:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:15:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 17:15:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 17:15:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 17:15:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 17:15:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:15:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:15:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-25 17:15:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:13,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511229487] [2022-11-25 17:15:13,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511229487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:13,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892318522] [2022-11-25 17:15:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:13,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:13,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:13,686 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:13,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:15:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:14,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:15:14,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-25 17:15:14,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:14,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892318522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:14,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:14,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-25 17:15:14,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724921685] [2022-11-25 17:15:14,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:14,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:15:14,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:15:14,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:15:14,434 INFO L87 Difference]: Start difference. First operand 255 states and 328 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-25 17:15:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:15:14,665 INFO L93 Difference]: Finished difference Result 489 states and 632 transitions. [2022-11-25 17:15:14,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:15:14,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 167 [2022-11-25 17:15:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:15:14,668 INFO L225 Difference]: With dead ends: 489 [2022-11-25 17:15:14,669 INFO L226 Difference]: Without dead ends: 267 [2022-11-25 17:15:14,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:15:14,670 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 207 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:15:14,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 684 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:15:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-25 17:15:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 264. [2022-11-25 17:15:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 172 states have (on average 1.2209302325581395) internal successors, (210), 176 states have internal predecessors, (210), 62 states have call successors, (62), 27 states have call predecessors, (62), 29 states have return successors, (69), 60 states have call predecessors, (69), 61 states have call successors, (69) [2022-11-25 17:15:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 341 transitions. [2022-11-25 17:15:14,698 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 341 transitions. Word has length 167 [2022-11-25 17:15:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:15:14,698 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 341 transitions. [2022-11-25 17:15:14,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-25 17:15:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 341 transitions. [2022-11-25 17:15:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-25 17:15:14,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:15:14,702 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:14,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:14,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:15:14,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:15:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash -529280984, now seen corresponding path program 1 times [2022-11-25 17:15:14,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:14,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380564532] [2022-11-25 17:15:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:14,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:15:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:15:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:15:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:15:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 17:15:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:15:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:15:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:15:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:15:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:15:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 17:15:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 17:15:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:15:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 17:15:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:15:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 17:15:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 17:15:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 17:15:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 17:15:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:15:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:15:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-11-25 17:15:16,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:16,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380564532] [2022-11-25 17:15:16,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380564532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:16,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425761955] [2022-11-25 17:15:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:16,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:16,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:16,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:16,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:15:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:16,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:15:16,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:19,031 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-11-25 17:15:27,096 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:15:35,174 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:15:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-25 17:15:35,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:35,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425761955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:35,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:35,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-25 17:15:35,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578999818] [2022-11-25 17:15:35,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:35,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:15:35,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:15:35,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-11-25 17:15:35,202 INFO L87 Difference]: Start difference. First operand 264 states and 341 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-25 17:15:36,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:38,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:44,747 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:15:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:15:45,280 INFO L93 Difference]: Finished difference Result 513 states and 675 transitions. [2022-11-25 17:15:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:15:45,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) Word has length 173 [2022-11-25 17:15:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:15:45,283 INFO L225 Difference]: With dead ends: 513 [2022-11-25 17:15:45,283 INFO L226 Difference]: Without dead ends: 278 [2022-11-25 17:15:45,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=67, Invalid=314, Unknown=3, NotChecked=36, Total=420 [2022-11-25 17:15:45,285 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 12 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:15:45,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1107 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 1 Unknown, 219 Unchecked, 3.8s Time] [2022-11-25 17:15:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-25 17:15:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2022-11-25 17:15:45,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 180 states have (on average 1.211111111111111) internal successors, (218), 184 states have internal predecessors, (218), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (71), 62 states have call predecessors, (71), 63 states have call successors, (71) [2022-11-25 17:15:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 353 transitions. [2022-11-25 17:15:45,313 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 353 transitions. Word has length 173 [2022-11-25 17:15:45,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:15:45,314 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 353 transitions. [2022-11-25 17:15:45,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-25 17:15:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 353 transitions. [2022-11-25 17:15:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-25 17:15:45,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:15:45,318 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:45,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:45,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:45,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:15:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:45,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1330201512, now