./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/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_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/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_6e741d11-d042-4826-af29-b920a661e1b5/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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:59:36,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:59:36,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 04:59:36,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:59:36,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:59:36,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:59:36,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:59:36,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:59:36,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:59:36,388 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:59:36,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:59:36,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:59:36,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:59:36,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:59:36,391 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:59:36,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:59:36,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:59:36,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:59:36,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:59:36,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:59:36,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:59:36,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:59:36,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:59:36,396 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:59:36,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:59:36,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:59:36,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:59:36,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:59:36,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:59:36,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:59:36,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:59:36,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:59:36,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:59:36,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:59:36,400 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:59:36,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:59:36,400 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:59:36,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:59:36,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:59:36,401 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_6e741d11-d042-4826-af29-b920a661e1b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2023-11-29 04:59:36,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:59:36,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:59:36,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:59:36,666 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:59:36,666 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:59:36,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2023-11-29 04:59:39,418 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:59:39,803 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:59:39,804 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2023-11-29 04:59:39,830 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/data/c42b0b6bd/7a29f132b15c45fd8ff3692c97efaced/FLAG7eceb10d5 [2023-11-29 04:59:39,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/data/c42b0b6bd/7a29f132b15c45fd8ff3692c97efaced [2023-11-29 04:59:39,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:59:39,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:59:39,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:59:39,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:59:39,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:59:39,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:59:39" (1/1) ... [2023-11-29 04:59:39,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dba9061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:39, skipping insertion in model container [2023-11-29 04:59:39,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:59:39" (1/1) ... [2023-11-29 04:59:39,952 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:59:40,168 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_6e741d11-d042-4826-af29-b920a661e1b5/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2023-11-29 04:59:40,176 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_6e741d11-d042-4826-af29-b920a661e1b5/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2023-11-29 04:59:41,015 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,016 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,018 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,028 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,029 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,030 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,031 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,391 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 04:59:41,393 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 04:59:41,394 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 04:59:41,395 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 04:59:41,397 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 04:59:41,398 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 04:59:41,399 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 04:59:41,399 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 04:59:41,400 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 04:59:41,401 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 04:59:41,528 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,528 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:59:41,609 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:59:41,623 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_6e741d11-d042-4826-af29-b920a661e1b5/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2023-11-29 04:59:41,623 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_6e741d11-d042-4826-af29-b920a661e1b5/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2023-11-29 04:59:41,672 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,674 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,681 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,682 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,683 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,684 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,718 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 04:59:41,719 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 04:59:41,720 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 04:59:41,721 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 04:59:41,722 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 04:59:41,722 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 04:59:41,723 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 04:59:41,723 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 04:59:41,724 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 04:59:41,724 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 04:59:41,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 04:59:41,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-11-29 04:59:41,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:59:42,059 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,059 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,059 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,059 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,059 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,059 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,059 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,060 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,060 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,060 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,060 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,060 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,060 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,060 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,061 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:59:42,068 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:59:42,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42 WrapperNode [2023-11-29 04:59:42,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:59:42,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:59:42,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:59:42,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:59:42,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,208 INFO L138 Inliner]: procedures = 688, calls = 1518, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 740 [2023-11-29 04:59:42,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:59:42,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:59:42,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:59:42,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:59:42,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,304 INFO L175 MemorySlicer]: Split 288 memory accesses to 6 slices as follows [35, 2, 236, 7, 5, 3]. 82 percent of accesses are in the largest equivalence class. The 247 initializations are split as follows [0, 2, 236, 1, 5, 3]. The 7 writes are split as follows [6, 0, 0, 1, 0, 0]. [2023-11-29 04:59:42,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:59:42,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:59:42,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:59:42,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:59:42,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (1/1) ... [2023-11-29 04:59:42,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:59:42,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:42,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:59:42,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:59:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-29 04:59:42,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-29 04:59:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:59:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-29 04:59:42,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-29 04:59:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 04:59:42,431 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 04:59:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-29 04:59:42,431 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-29 04:59:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:59:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:59:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:59:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:59:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 04:59:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 04:59:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-29 04:59:42,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-29 