./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 188eb157187c65ed20c0598818206541e0c8a29005d59be8891bc5ebe4132fce --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:14:36,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:14:36,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 00:14:36,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:14:36,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:14:36,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:14:36,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:14:36,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:14:36,312 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:14:36,313 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:14:36,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:14:36,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:14:36,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:14:36,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:14:36,316 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:14:36,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:14:36,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:14:36,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:14:36,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:14:36,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:14:36,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:14:36,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:14:36,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:14:36,322 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:14:36,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:14:36,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:14:36,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:14:36,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:14:36,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:14:36,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:14:36,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:14:36,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:14:36,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:14:36,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:14:36,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:14:36,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:14:36,328 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:14:36,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:14:36,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:14:36,328 INFO L153 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_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 188eb157187c65ed20c0598818206541e0c8a29005d59be8891bc5ebe4132fce [2023-11-29 00:14:36,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:14:36,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:14:36,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:14:36,595 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:14:36,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:14:36,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2023-11-29 00:14:39,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:14:40,147 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:14:40,148 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2023-11-29 00:14:40,180 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/data/968aa522b/684d61871c5a4be2ba0a49caf5eb8aa1/FLAG2f9eade6d [2023-11-29 00:14:40,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/data/968aa522b/684d61871c5a4be2ba0a49caf5eb8aa1 [2023-11-29 00:14:40,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:14:40,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:14:40,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:14:40,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:14:40,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:14:40,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:40" (1/1) ... [2023-11-29 00:14:40,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585836d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:40, skipping insertion in model container [2023-11-29 00:14:40,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:40" (1/1) ... [2023-11-29 00:14:40,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:14:40,581 WARN L240 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_04a1aea9-c468-404a-9f64-825a1278065b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2023-11-29 00:14:40,589 WARN L240 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_04a1aea9-c468-404a-9f64-825a1278065b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2023-11-29 00:14:41,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:41,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:41,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:41,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:41,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:41,620 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:41,621 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:41,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:41,625 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,115 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 00:14:42,116 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 00:14:42,118 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 00:14:42,120 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 00:14:42,122 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 00:14:42,123 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 00:14:42,124 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 00:14:42,125 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 00:14:42,126 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 00:14:42,126 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 00:14:42,317 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,317 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:14:42,423 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:14:42,438 WARN L240 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_04a1aea9-c468-404a-9f64-825a1278065b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2023-11-29 00:14:42,439 WARN L240 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_04a1aea9-c468-404a-9f64-825a1278065b/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2023-11-29 00:14:42,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,502 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,511 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,513 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,513 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,562 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 00:14:42,563 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 00:14:42,564 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 00:14:42,566 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 00:14:42,567 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 00:14:42,568 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 00:14:42,569 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 00:14:42,596 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 00:14:42,597 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 00:14:42,597 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 00:14:42,663 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 00:14:42,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2023-11-29 00:14:42,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:14:42,856 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,857 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,857 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,857 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,857 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,857 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,857 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,858 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,858 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,858 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,858 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,858 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,858 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,858 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,858 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:14:42,866 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:14:42,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42 WrapperNode [2023-11-29 00:14:42,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:14:42,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:14:42,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:14:42,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:14:42,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:42,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,029 INFO L138 Inliner]: procedures = 688, calls = 1531, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 682 [2023-11-29 00:14:43,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:14:43,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:14:43,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:14:43,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:14:43,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,139 INFO L175 MemorySlicer]: Split 295 memory accesses to 6 slices as follows [2, 5, 236, 47, 2, 3]. 80 percent of accesses are in the largest equivalence class. The 259 initializations are split as follows [2, 5, 236, 13, 0, 3]. The 7 writes are split as follows [0, 0, 0, 7, 0, 0]. [2023-11-29 00:14:43,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:14:43,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:14:43,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:14:43,214 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:14:43,215 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (1/1) ... [2023-11-29 00:14:43,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:14:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:43,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:14:43,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:14:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-29 00:14:43,287 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-29 00:14:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:14:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-29 00:14:43,288 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-29 00:14:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:14:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:14:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:14:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:14:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:14:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 00:14:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-29 00:14:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-29 00:14:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 00:14:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 00:14:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:14:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:14:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:14:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 