seen corresponding path program 1 times [2022-11-25 17:15:45,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:45,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869324019] [2022-11-25 17:15:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:45,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:15:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:15:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:15:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:15:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 17:15:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:15:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:15:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:46,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:15:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:15:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:15:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:15:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 17:15:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 17:15:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 17:15:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 17:15:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:15:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 17:15:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-25 17:15:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-25 17:15:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-25 17:15:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:15:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:15:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-11-25 17:15:47,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869324019] [2022-11-25 17:15:47,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869324019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099941599] [2022-11-25 17:15:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:47,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:47,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:47,961 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:47,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:15:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:48,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:15:48,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:48,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:15:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-25 17:15:48,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:48,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099941599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:48,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:48,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2022-11-25 17:15:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340532117] [2022-11-25 17:15:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:48,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:15:48,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:15:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:15:48,978 INFO L87 Difference]: Start difference. First operand 276 states and 353 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-25 17:15:51,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:53,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:55,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:57,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:15:59,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:16:01,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:03,510 WARN L539 Checker$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] [2022-11-25 17:16:05,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:07,605 WARN L539 Checker$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] [2022-11-25 17:16:10,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:16:12,283 WARN L539 Checker$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] [2022-11-25 17:16:14,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:16,457 WARN L539 Checker$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] [2022-11-25 17:16:18,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:20,748 WARN L539 Checker$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] [2022-11-25 17:16:22,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:24,996 WARN L539 Checker$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] [2022-11-25 17:16:27,129 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] [2022-11-25 17:16:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:27,315 INFO L93 Difference]: Finished difference Result 594 states and 747 transitions. [2022-11-25 17:16:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:16:27,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 178 [2022-11-25 17:16:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:27,318 INFO L225 Difference]: With dead ends: 594 [2022-11-25 17:16:27,318 INFO L226 Difference]: Without dead ends: 341 [2022-11-25 17:16:27,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2022-11-25 17:16:27,320 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 325 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 97 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:27,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 1352 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 557 Invalid, 18 Unknown, 0 Unchecked, 38.1s Time] [2022-11-25 17:16:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-25 17:16:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 331. [2022-11-25 17:16:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 217 states have (on average 1.1935483870967742) internal successors, (259), 222 states have internal predecessors, (259), 72 states have call successors, (72), 39 states have call predecessors, (72), 41 states have return successors, (80), 69 states have call predecessors, (80), 71 states have call successors, (80) [2022-11-25 17:16:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2022-11-25 17:16:27,393 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 178 [2022-11-25 17:16:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:27,394 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2022-11-25 17:16:27,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-25 17:16:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2022-11-25 17:16:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-25 17:16:27,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:27,397 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:27,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:27,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 45174553, now seen corresponding path program 1 times [2022-11-25 17:16:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:27,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122007164] [2022-11-25 17:16:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:27,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:27,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:16:27,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056965168] [2022-11-25 17:16:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:27,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:27,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:27,689 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:27,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:16:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:28,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:16:28,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-25 17:16:28,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:28,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:28,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122007164] [2022-11-25 17:16:28,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:16:28,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056965168] [2022-11-25 17:16:28,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056965168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:28,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:28,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:16:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195335968] [2022-11-25 17:16:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:16:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:16:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:16:28,472 INFO L87 Difference]: Start difference. First operand 331 states and 411 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 17:16:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:28,521 INFO L93 Difference]: Finished difference Result 611 states and 761 transitions. [2022-11-25 17:16:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:16:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 193 [2022-11-25 17:16:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:28,525 INFO L225 Difference]: With dead ends: 611 [2022-11-25 17:16:28,526 INFO L226 Difference]: Without dead ends: 336 [2022-11-25 17:16:28,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:16:28,527 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:28,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 815 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:16:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-25 17:16:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2022-11-25 17:16:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 221 states have (on average 1.1900452488687783) internal successors, (263), 226 states have internal predecessors, (263), 72 states have call successors, (72), 39 states have call predecessors, (72), 42 states have return successors, (81), 70 states have call predecessors, (81), 71 states have call successors, (81) [2022-11-25 17:16:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 416 transitions. [2022-11-25 17:16:28,564 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 416 transitions. Word has length 193 [2022-11-25 17:16:28,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:28,567 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 416 transitions. [2022-11-25 