04:59:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 04:59:42,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 04:59:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:59:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:59:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:59:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:59:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:59:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 04:59:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 04:59:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 04:59:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:59:42,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:59:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 04:59:42,433 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 04:59:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-29 04:59:42,433 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-29 04:59:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-29 04:59:42,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-29 04:59:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-29 04:59:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-29 04:59:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-29 04:59:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-29 04:59:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:59:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:59:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:59:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:59:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:59:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 04:59:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-29 04:59:42,436 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-29 04:59:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-29 04:59:42,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-29 04:59:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:59:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:59:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:59:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:59:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 04:59:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 04:59:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-29 04:59:42,437 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-29 04:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-29 04:59:42,437 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-29 04:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 04:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 04:59:42,708 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:59:42,711 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:59:43,464 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:59:43,561 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:59:43,561 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 04:59:43,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:59:43 BoogieIcfgContainer [2023-11-29 04:59:43,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:59:43,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:59:43,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:59:43,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:59:43,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:59:39" (1/3) ... [2023-11-29 04:59:43,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286d148e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:59:43, skipping insertion in model container [2023-11-29 04:59:43,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:59:42" (2/3) ... [2023-11-29 04:59:43,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286d148e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:59:43, skipping insertion in model container [2023-11-29 04:59:43,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:59:43" (3/3) ... [2023-11-29 04:59:43,570 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2023-11-29 04:59:43,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:59:43,585 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:59:43,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:59:43,636 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;@25087734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:59:43,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:59:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 114 states have internal predecessors, (148), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-29 04:59:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 04:59:43,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:43,653 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:43,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:43,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:43,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1151027879, now seen corresponding path program 1 times [2023-11-29 04:59:43,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783611661] [2023-11-29 04:59:43,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:43,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783611661] [2023-11-29 04:59:44,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:59:44,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64538045] [2023-11-29 04:59:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:44,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:44,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:44,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:59:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:44,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:59:44,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 04:59:44,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:44,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64538045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:44,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:44,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:59:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100691496] [2023-11-29 04:59:44,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:44,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:59:44,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:44,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:59:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:59:44,724 INFO L87 Difference]: Start difference. First operand has 186 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 114 states have internal predecessors, (148), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 04:59:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:44,920 INFO L93 Difference]: Finished difference Result 364 states and 548 transitions. [2023-11-29 04:59:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:59:44,922 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2023-11-29 04:59:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:44,933 INFO L225 Difference]: With dead ends: 364 [2023-11-29 04:59:44,933 INFO L226 Difference]: Without dead ends: 182 [2023-11-29 04:59:44,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 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 04:59:44,942 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:44,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:59:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-29 04:59:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-29 04:59:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 109 states have (on average 1.2568807339449541) internal successors, (137), 111 states have internal predecessors, (137), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 04:59:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2023-11-29 04:59:45,022 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 103 [2023-11-29 04:59:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:45,023 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2023-11-29 04:59:45,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 04:59:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2023-11-29 04:59:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 04:59:45,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:45,027 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:45,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:59:45,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:45,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:45,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2118296214, now seen corresponding path program 1 times [2023-11-29 04:59:45,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:45,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809189875] [2023-11-29 04:59:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:45,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:45,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:59:45,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674538276] [2023-11-29 04:59:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:45,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:45,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:45,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:45,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:59:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:45,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:59:45,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-29 04:59:45,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:45,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809189875] [2023-11-29 04:59:45,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:59:45,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674538276] [2023-11-29 04:59:45,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674538276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:45,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:45,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:59:45,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332620765] [2023-11-29 04:59:45,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:45,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:59:45,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:45,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:59:45,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:59:45,958 INFO L87 Difference]: Start difference. First operand 182 states and 247 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 04:59:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:46,428 INFO L93 Difference]: Finished difference Result 279 states and 381 transitions. [2023-11-29 04:59:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:59:46,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 133 [2023-11-29 04:59:46,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:46,434 INFO L225 Difference]: With dead ends: 279 [2023-11-29 04:59:46,435 INFO L226 Difference]: Without dead ends: 186 [2023-11-29 04:59:46,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:59:46,437 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 1 