00:14:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 00:14:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 00:14:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 00:14:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 00:14:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:14:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:14:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 00:14:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 00:14:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-29 00:14:43,292 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-29 00:14:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-29 00:14:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-29 00:14:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-29 00:14:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-29 00:14:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:14:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:14:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:14:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:14:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 00:14:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 00:14:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 00:14:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 00:14:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 00:14:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 00:14:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 00:14:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 00:14:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 00:14:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 00:14:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 00:14:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-29 00:14:43,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-29 00:14:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-29 00:14:43,296 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-29 00:14:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:14:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:14:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:14:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:14:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:14:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 00:14:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-29 00:14:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-29 00:14:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-29 00:14:43,298 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-29 00:14:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:14:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:14:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:14:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:14:43,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:14:43,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 00:14:43,632 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:14:43,634 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:14:44,615 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:14:44,725 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:14:44,726 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 00:14:44,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:44 BoogieIcfgContainer [2023-11-29 00:14:44,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:14:44,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:14:44,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:14:44,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:14:44,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:14:40" (1/3) ... [2023-11-29 00:14:44,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648b9d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:14:44, skipping insertion in model container [2023-11-29 00:14:44,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:42" (2/3) ... [2023-11-29 00:14:44,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648b9d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:14:44, skipping insertion in model container [2023-11-29 00:14:44,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:44" (3/3) ... [2023-11-29 00:14:44,736 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness_negated.i [2023-11-29 00:14:44,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:14:44,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:14:44,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:14:44,815 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=LoopHeads, 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;@130be272, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:14:44,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:14:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 00:14:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 00:14:44,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:44,840 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 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] [2023-11-29 00:14:44,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:44,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1218725307, now seen corresponding path program 1 times [2023-11-29 00:14:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:44,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126043763] [2023-11-29 00:14:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126043763] [2023-11-29 00:14:45,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:14:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886920886] [2023-11-29 00:14:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:45,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:45,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:45,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:45,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:14:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:46,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:14:46,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-29 00:14:46,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:46,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886920886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:46,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:46,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:14:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663367516] [2023-11-29 00:14:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:46,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:14:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:14:46,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:14:46,194 INFO L87 Difference]: Start difference. First operand has 152 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 00:14:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:46,332 INFO L93 Difference]: Finished difference Result 282 states and 417 transitions. [2023-11-29 00:14:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:14:46,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 140 [2023-11-29 00:14:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:46,347 INFO L225 Difference]: With dead ends: 282 [2023-11-29 00:14:46,347 INFO L226 Difference]: Without dead ends: 149 [2023-11-29 00:14:46,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:14:46,357 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:46,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-29 00:14:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-29 00:14:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 00:14:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 199 transitions. [2023-11-29 00:14:46,425 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 199 transitions. Word has length 140 [2023-11-29 00:14:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:46,427 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 199 transitions. [2023-11-29 00:14:46,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-29 00:14:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 199 transitions. [2023-11-29 00:14:46,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-29 00:14:46,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:46,433 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 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] [2023-11-29 00:14:46,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:46,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:46,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:46,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash -110604932, now seen corresponding path program 1 times [2023-11-29 00:14:46,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:46,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524625301] [2023-11-29 00:14:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:46,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:46,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:46,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862725350] [2023-11-29 00:14:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:46,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:46,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:46,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:46,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:14:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:47,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 2414 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:14:47,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-11-29 00:14:47,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:47,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:47,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524625301] [2023-11-29 00:14:47,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:47,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862725350] [2023-11-29 00:14:47,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862725350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:47,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:47,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:14:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894195526] [2023-11-29 00:14:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:47,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:47,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:47,657 INFO L87 Difference]: Start difference. First operand 149 states and 199 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-29 00:14:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:48,286 INFO L93 Difference]: Finished difference Result 237 states and 312 transitions. [2023-11-29 00:14:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:48,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 155 [2023-11-29 00:14:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:48,293 INFO L225 Difference]: With dead ends: 237 [2023-11-29 00:14:48,293 INFO L226 Difference]: Without dead ends: 151 [2023-11-29 