17:16:28,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 17:16:28,567 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 416 transitions. [2022-11-25 17:16:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-25 17:16:28,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:28,570 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:28,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:16:28,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash 325524442, now seen corresponding path program 1 times [2022-11-25 17:16:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:28,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776608028] [2022-11-25 17:16:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:28,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:28,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:16:28,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841719643] [2022-11-25 17:16:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:28,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:28,887 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:28,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:16:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:29,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:16:29,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-25 17:16:29,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:29,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:29,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776608028] [2022-11-25 17:16:29,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:16:29,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841719643] [2022-11-25 17:16:29,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841719643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:29,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:29,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:16:29,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745601794] [2022-11-25 17:16:29,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:29,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:16:29,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:16:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:16:29,755 INFO L87 Difference]: Start difference. First operand 336 states and 416 transitions. Second operand has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-25 17:16:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:29,952 INFO L93 Difference]: Finished difference Result 595 states and 760 transitions. [2022-11-25 17:16:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:16:29,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 193 [2022-11-25 17:16:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:29,955 INFO L225 Difference]: With dead ends: 595 [2022-11-25 17:16:29,955 INFO L226 Difference]: Without dead ends: 351 [2022-11-25 17:16:29,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:16:29,957 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:29,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1513 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:16:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-25 17:16:29,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 347. [2022-11-25 17:16:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 229 states have (on average 1.1834061135371179) internal successors, (271), 235 states have internal predecessors, (271), 72 states have call successors, (72), 39 states have call predecessors, (72), 45 states have return successors, (88), 72 states have call predecessors, (88), 71 states have call successors, (88) [2022-11-25 17:16:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 431 transitions. [2022-11-25 17:16:29,989 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 431 transitions. Word has length 193 [2022-11-25 17:16:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:29,989 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 431 transitions. [2022-11-25 17:16:29,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 7 states have internal predecessors, (105), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-25 17:16:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 431 transitions. [2022-11-25 17:16:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-25 17:16:29,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:29,992 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:30,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:30,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:30,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash 326204579, now seen corresponding path program 1 times [2022-11-25 17:16:30,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:30,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881193528] [2022-11-25 17:16:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:30,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:30,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:16:30,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769320835] [2022-11-25 17:16:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:30,318 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:30,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:16:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:31,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:16:31,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-25 17:16:31,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:31,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881193528] [2022-11-25 17:16:31,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:16:31,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769320835] [2022-11-25 17:16:31,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769320835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:31,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:31,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:16:31,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317578849] [2022-11-25 17:16:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:16:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:16:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:16:31,066 INFO L87 Difference]: Start difference. First operand 347 states and 431 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-25 17:16:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:31,111 INFO L93 Difference]: Finished difference Result 584 states and 746 transitions. [2022-11-25 17:16:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:16:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 207 [2022-11-25 17:16:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:31,115 INFO L225 Difference]: With dead ends: 584 [2022-11-25 17:16:31,115 INFO L226 Difference]: Without dead ends: 330 [2022-11-25 17:16:31,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:16:31,117 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 2 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:31,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 611 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:16:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-25 17:16:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2022-11-25 17:16:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 218 states have (on average 1.1743119266055047) internal successors, (256), 222 states have internal predecessors, (256), 68 states have call successors, (68), 37 states have call predecessors, (68), 42 states have return successors, (82), 69 states have call predecessors, (82), 67 states have call successors, (82) [2022-11-25 17:16:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 406 transitions. [2022-11-25 17:16:31,145 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 406 transitions. Word has length 207 [2022-11-25 17:16:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:31,146 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 406 transitions. [2022-11-25 17:16:31,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-25 17:16:31,146 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 406 transitions. [2022-11-25 17:16:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-25 17:16:31,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:31,148 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:31,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:31,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:31,358 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:31,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash -161127906, now seen corresponding path program 1 times [2022-11-25 17:16:31,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:31,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235821582] [2022-11-25 17:16:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:31,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:31,452 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:16:31,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688653446] [2022-11-25 17:16:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:31,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:31,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:31,454 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:31,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 17:16:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:32,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:16:32,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-25 17:16:32,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:32,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:32,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235821582] [2022-11-25 17:16:32,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:16:32,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688653446] [2022-11-25 17:16:32,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688653446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:32,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:32,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:16:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548509147] [2022-11-25 