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:46,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 910 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:59:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-29 04:59:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-29 04:59:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 112 states have (on average 1.25) internal successors, (140), 114 states have internal predecessors, (140), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2023-11-29 04:59:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 253 transitions. [2023-11-29 04:59:46,462 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 253 transitions. Word has length 133 [2023-11-29 04:59:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:46,463 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 253 transitions. [2023-11-29 04:59:46,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 04:59:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 253 transitions. [2023-11-29 04:59:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 04:59:46,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:46,467 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:46,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:59:46,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:46,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:46,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash -950664499, now seen corresponding path program 1 times [2023-11-29 04:59:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:46,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551098334] [2023-11-29 04:59:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:46,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:46,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:59:46,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141067097] [2023-11-29 04:59:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:46,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:46,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:46,776 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:46,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:59:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:47,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 2364 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:59:47,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-29 04:59:47,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:59:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-29 04:59:47,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551098334] [2023-11-29 04:59:47,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:59:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141067097] [2023-11-29 04:59:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141067097] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:47,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:59:47,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-11-29 04:59:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889950860] [2023-11-29 04:59:47,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:47,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:59:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:59:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:59:47,679 INFO L87 Difference]: Start difference. First operand 186 states and 253 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 04:59:48,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:48,063 INFO L93 Difference]: Finished difference Result 194 states and 261 transitions. [2023-11-29 04:59:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:59:48,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 133 [2023-11-29 04:59:48,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:48,067 INFO L225 Difference]: With dead ends: 194 [2023-11-29 04:59:48,067 INFO L226 Difference]: Without dead ends: 192 [2023-11-29 04:59:48,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:48,069 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 4 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:48,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 899 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:59:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-29 04:59:48,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2023-11-29 04:59:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 115 states have (on average 1.2434782608695651) internal successors, (143), 118 states have internal predecessors, (143), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 04:59:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 258 transitions. [2023-11-29 04:59:48,089 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 258 transitions. Word has length 133 [2023-11-29 04:59:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:48,091 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 258 transitions. [2023-11-29 04:59:48,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-29 04:59:48,091 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 258 transitions. [2023-11-29 04:59:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 04:59:48,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:48,094 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:48,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 04:59:48,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:48,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:48,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash -948817457, now seen corresponding path program 1 times [2023-11-29 04:59:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:48,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148991865] [2023-11-29 04:59:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:48,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:48,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:59:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77631891] [2023-11-29 04:59:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:48,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:48,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:48,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:48,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:59:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:48,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:59:48,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-29 04:59:48,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:48,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:48,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148991865] [2023-11-29 04:59:48,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:59:48,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77631891] [2023-11-29 04:59:48,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77631891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:48,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:48,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:59:48,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241758907] [2023-11-29 04:59:48,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:48,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:59:48,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:48,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:59:48,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:59:48,949 INFO L87 Difference]: Start difference. First operand 191 states and 258 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 04:59:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:49,276 INFO L93 Difference]: Finished difference Result 366 states and 488 transitions. [2023-11-29 04:59:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:59:49,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 133 [2023-11-29 04:59:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:49,280 INFO L225 Difference]: With dead ends: 366 [2023-11-29 04:59:49,280 INFO L226 Difference]: Without dead ends: 191 [2023-11-29 04:59:49,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:59:49,282 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 9 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:49,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1112 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:59:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-29 04:59:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-11-29 04:59:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 118 states have internal predecessors, (142), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 04:59:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 257 transitions. [2023-11-29 04:59:49,304 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 257 transitions. Word has length 133 [2023-11-29 04:59:49,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:49,304 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 257 transitions. [2023-11-29 04:59:49,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 04:59:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 257 transitions. [2023-11-29 04:59:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 04:59:49,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:49,307 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:49,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:59:49,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:49,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:49,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:49,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1339026719, now seen corresponding path program 1 times [2023-11-29 04:59:49,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:49,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109561733] [2023-11-29 04:59:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:49,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:59:49,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856455248] [2023-11-29 04:59:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:49,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:49,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:49,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:49,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:59:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:50,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:59:50,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-29 04:59:50,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:59:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109561733] [2023-11-29 04:59:50,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:59:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856455248] [2023-11-29 04:59:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856455248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:59:50,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:59:50,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:59:50,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674014119] [2023-11-29 