00:14:48,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:14:48,297 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 37 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:48,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 871 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:14:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-29 00:14:48,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-29 00:14:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 90 states have internal predecessors, (105), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:14:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2023-11-29 00:14:48,325 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 155 [2023-11-29 00:14:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:48,326 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2023-11-29 00:14:48,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-29 00:14:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2023-11-29 00:14:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 00:14:48,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:48,331 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:48,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:48,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 00:14:48,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:48,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:48,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1719750792, now seen corresponding path program 1 times [2023-11-29 00:14:48,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:48,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288279714] [2023-11-29 00:14:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:48,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:48,649 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:48,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138522527] [2023-11-29 00:14:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:48,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:48,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:48,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:48,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:14:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:49,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 00:14:49,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:49,578 INFO L378 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 15 treesize of output 1 [2023-11-29 00:14:49,722 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$#3.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$#3.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$#3.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$#3.base|)) is different from true [2023-11-29 00:14:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2023-11-29 00:14:58,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:58,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:58,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288279714] [2023-11-29 00:14:58,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:58,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138522527] [2023-11-29 00:14:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138522527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:58,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:58,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 00:14:58,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661048695] [2023-11-29 00:14:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:58,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:14:58,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:58,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:14:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=191, Unknown=13, NotChecked=28, Total=272 [2023-11-29 00:14:58,109 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 17 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 8 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-29 00:15:03,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:08,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:12,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:16,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:20,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:24,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:28,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:32,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:36,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:41,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:45,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:49,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:53,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:15:57,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:01,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:05,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:10,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:14,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:18,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:22,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:26,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:30,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:35,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:39,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:43,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:47,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:51,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:56,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:00,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:04,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:08,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:12,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:16,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:20,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:24,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:29,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:33,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:37,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:41,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:45,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:49,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:54,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:58,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:02,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:06,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:10,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:14,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:26,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:30,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:43,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:47,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:51,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:56,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:00,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:04,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:08,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:12,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:17,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:21,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:25,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:29,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:33,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:37,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:42,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:46,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:50,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:54,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:58,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:02,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:06,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:11,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:15,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:19,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:23,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:27,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:31,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:35,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:40,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:44,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:48,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:52,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:56,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:00,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:04,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:08,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:12,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:16,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:21,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:25,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:29,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:33,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:33,551 INFO L93 Difference]: Finished difference Result 308 states and 427 transitions. [2023-11-29 00:21:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 00:21:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 8 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) Word has length 168 [2023-11-29 00:21:33,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:33,556 INFO L225 Difference]: With dead ends: 308 [2023-11-29 00:21:33,556 INFO L226 Difference]: Without dead ends: 220 [2023-11-29 00:21:33,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=130, Invalid=609, Unknown=21, NotChecked=52, Total=812 [2023-11-29 00:21:33,559 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 124 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 97 mSolverCounterUnsat, 91 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 372.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 91 IncrementalHoareTripleChecker+Unknown, 362 IncrementalHoareTripleChecker+Unchecked, 378.