17:16:32,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:32,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:16:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:16:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:16:32,326 INFO L87 Difference]: Start difference. First operand 329 states and 406 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-25 17:16:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:32,520 INFO L93 Difference]: Finished difference Result 473 states and 592 transitions. [2022-11-25 17:16:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:16:32,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 206 [2022-11-25 17:16:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:32,524 INFO L225 Difference]: With dead ends: 473 [2022-11-25 17:16:32,524 INFO L226 Difference]: Without dead ends: 341 [2022-11-25 17:16:32,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:16:32,526 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 3 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:32,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1334 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:16:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-25 17:16:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 327. [2022-11-25 17:16:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 216 states have (on average 1.1574074074074074) internal successors, (250), 221 states have internal predecessors, (250), 68 states have call successors, (68), 37 states have call predecessors, (68), 42 states have return successors, (83), 68 states have call predecessors, (83), 67 states have call successors, (83) [2022-11-25 17:16:32,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 401 transitions. [2022-11-25 17:16:32,562 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 401 transitions. Word has length 206 [2022-11-25 17:16:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:32,563 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 401 transitions. [2022-11-25 17:16:32,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-25 17:16:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 401 transitions. [2022-11-25 17:16:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-25 17:16:32,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:32,565 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:32,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:32,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:16:32,777 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1909848278, now seen corresponding path program 1 times [2022-11-25 17:16:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:32,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903103443] [2022-11-25 17:16:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:32,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:16:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:16:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:16:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 17:16:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:16:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:16:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:16:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:16:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:16:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 17:16:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 17:16:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:16:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:16:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 17:16:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 17:16:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:16:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 17:16:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-25 17:16:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:16:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:16:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-25 17:16:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:37,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-25 17:16:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:38,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:16:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 17:16:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-11-25 17:16:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:38,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903103443] [2022-11-25 17:16:38,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903103443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:38,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407356518] [2022-11-25 17:16:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:38,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:38,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:38,635 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:38,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 17:16:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:39,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 17:16:39,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 24 proven. 170 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-25 17:16:39,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-25 17:16:40,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407356518] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:40,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:16:40,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [25, 12] total 40 [2022-11-25 17:16:40,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378573306] [2022-11-25 17:16:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:40,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:16:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:16:40,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 17:16:40,596 INFO L87 Difference]: Start difference. First operand 327 states and 401 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 17:16:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:40,794 INFO L93 Difference]: Finished difference Result 412 states and 517 transitions. [2022-11-25 17:16:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:16:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 222 [2022-11-25 17:16:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:40,796 INFO L225 Difference]: With dead ends: 412 [2022-11-25 17:16:40,797 INFO L226 Difference]: Without dead ends: 322 [2022-11-25 17:16:40,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 17:16:40,798 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:40,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1521 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:16:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-25 17:16:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2022-11-25 17:16:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 212 states have (on average 1.150943396226415) internal successors, (244), 216 states have internal predecessors, (244), 68 states have call successors, (68), 37 states have call predecessors, (68), 41 states have return successors, (80), 68 states have call predecessors, (80), 67 states have call successors, (80) [2022-11-25 17:16:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 392 transitions. [2022-11-25 17:16:40,847 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 392 transitions. Word has length 222 [2022-11-25 17:16:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:40,848 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 392 transitions. [2022-11-25 17:16:40,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-25 17:16:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 392 transitions. [2022-11-25 17:16:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-25 17:16:40,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:40,850 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:40,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:41,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:41,062 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:41,062 INFO L85 PathProgramCache]: Analyzing trace with hash -696080334, now seen corresponding path program 1 times [2022-11-25 17:16:41,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:41,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126136426] [2022-11-25 17:16:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:41,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:42,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:16:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:16:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:16:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 17:16:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:16:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:16:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:16:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:16:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:16:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 17:16:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 17:16:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:16:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:16:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 17:16:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 17:16:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:16:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 17:16:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-25 17:16:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:16:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:16:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-25 17:16:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-25 17:16:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:16:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:16:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 17:16:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-25 17:16:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:43,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126136426] [2022-11-25 