04:59:50,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:59:50,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:59:50,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:50,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:59:50,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:59:50,157 INFO L87 Difference]: Start difference. First operand 191 states and 257 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-29 04:59:50,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:50,391 INFO L93 Difference]: Finished difference Result 363 states and 486 transitions. [2023-11-29 04:59:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:59:50,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 137 [2023-11-29 04:59:50,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:50,394 INFO L225 Difference]: With dead ends: 363 [2023-11-29 04:59:50,394 INFO L226 Difference]: Without dead ends: 192 [2023-11-29 04:59:50,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 04:59:50,395 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:50,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:59:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-29 04:59:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-11-29 04:59:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 116 states have (on average 1.2327586206896552) internal successors, (143), 119 states have internal predecessors, (143), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 04:59:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 258 transitions. [2023-11-29 04:59:50,412 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 258 transitions. Word has length 137 [2023-11-29 04:59:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:50,413 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 258 transitions. [2023-11-29 04:59:50,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-29 04:59:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 258 transitions. [2023-11-29 04:59:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 04:59:50,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:50,414 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:50,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:59:50,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:50,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:50,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:50,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1336656897, now seen corresponding path program 1 times [2023-11-29 04:59:50,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:50,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423649911] [2023-11-29 04:59:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:50,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:50,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:59:50,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171436405] [2023-11-29 04:59:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:50,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:50,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:50,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:50,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:59:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:59:51,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:59:51,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-29 04:59:51,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:59:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-29 04:59:51,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:51,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423649911] [2023-11-29 04:59:51,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:59:51,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171436405] [2023-11-29 04:59:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171436405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:59:51,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:59:51,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 04:59:51,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928331483] [2023-11-29 04:59:51,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:59:51,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:59:51,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:59:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:59:51,687 INFO L87 Difference]: Start difference. First operand 192 states and 258 transitions. Second operand has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 04:59:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:52,474 INFO L93 Difference]: Finished difference Result 370 states and 491 transitions. [2023-11-29 04:59:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:59:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 139 [2023-11-29 04:59:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:52,476 INFO L225 Difference]: With dead ends: 370 [2023-11-29 04:59:52,477 INFO L226 Difference]: Without dead ends: 193 [2023-11-29 04:59:52,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 265 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 04:59:52,478 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 11 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:52,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1553 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:59:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-29 04:59:52,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-29 04:59:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 117 states have (on average 1.2307692307692308) internal successors, (144), 120 states have internal predecessors, (144), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 04:59:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 259 transitions. [2023-11-29 04:59:52,494 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 259 transitions. Word has length 139 [2023-11-29 04:59:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:52,494 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 259 transitions. [2023-11-29 04:59:52,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 13 states have internal predecessors, (71), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 04:59:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 259 transitions. [2023-11-29 04:59:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 04:59:52,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:52,497 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:52,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:59:52,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 04:59:52,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:52,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2021376545, now seen corresponding path program 2 times [2023-11-29 04:59:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750017474] [2023-11-29 04:59:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:52,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:59:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978349918] [2023-11-29 04:59:52,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:59:52,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:52,773 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:52,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:59:53,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:59:53,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:59:53,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 2461 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:59:53,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 158 proven. 3 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-29 04:59:53,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:59:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-11-29 04:59:53,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:59:53,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750017474] [2023-11-29 04:59:53,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:59:53,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978349918] [2023-11-29 04:59:53,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978349918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:59:53,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:59:53,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 04:59:53,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948271160] [2023-11-29 04:59:53,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:59:53,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:59:53,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:59:53,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:59:53,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:59:53,901 INFO L87 Difference]: Start difference. First operand 193 states and 259 transitions. Second operand has 15 states, 13 states have (on average 5.615384615384615) internal successors, (73), 15 states have internal predecessors, (73), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 04:59:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:54,964 INFO L93 Difference]: Finished difference Result 372 states and 493 transitions. [2023-11-29 04:59:54,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:59:54,965 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.615384615384615) internal successors, (73), 15 states have internal predecessors, (73), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 141 [2023-11-29 04:59:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:54,967 INFO L225 Difference]: With dead ends: 372 [2023-11-29 04:59:54,967 INFO L226 Difference]: Without dead ends: 194 [2023-11-29 04:59:54,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:59:54,969 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 11 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:54,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1996 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:59:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-29 04:59:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-11-29 04:59:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 118 states have (on average 1.228813559322034) internal successors, (145), 121 states have internal predecessors, (145), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 04:59:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 260 transitions. [2023-11-29 04:59:54,983 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 260 transitions. Word has length 141 [2023-11-29 04:59:54,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:54,984 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 260 transitions. [2023-11-29 04:59:54,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.615384615384615) internal successors, (73), 15 states have internal predecessors, (73), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 04:59:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 260 transitions. [2023-11-29 04:59:54,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 04:59:54,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:54,986 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:54,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:59:55,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 