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:33,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 946 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1556 Invalid, 91 Unknown, 362 Unchecked, 378.8s Time] [2023-11-29 00:21:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-29 00:21:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 152. [2023-11-29 00:21:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 91 states have internal predecessors, (106), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:21:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 203 transitions. [2023-11-29 00:21:33,593 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 203 transitions. Word has length 168 [2023-11-29 00:21:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:33,594 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 203 transitions. [2023-11-29 00:21:33,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 8 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-29 00:21:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 203 transitions. [2023-11-29 00:21:33,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-29 00:21:33,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:33,599 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:33,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:21:33,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 00:21:33,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:21:33,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1714219602, now seen corresponding path program 1 times [2023-11-29 00:21:33,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:33,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623117176] [2023-11-29 00:21:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:33,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:21:33,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136753851] [2023-11-29 00:21:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:33,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:33,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:33,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:33,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:21:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:34,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:21:34,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:21:34,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:34,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623117176] [2023-11-29 00:21:34,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:21:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136753851] [2023-11-29 00:21:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136753851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:34,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:34,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:21:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898505258] [2023-11-29 00:21:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:34,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:21:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:21:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:21:34,631 INFO L87 Difference]: Start difference. First operand 152 states and 203 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-29 00:21:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:35,370 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2023-11-29 00:21:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:21:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 170 [2023-11-29 00:21:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:35,373 INFO L225 Difference]: With dead ends: 258 [2023-11-29 00:21:35,373 INFO L226 Difference]: Without dead ends: 152 [2023-11-29 00:21:35,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:21:35,374 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 9 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:35,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 894 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:21:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-29 00:21:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-11-29 00:21:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 91 states have internal predecessors, (105), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:21:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 202 transitions. [2023-11-29 00:21:35,395 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 202 transitions. Word has length 170 [2023-11-29 00:21:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:35,396 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 202 transitions. [2023-11-29 00:21:35,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-29 00:21:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 202 transitions. [2023-11-29 00:21:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-29 00:21:35,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:35,400 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:35,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:21:35,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:35,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:21:35,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash 168655290, now seen corresponding path program 1 times [2023-11-29 00:21:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009051381] [2023-11-29 00:21:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:35,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:21:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807710342] [2023-11-29 00:21:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:35,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:35,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:35,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:35,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:21:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:36,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:21:36,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:21:36,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:36,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:36,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009051381] [2023-11-29 00:21:36,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:21:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807710342] [2023-11-29 00:21:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807710342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:36,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:36,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:21:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787314392] [2023-11-29 00:21:36,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:36,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:36,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:36,391 INFO L87 Difference]: Start difference. First operand 152 states and 202 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 00:21:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:36,745 INFO L93 Difference]: Finished difference Result 260 states and 342 transitions. [2023-11-29 00:21:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:36,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 172 [2023-11-29 00:21:36,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:36,748 INFO L225 Difference]: With dead ends: 260 [2023-11-29 00:21:36,748 INFO L226 Difference]: Without dead ends: 153 [2023-11-29 00:21:36,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:36,750 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:36,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 366 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:21:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-29 00:21:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-29 00:21:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 92 states have internal predecessors, (106), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:21:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 203 transitions. [2023-11-29 00:21:36,768 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 203 transitions. Word has length 172 [2023-11-29 00:21:36,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:36,769 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 203 transitions. [2023-11-29 00:21:36,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 00:21:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 203 transitions. [2023-11-29 00:21:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-29 00:21:36,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:36,773 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:36,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:21:36,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:36,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:21:36,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash -540364565, now seen corresponding path program 1 times [2023-11-29 00:21:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:36,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949993750] [2023-11-29 00:21:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:37,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:21:37,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438510008] [2023-11-29 00:21:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:37,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:37,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:37,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:37,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:21:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:37,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:21:37,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 194 proven. 1 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:21:37,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:21:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 00:21:38,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:38,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949993750] [2023-11-29 00:21:38,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:21:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438510008] [2023-11-29 00:21:38,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438510008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:21:38,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:21:38,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 00:21:38,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870982883] [2023-11-29 00:21:38,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:21:38,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:21:38,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:38,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:21:38,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:21:38,223 INFO L87 Difference]: Start difference. First operand 153 states and 203 transitions. Second operand has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:21:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:39,641 INFO L93 Difference]: Finished difference Result 261 states and 343 transitions. [2023-11-29 00:21:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:21:39,642 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 173 [2023-11-29 00:21:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:39,644 INFO L225 Difference]: With dead ends: 261 [2023-11-29 00:21:39,644 INFO L226 Difference]: Without dead ends: 154 [2023-11-29 00:21:39,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:21:39,646 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 10 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:39,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1780 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 00:21:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-29 00:21:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-29 00:21:39,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 93 states have internal