17:16:43,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126136426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:43,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528356121] [2022-11-25 17:16:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:43,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:43,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:43,619 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:43,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 17:16:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:44,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:16:44,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-25 17:16:44,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:44,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528356121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:44,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:16:44,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-11-25 17:16:44,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848181467] [2022-11-25 17:16:44,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:44,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:16:44,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:16:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:16:44,692 INFO L87 Difference]: Start difference. First operand 322 states and 392 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-25 17:16:45,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:45,169 INFO L93 Difference]: Finished difference Result 603 states and 733 transitions. [2022-11-25 17:16:45,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:16:45,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 233 [2022-11-25 17:16:45,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:45,172 INFO L225 Difference]: With dead ends: 603 [2022-11-25 17:16:45,172 INFO L226 Difference]: Without dead ends: 326 [2022-11-25 17:16:45,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:16:45,174 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 160 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:45,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 622 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:16:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-25 17:16:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2022-11-25 17:16:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 213 states have (on average 1.1408450704225352) internal successors, (243), 218 states have internal predecessors, (243), 68 states have call successors, (68), 37 states have call predecessors, (68), 42 states have return successors, (81), 68 states have call predecessors, (81), 67 states have call successors, (81) [2022-11-25 17:16:45,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 392 transitions. [2022-11-25 17:16:45,207 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 392 transitions. Word has length 233 [2022-11-25 17:16:45,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:45,207 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 392 transitions. [2022-11-25 17:16:45,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-25 17:16:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 392 transitions. [2022-11-25 17:16:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-25 17:16:45,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:45,210 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:45,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:45,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:16:45,422 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:45,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1673886379, now seen corresponding path program 1 times [2022-11-25 17:16:45,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:45,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012046480] [2022-11-25 17:16:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:45,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:45,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:16:45,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025029203] [2022-11-25 17:16:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:45,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:45,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:45,505 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:45,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 17:16:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:46,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:16:46,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 192 proven. 11 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-25 17:16:46,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-25 17:16:46,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:46,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012046480] [2022-11-25 17:16:46,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:16:46,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025029203] [2022-11-25 17:16:46,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025029203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:16:46,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:16:46,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-25 17:16:46,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535700888] [2022-11-25 17:16:46,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:16:46,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:16:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:16:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:16:46,934 INFO L87 Difference]: Start difference. First operand 324 states and 392 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2022-11-25 17:16:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:47,198 INFO L93 Difference]: Finished difference Result 491 states and 604 transitions. [2022-11-25 17:16:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:16:47,199 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) Word has length 239 [2022-11-25 17:16:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:47,201 INFO L225 Difference]: With dead ends: 491 [2022-11-25 17:16:47,201 INFO L226 Difference]: Without dead ends: 326 [2022-11-25 17:16:47,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 464 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:16:47,203 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 4 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:47,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2054 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:16:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-25 17:16:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 320. [2022-11-25 17:16:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 210 states have (on average 1.1285714285714286) internal successors, (237), 215 states have internal predecessors, (237), 68 states have call successors, (68), 37 states have call predecessors, (68), 41 states have return successors, (80), 67 states have call predecessors, (80), 67 states have call successors, (80) [2022-11-25 17:16:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 385 transitions. [2022-11-25 17:16:47,230 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 385 transitions. Word has length 239 [2022-11-25 17:16:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:47,231 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 385 transitions. [2022-11-25 17:16:47,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 5 states have call successors, (42), 3 states have call predecessors, (42), 6 states have return successors, (41), 5 states have call predecessors, (41), 5 states have call successors, (41) [2022-11-25 17:16:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 385 transitions. [2022-11-25 17:16:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-25 17:16:47,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:47,233 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:47,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:47,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 17:16:47,446 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1453240668, now seen corresponding path program 1 times [2022-11-25 17:16:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:47,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193832935] [2022-11-25 17:16:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:47,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:16:47,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124141836] [2022-11-25 17:16:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:47,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:47,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:47,544 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:47,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 17:16:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:48,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 17:16:48,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:48,551 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 18 treesize of output 19 [2022-11-25 17:16:48,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-25 17:16:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-25 17:16:48,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:16:48,783 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 70 treesize of output 64 [2022-11-25 17:16:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-11-25 17:16:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:49,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193832935] [2022-11-25 17:16:49,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:16:49,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124141836] [2022-11-25 17:16:49,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124141836] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:49,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:16:49,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 14 [2022-11-25 17:16:49,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515070161] [2022-11-25 