predecessors, (107), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:21:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 204 transitions. [2023-11-29 00:21:39,665 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 204 transitions. Word has length 173 [2023-11-29 00:21:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:39,666 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 204 transitions. [2023-11-29 00:21:39,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:21:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 204 transitions. [2023-11-29 00:21:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-29 00:21:39,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:39,670 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:39,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:21:39,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:39,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:21:39,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:39,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1045143590, now seen corresponding path program 2 times [2023-11-29 00:21:39,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:39,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201308013] [2023-11-29 00:21:39,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:39,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:39,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:21:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026006435] [2023-11-29 00:21:39,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:21:39,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:39,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:39,971 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:39,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:21:41,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:21:41,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:21:41,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:21:41,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 194 proven. 3 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:21:41,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:21:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 00:21:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201308013] [2023-11-29 00:21:42,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:21:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026006435] [2023-11-29 00:21:42,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026006435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:21:42,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:21:42,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 00:21:42,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871965145] [2023-11-29 00:21:42,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:21:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:21:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:21:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:21:42,269 INFO L87 Difference]: Start difference. First operand 154 states and 204 transitions. Second operand has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 15 states have internal predecessors, (76), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:21:43,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:43,207 INFO L93 Difference]: Finished difference Result 262 states and 344 transitions. [2023-11-29 00:21:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:21:43,208 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 15 states have internal predecessors, (76), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 174 [2023-11-29 00:21:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:43,210 INFO L225 Difference]: With dead ends: 262 [2023-11-29 00:21:43,211 INFO L226 Difference]: Without dead ends: 155 [2023-11-29 00:21:43,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:21:43,212 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 11 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:43,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1603 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:21:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-29 00:21:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-29 00:21:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 92 states have (on average 1.173913043478261) internal successors, (108), 94 states have internal predecessors, (108), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:21:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 205 transitions. [2023-11-29 00:21:43,228 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 205 transitions. Word has length 174 [2023-11-29 00:21:43,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:43,228 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 205 transitions. [2023-11-29 00:21:43,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.846153846153846) internal successors, (76), 15 states have internal predecessors, (76), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:21:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 205 transitions. [2023-11-29 00:21:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 00:21:43,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:43,232 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:43,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:21:43,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:43,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:21:43,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash 486575819, now seen corresponding path program 3 times [2023-11-29 00:21:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:43,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896197811] [2023-11-29 00:21:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:43,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:43,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:21:43,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754990656] [2023-11-29 00:21:43,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:21:43,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:43,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:43,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:43,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:21:54,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-29 00:21:54,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:21:54,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:21:54,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 194 proven. 6 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:21:54,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:21:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 00:21:55,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:55,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896197811] [2023-11-29 00:21:55,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:21:55,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754990656] [2023-11-29 00:21:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754990656] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:21:55,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:21:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-29 00:21:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355673791] [2023-11-29 00:21:55,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:21:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:21:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:21:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:21:55,218 INFO L87 Difference]: Start difference. First operand 155 states and 205 transitions. Second operand has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:21:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:56,669 INFO L93 Difference]: Finished difference Result 263 states and 345 transitions. [2023-11-29 00:21:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:21:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 175 [2023-11-29 00:21:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:56,672 INFO L225 Difference]: With dead ends: 263 [2023-11-29 00:21:56,672 INFO L226 Difference]: Without dead ends: 156 [2023-11-29 00:21:56,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:21:56,674 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 12 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:56,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1422 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:21:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-29 00:21:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-11-29 00:21:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 95 states have internal predecessors, (109), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:21:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 206 transitions. [2023-11-29 00:21:56,692 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 206 transitions. Word has length 175 [2023-11-29 00:21:56,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:56,692 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 206 transitions. [2023-11-29 00:21:56,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:21:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 206 transitions. [2023-11-29 00:21:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-29 00:21:56,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:56,695 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:56,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:21:56,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:56,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:21:56,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash 725237242, now seen corresponding path program 4 times [2023-11-29 00:21:56,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:56,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679301290] [2023-11-29 00:21:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:56,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:57,002 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:21:57,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825225607] [2023-11-29 00:21:57,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:21:57,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:57,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:57,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:57,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:21:57,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:21:57,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:21:57,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:21:57,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 194 proven. 