17:16:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:49,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:16:49,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:16:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:16:49,049 INFO L87 Difference]: Start difference. First operand 320 states and 385 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-25 17:16:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:49,556 INFO L93 Difference]: Finished difference Result 339 states and 411 transitions. [2022-11-25 17:16:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:16:49,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 245 [2022-11-25 17:16:49,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:49,559 INFO L225 Difference]: With dead ends: 339 [2022-11-25 17:16:49,559 INFO L226 Difference]: Without dead ends: 337 [2022-11-25 17:16:49,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:16:49,560 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 19 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:49,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1268 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:16:49,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-25 17:16:49,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 329. [2022-11-25 17:16:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 216 states have (on average 1.1296296296296295) internal successors, (244), 222 states have internal predecessors, (244), 69 states have call successors, (69), 38 states have call predecessors, (69), 43 states have return successors, (83), 68 states have call predecessors, (83), 68 states have call successors, (83) [2022-11-25 17:16:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 396 transitions. [2022-11-25 17:16:49,586 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 396 transitions. Word has length 245 [2022-11-25 17:16:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:49,587 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 396 transitions. [2022-11-25 17:16:49,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-25 17:16:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 396 transitions. [2022-11-25 17:16:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-25 17:16:49,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:49,590 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:16:49,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 17:16:49,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:16:49,802 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:49,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:49,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1646844524, now seen corresponding path program 1 times [2022-11-25 17:16:49,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:49,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56681433] [2022-11-25 17:16:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:49,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:49,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:16:49,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928911830] [2022-11-25 17:16:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:49,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:49,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:49,887 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:49,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-25 17:16:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:50,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-25 17:16:50,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:51,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:51,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:51,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:51,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:51,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2022-11-25 17:16:51,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:51,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:51,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:16:51,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2022-11-25 17:16:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-25 17:16:51,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:51,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56681433] [2022-11-25 17:16:51,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:16:51,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928911830] [2022-11-25 17:16:51,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928911830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:51,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:16:51,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 17:16:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882543928] [2022-11-25 17:16:51,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 17:16:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 17:16:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:16:51,480 INFO L87 Difference]: Start difference. First operand 329 states and 396 transitions. Second operand has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-25 17:16:53,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:16:55,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:16:57,896 WARN L539 Checker$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] [2022-11-25 17:16:59,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:17:02,031 WARN L539 Checker$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] [2022-11-25 17:17:04,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:17:06,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:17:08,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:17:10,191 WARN L539 Checker$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] [2022-11-25 17:17:12,265 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] [2022-11-25 17:17:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:13,657 INFO L93 Difference]: Finished difference Result 474 states and 572 transitions. [2022-11-25 17:17:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 17:17:13,658 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) Word has length 247 [2022-11-25 17:17:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:13,660 INFO L225 Difference]: With dead ends: 474 [2022-11-25 17:17:13,660 INFO L226 Difference]: Without dead ends: 380 [2022-11-25 17:17:13,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 234 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-25 17:17:13,662 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 208 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 58 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:13,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 2100 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 744 Invalid, 10 Unknown, 0 Unchecked, 21.8s Time] [2022-11-25 17:17:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-25 17:17:13,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 372. [2022-11-25 17:17:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 250 states have (on average 1.128) internal successors, (282), 256 states have internal predecessors, (282), 71 states have call successors, (71), 45 states have call predecessors, (71), 50 states have return successors, (84), 70 states have call predecessors, (84), 70 states have call successors, (84) [2022-11-25 17:17:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 437 transitions. [2022-11-25 17:17:13,699 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 437 transitions. Word has length 247 [2022-11-25 17:17:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:13,700 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 437 transitions. [2022-11-25 17:17:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 8 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-25 17:17:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 437 transitions. [2022-11-25 17:17:13,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-25 17:17:13,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:13,703 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:13,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:13,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 17:17:13,914 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:13,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1635988153, now seen corresponding path program 1 times [2022-11-25 17:17:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:13,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929308303] [2022-11-25 17:17:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:13,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:13,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:17:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237780790] [2022-11-25 17:17:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:13,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:13,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:13,990 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:14,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-25 17:17:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:17:14,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-25 17:17:14,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:17:14,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:14,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929308303] [2022-11-25 17:17:14,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:17:14,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237780790] [2022-11-25 17:17:14,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237780790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:14,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:14,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:17:14,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760961897] [2022-11-25 17:17:14,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:14,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:17:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:17:14,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:17:14,976 INFO L87 Difference]: Start difference. First operand 372 states and 437 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-25 17:17:15,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:15,039 INFO L93 Difference]: Finished difference Result 657 states and 767 transitions. [2022-11-25 17:17:15,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:17:15,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) Word has length 268 [2022-11-25 17:17:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:15,042 INFO L225 Difference]: With dead ends: 657 [2022-11-25 17:17:15,042 INFO L226 Difference]: Without dead ends: 293 [2022-11-25 17:17:15,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:17:15,044 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:15,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1220 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:17:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-25 17:17:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 282. [2022-11-25 17:17:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 193 states have (on average 1.1398963730569949) internal successors, (220), 197 states have internal predecessors, (220), 51 states have call successors, (51), 33 states have call predecessors, (51), 37 states have return successors, (56), 51 states have call predecessors, (56), 50 states have call successors, (56) [2022-11-25 17:17:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 327 transitions. [2022-11-25 17:17:15,070 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 327 transitions. Word has length 268 [2022-11-25 17:17:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:15,070 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 327 transitions. [2022-11-25 17:17:15,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 4 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-25 17:17:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 327 transitions. [2022-11-25 17:17:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-25 17:17:15,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:15,073 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:17:15,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:15,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:15,291 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1153589007, now seen corresponding path program 1 times [2022-11-25 17:17:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:15,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849485204] [2022-11-25 17:17:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:15,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:15,362 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:17:15,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967311971] [2022-11-25 17:17:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:15,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:15,364 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:15,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 17:17:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 173 conjunts are in the unsatisfiable core [2022-11-25 17:17:16,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:16,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:17:16,689 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-11-25 17:17:16,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 26 [2022-11-25 17:17:16,699 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 [2022-11-25 17:17:17,183 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-25 17:17:17,184 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 24 treesize of output 30 [2022-11-25 17:17:17,355 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4015 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4015) |c_#memory_$Pointer$.base|)) is different from true [2022-11-25 17:17:19,480 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4016 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4016))) is different from true [2022-11-25 17:17:21,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:17:21,612 INFO L321 Elim1Store]: treesize reduction 41, result has 34.9 percent of original size [2022-11-25 17:17:21,612 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 49 [2022-11-25 17:17:21,625 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 17:17:21,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-25 17:17:23,696 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_iter_next_harness_~#iter~2#1.base_BEFORE_CALL_30| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_iter_next_harness_~#iter~2#1.base_BEFORE_CALL_30|) 0) |v_ULTIMATE.start_aws_hash_iter_next_harness_~#iter~2#1.base_BEFORE_CALL_30|))) is different from true [2022-11-25 17:17:25,832 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_aws_hash_iter_next_~iter.base_BEFORE_CALL_13 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_hash_iter_next_~iter.base_BEFORE_CALL_13) 0) v_aws_hash_iter_next_~iter.base_BEFORE_CALL_13))) is different from true [2022-11-25 17:17:27,948 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_aws_hash_iter_next_~iter.base_BEFORE_CALL_14 Int)) (not (= v_aws_hash_iter_next_~iter.base_BEFORE_CALL_14 (select (select |c_#memory_$Pointer$.base| v_aws_hash_iter_next_~iter.base_BEFORE_CALL_14) 0)))) is different from true [2022-11-25 17:17:30,078 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_20 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_20) 0) v_s_get_next_element_~iter.base_BEFORE_CALL_20))) is different from true [2022-11-25 17:17:32,193 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_21 Int)) (not (= v_s_get_next_element_~iter.base_BEFORE_CALL_21 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_21) 0)))) is different from true [2022-11-25 17:18:24,829 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_22 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_22) 0))) (and (not (= (select (select |c_#memory_$Pointer$.base| .cse0) (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_22) 0)) 0)) (not (= .cse0 v_s_get_next_element_~iter.base_BEFORE_CALL_22))))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_22 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_22) 0))) (and (not (= (select (select |c_#memory_$Pointer$.offset| .cse1) (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_22) 0)) 0)) (not (= .cse1 v_s_get_next_element_~iter.base_BEFORE_CALL_22)))))) is different from true [2022-11-25 17:18:25,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 75 [2022-11-25 17:18:25,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:18:25,158 INFO L321 Elim1Store]: treesize reduction 271, result has 3.9 percent of original size [2022-11-25 17:18:25,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 86 [2022-11-25 17:18:27,184 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_23 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_23) 0))) (and (not (= .cse0 v_s_get_next_element_~iter.base_BEFORE_CALL_23)) (not (= (select (select |c_#memory_$Pointer$.offset| .cse0) (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_23) 0)) 0))))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_23 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_23) 0))) (and (not (= (select (select |c_#memory_$Pointer$.base| .cse1) (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_23) 0)) 0)) (not (= .cse1 v_s_get_next_element_~iter.base_BEFORE_CALL_23)))))) is different from true [2022-11-25 17:18:37,364 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:18:44,683 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:18:53,009 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:18:59,250 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:19:07,594 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:19:15,846 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:19:22,125 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:19:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 152 proven. 49 refuted. 0 times theorem prover too weak. 30 trivial. 147 not checked. [2022-11-25 17:19:22,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:19:40,921 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:19:53,394 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:20:06,971 WARN L233 SmtUtils]: Spent 10.13s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:20:17,201 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:20:20,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:20,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849485204] [2022-11-25 17:20:20,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:20:20,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967311971] [2022-11-25 17:20:20,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967311971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:20,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:20:20,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2022-11-25 17:20:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656804329] [2022-11-25 17:20:20,014 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:20,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-25 17:20:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-25 17:20:20,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2000, Unknown=46, NotChecked=882, Total=3080 [2022-11-25 17:20:20,017 INFO L87 Difference]: Start difference. First operand 282 states and 327 transitions. Second operand has 47 states, 41 states have (on average 3.951219512195122) internal successors, (162), 41 states have internal predecessors, (162), 22 states have call successors, (42), 15 states have call predecessors, (42), 17 states have return successors, (39), 20 states have call predecessors, (39), 21 states have call successors, (39) [2022-11-25 