10 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:21:58,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:21:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 00:21:58,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679301290] [2023-11-29 00:21:58,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:21:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825225607] [2023-11-29 00:21:58,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825225607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:21:58,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:21:58,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-29 00:21:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089897769] [2023-11-29 00:21:58,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:21:58,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:21:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:21:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:21:58,886 INFO L87 Difference]: Start difference. First operand 156 states and 206 transitions. Second operand has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:22:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:01,327 INFO L93 Difference]: Finished difference Result 264 states and 346 transitions. [2023-11-29 00:22:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:22:01,328 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 176 [2023-11-29 00:22:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:01,330 INFO L225 Difference]: With dead ends: 264 [2023-11-29 00:22:01,330 INFO L226 Difference]: Without dead ends: 157 [2023-11-29 00:22:01,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:22:01,331 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 11 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:01,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2487 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 00:22:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-29 00:22:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-29 00:22:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 96 states have internal predecessors, (110), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:22:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 207 transitions. [2023-11-29 00:22:01,342 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 207 transitions. Word has length 176 [2023-11-29 00:22:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:01,343 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 207 transitions. [2023-11-29 00:22:01,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.705882352941177) internal successors, (80), 19 states have internal predecessors, (80), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:22:01,343 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 207 transitions. [2023-11-29 00:22:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 00:22:01,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:01,345 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:01,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 00:22:01,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 00:22:01,545 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:22:01,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash -466193237, now seen corresponding path program 5 times [2023-11-29 00:22:01,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:22:01,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087199254] [2023-11-29 00:22:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:01,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:22:01,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:22:01,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899959242] [2023-11-29 00:22:01,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:22:01,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:22:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:22:01,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:22:01,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:22:06,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-29 00:22:06,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:22:06,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:22:06,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 194 proven. 15 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:22:06,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 00:22:07,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:22:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087199254] [2023-11-29 00:22:07,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:22:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899959242] [2023-11-29 00:22:07,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899959242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:07,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:07,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-11-29 00:22:07,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8728075] [2023-11-29 00:22:07,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:07,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:22:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:22:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:22:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:22:07,243 INFO L87 Difference]: Start difference. First operand 157 states and 207 transitions. Second operand has 21 states, 19 states have (on average 4.315789473684211) internal successors, (82), 21 states have internal predecessors, (82), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:22:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:09,324 INFO L93 Difference]: Finished difference Result 265 states and 347 transitions. [2023-11-29 00:22:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:22:09,325 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.315789473684211) internal successors, (82), 21 states have internal predecessors, (82), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 177 [2023-11-29 00:22:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:09,326 INFO L225 Difference]: With dead ends: 265 [2023-11-29 00:22:09,327 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 00:22:09,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:22:09,328 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 12 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:09,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1776 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 00:22:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 00:22:09,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-29 00:22:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 95 states have (on average 1.168421052631579) internal successors, (111), 97 states have internal predecessors, (111), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:22:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2023-11-29 00:22:09,339 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 177 [2023-11-29 00:22:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:09,339 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2023-11-29 00:22:09,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.315789473684211) internal successors, (82), 21 states have internal predecessors, (82), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:22:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2023-11-29 00:22:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 00:22:09,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:09,341 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:09,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:22:09,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:22:09,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:22:09,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:09,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1254167578, now seen corresponding path program 6 times [2023-11-29 00:22:09,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:22:09,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944864171] [2023-11-29 00:22:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:09,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:22:09,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:22:09,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484939592] [2023-11-29 00:22:09,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:22:09,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:22:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:22:09,625 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:22:09,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:22:58,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-11-29 00:22:58,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:22:58,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 00:22:58,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 194 proven. 21 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:22:58,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 00:22:59,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:22:59,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944864171] [2023-11-29 00:22:59,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:22:59,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484939592] [2023-11-29 00:22:59,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484939592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:59,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:59,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-29 00:22:59,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589017503] [2023-11-29 00:22:59,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:59,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:22:59,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:22:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:22:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:22:59,415 INFO L87 Difference]: Start difference. First operand 158 states and 208 transitions. Second operand has 23 states, 21 states have (on average 4.0) internal successors, (84), 23 states have internal predecessors, (84), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:23:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:01,741 INFO L93 Difference]: Finished difference Result 266 states and 348 transitions. [2023-11-29 00:23:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:23:01,742 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.0) internal successors, (84), 23 states have internal predecessors, (84), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 178 [2023-11-29 00:23:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:01,744 INFO L225 Difference]: With dead ends: 266 [2023-11-29 00:23:01,744 INFO L226 Difference]: Without dead ends: 159 [2023-11-29 00:23:01,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:23:01,746 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 11 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:01,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2311 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 00:23:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-29 00:23:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-29 00:23:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 98 states have internal predecessors, (112), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:23:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 209 transitions. [2023-11-29 00:23:01,762 