17:20:23,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:20:33,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:20:36,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:20:43,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:20:49,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:20:51,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:20:53,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:20:55,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:20:57,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:20:59,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:01,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:07,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:10,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:12,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:14,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:16,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:18,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:20,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:22,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:24,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:26,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:28,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:30,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:32,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:34,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:36,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:38,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:39,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:41,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:43,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:45,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:49,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:51,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:21:53,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:03,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:05,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:07,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:09,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:12,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:15,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:17,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:20,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:24,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:26,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:28,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:32,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:36,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:38,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:41,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:43,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:51,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:53,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:57,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:22:59,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:01,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:03,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:05,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:08,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:10,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:12,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:14,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:16,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:18,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:20,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:23,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:25,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:27,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:29,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:32,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:43,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:54,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:23:56,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:24:02,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:24:04,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:24:06,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:24:08,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:24:35,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:24:46,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:24:57,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:25:00,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:25:02,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:25:04,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:25:06,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:26:21,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:26:23,486 WARN L539 Checker$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] [2022-11-25 17:27:15,836 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:28:00,074 WARN L233 SmtUtils]: Spent 12.54s on a formula simplification. DAG size of input: 54 DAG size of output: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:28:06,972 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 64 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:28:08,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:28:24,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:28:35,410 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:28:45,692 WARN L233 SmtUtils]: Spent 9.83s on a formula simplification. DAG size of input: 59 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:29:04,136 WARN L233 SmtUtils]: Spent 10.27s 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) [2022-11-25 17:29:08,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:29:10,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:29:13,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:29:15,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:29:17,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:29:19,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:29:21,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:29:23,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:29:25,436 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] [2022-11-25 17:29:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:25,680 INFO L93 Difference]: Finished difference Result 490 states and 578 transitions. [2022-11-25 17:29:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-25 17:29:25,681 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 41 states have (on average 3.951219512195122) internal successors, (162), 41 states have internal predecessors, (162), 22 states have call successors, (42), 15 states have call predecessors, (42), 17 states have return successors, (39), 20 states have call predecessors, (39), 21 states have call successors, (39) Word has length 256 [2022-11-25 17:29:25,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:25,684 INFO L225 Difference]: With dead ends: 490 [2022-11-25 17:29:25,684 INFO L226 Difference]: Without dead ends: 400 [2022-11-25 17:29:25,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 219 SyntacticMatches, 23 SemanticMatches, 104 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2682 ImplicationChecksByTransitivity, 516.1s TimeCoverageRelationStatistics Valid=674, Invalid=8556, Unknown=118, NotChecked=1782, Total=11130 [2022-11-25 17:29:25,688 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 416 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 5963 mSolverCounterSat, 254 mSolverCounterUnsat, 112 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 9402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 5963 IncrementalHoareTripleChecker+Invalid, 112 IncrementalHoareTripleChecker+Unknown, 3073 IncrementalHoareTripleChecker+Unchecked, 210.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:25,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1243 Invalid, 9402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [254 Valid, 5963 Invalid, 112 Unknown, 3073 Unchecked, 210.9s Time] [2022-11-25 17:29:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-25 17:29:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 385. [2022-11-25 17:29:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 263 states have (on average 1.129277566539924) internal successors, (297), 269 states have internal predecessors, (297), 70 states have call successors, (70), 45 states have call predecessors, (70), 51 states have return successors, (80), 70 states have call predecessors, (80), 69 states have call successors, (80) [2022-11-25 17:29:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2022-11-25 17:29:25,729 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 256 [2022-11-25 17:29:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:25,730 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2022-11-25 17:29:25,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 41 states have (on average 3.951219512195122) internal successors, (162), 41 states have internal predecessors, (162), 22 states have call successors, (42), 15 states have call predecessors, (42), 17 states have return successors, (39), 20 states have call predecessors, (39), 21 states have call successors, (39) [2022-11-25 17:29:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2022-11-25 17:29:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-25 17:29:25,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:25,733 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:29:25,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:25,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:25,943 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:25,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1740395021, now seen corresponding path program 1 times [2022-11-25 17:29:25,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:25,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130876705] [2022-11-25 17:29:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:25,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:26,053 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:29:26,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304093238] [2022-11-25 17:29:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:26,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:26,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:26,055 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:26,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_903254e1-04af-4e83-af3c-8e6c357eea6c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-25 17:29:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 17:29:27,003 INFO L286 TraceCheckSpWp]: Computing forward predicates...