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 209 transitions. Word has length 178 [2023-11-29 00:23:01,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:01,763 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 209 transitions. [2023-11-29 00:23:01,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.0) internal successors, (84), 23 states have internal predecessors, (84), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:23:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 209 transitions. [2023-11-29 00:23:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 00:23:01,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:01,765 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:01,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:23:01,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 00:23:01,966 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:01,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1249222005, now seen corresponding path program 7 times [2023-11-29 00:23:01,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:01,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754548540] [2023-11-29 00:23:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:01,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:02,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:23:02,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739414294] [2023-11-29 00:23:02,071 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:23:02,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:23:02,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:23:02,073 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:23:02,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:23:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:03,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 00:23:03,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:23:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 194 proven. 28 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:23:03,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:23:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 00:23:04,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:04,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754548540] [2023-11-29 00:23:04,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:23:04,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739414294] [2023-11-29 00:23:04,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739414294] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:23:04,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:23:04,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-11-29 00:23:04,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648399510] [2023-11-29 00:23:04,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:23:04,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 00:23:04,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:04,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 00:23:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:23:04,377 INFO L87 Difference]: Start difference. First operand 159 states and 209 transitions. Second operand has 25 states, 23 states have (on average 3.739130434782609) internal successors, (86), 25 states have internal predecessors, (86), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:23:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:07,143 INFO L93 Difference]: Finished difference Result 267 states and 349 transitions. [2023-11-29 00:23:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:23:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.739130434782609) internal successors, (86), 25 states have internal predecessors, (86), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 179 [2023-11-29 00:23:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:07,146 INFO L225 Difference]: With dead ends: 267 [2023-11-29 00:23:07,146 INFO L226 Difference]: Without dead ends: 160 [2023-11-29 00:23:07,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:23:07,148 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 11 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:07,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2665 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 00:23:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-29 00:23:07,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-29 00:23:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 99 states have internal predecessors, (113), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:23:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 210 transitions. [2023-11-29 00:23:07,164 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 210 transitions. Word has length 179 [2023-11-29 00:23:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:07,165 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 210 transitions. [2023-11-29 00:23:07,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.739130434782609) internal successors, (86), 25 states have internal predecessors, (86), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:23:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 210 transitions. [2023-11-29 00:23:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-29 00:23:07,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:07,168 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:07,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:23:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 00:23:07,370 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:07,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1544887750, now seen corresponding path program 8 times [2023-11-29 00:23:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654805905] [2023-11-29 00:23:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:07,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:23:07,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439751639] [2023-11-29 00:23:07,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:23:07,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:23:07,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:23:07,480 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:23:07,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:23:09,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:23:09,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:23:09,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 00:23:09,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:23:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 194 proven. 36 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 00:23:09,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:23:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 00:23:10,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:10,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654805905] [2023-11-29 00:23:10,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:23:10,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439751639] [2023-11-29 00:23:10,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439751639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:23:10,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:23:10,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2023-11-29 00:23:10,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521117352] [2023-11-29 00:23:10,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:23:10,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 00:23:10,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 00:23:10,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:23:10,410 INFO L87 Difference]: Start difference. First operand 160 states and 210 transitions. Second operand has 27 states, 25 states have (on average 3.52) internal successors, (88), 27 states have internal predecessors, (88), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:23:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:13,552 INFO L93 Difference]: Finished difference Result 268 states and 350 transitions. [2023-11-29 00:23:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:23:13,553 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.52) internal successors, (88), 27 states have internal predecessors, (88), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 180 [2023-11-29 00:23:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:13,555 INFO L225 Difference]: With dead ends: 268 [2023-11-29 00:23:13,555 INFO L226 Difference]: Without dead ends: 161 [2023-11-29 00:23:13,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2023-11-29 00:23:13,556 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 17 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:13,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2484 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 00:23:13,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-29 00:23:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-29 00:23:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 98 states have (on average 1.163265306122449) internal successors, (114), 100 states have internal predecessors, (114), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:23:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 211 transitions. [2023-11-29 00:23:13,567 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 211 transitions. Word has length 180 [2023-11-29 00:23:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:13,567 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 211 transitions. [2023-11-29 00:23:13,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.52) internal successors, (88), 27 states have internal predecessors, (88), 6 states have call successors, (43), 2 states have call predecessors, (43), 5 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-29 00:23:13,568 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 211 transitions. [2023-11-29 00:23:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-29 00:23:13,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:13,569 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:13,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:23:13,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:23:13,770 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:13,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2120591253, now seen corresponding path program 9 times [2023-11-29 00:23:13,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:13,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425141477] [2023-11-29 00:23:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:13,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:23:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258119264] [2023-11-29 00:23:13,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:23:13,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:23:13,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:23:13,858 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:23:13,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04a1aea9-c468-404a-9f64-825a1278065b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process