04:59:55,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:59:55,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1665876801, now seen corresponding path program 3 times [2023-11-29 04:59:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:59:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454023281] [2023-11-29 04:59:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:59:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:59:55,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:59:55,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201872616] [2023-11-29 04:59:55,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:59:55,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:59:55,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:59:55,259 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:59:55,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:59:56,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 04:59:56,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:59:56,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 04:59:56,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:56,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:59:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-29 04:59:56,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:59:57,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:59:57,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 57 [2023-11-29 04:59:57,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-11-29 04:59:57,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:59:57,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 73 [2023-11-29 04:59:57,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:59:57,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2023-11-29 04:59:58,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:59:58,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 129 [2023-11-29 04:59:58,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 04:59:58,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 04:59:58,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 04:59:58,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 04:59:59,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-29 04:59:59,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 04:59:59,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-29 04:59:59,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-29 05:00:00,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 05:00:00,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-29 05:00:00,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-29 05:00:00,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-29 05:00:00,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-29 05:00:00,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 05:00:00,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-11-29 05:00:00,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-11-29 05:00:00,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2023-11-29 05:00:00,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:00:00,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:00:00,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2023-11-29 05:00:00,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 05:00:00,418 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:00:00,421 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 05:00:00,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 05:00:00,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 05:00:00,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 05:00:00,513 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:00:00,516 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 05:00:00,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:00:00,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:00:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-11-29 05:00:01,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:01,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454023281] [2023-11-29 05:00:01,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:00:01,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201872616] [2023-11-29 05:00:01,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201872616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:00:01,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:00:01,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 22 [2023-11-29 05:00:01,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806999178] [2023-11-29 05:00:01,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:00:01,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:00:01,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:00:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:00:01,352 INFO L87 Difference]: Start difference. First operand 194 states and 260 transitions. Second operand has 22 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 7 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2023-11-29 05:00:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:03,846 INFO L93 Difference]: Finished difference Result 375 states and 496 transitions. [2023-11-29 05:00:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:00:03,846 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 7 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 143 [2023-11-29 05:00:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:03,848 INFO L225 Difference]: With dead ends: 375 [2023-11-29 05:00:03,848 INFO L226 Difference]: Without dead ends: 196 [2023-11-29 05:00:03,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-11-29 05:00:03,849 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 20 mSDsluCounter, 3039 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:03,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3264 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 05:00:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-29 05:00:03,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2023-11-29 05:00:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 119 states have (on average 1.226890756302521) internal successors, (146), 122 states have internal predecessors, (146), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:00:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 261 transitions. [2023-11-29 05:00:03,862 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 261 transitions. Word has length 143 [2023-11-29 05:00:03,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:03,863 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 261 transitions. [2023-11-29 05:00:03,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 7 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2023-11-29 05:00:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 261 transitions. [2023-11-29 05:00:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 05:00:03,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:03,865 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:03,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:00:04,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 05:00:04,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:04,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:04,068 INFO L85 PathProgramCache]: Analyzing trace with hash 485895839, now seen corresponding path program 4 times [2023-11-29 05:00:04,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:04,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124741188] [2023-11-29 05:00:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:04,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:04,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:00:04,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816992494] [2023-11-29 05:00:04,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:00:04,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:04,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:00:04,149 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:00:04,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:00:05,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:00:05,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:00:05,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 05:00:05,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:00:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 174 proven. 10 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 05:00:05,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:00:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-29 05:00:05,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:05,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124741188] [2023-11-29 05:00:05,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:00:05,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816992494] [2023-11-29 05:00:05,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816992494] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:00:05,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:00:05,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-29 05:00:05,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436018853] [2023-11-29 05:00:05,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:00:05,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:00:05,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:05,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:00:05,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:00:05,673 INFO L87 Difference]: Start difference. First operand 195 states and 261 transitions. Second operand has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:00:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:07,559 INFO L93 Difference]: Finished difference Result 376 states and 497 transitions. [2023-11-29 05:00:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:00:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 145 [2023-11-29 05:00:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:07,562 INFO L225 Difference]: With dead ends: 376 [2023-11-29 05:00:07,562 INFO L226 Difference]: Without dead ends: 196 [2023-11-29 05:00:07,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:00:07,563 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 11 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:07,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3103 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 05:00:07,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-29 05:00:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-11-29 05:00:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 120 states have (on average 1.225) internal successors, (147), 123 states have internal predecessors, (147), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:00:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 262 transitions. [2023-11-29 05:00:07,576 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 262 transitions. Word has length 145 [2023-11-29 05:00:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:07,576 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 262 transitions. [2023-11-29 05:00:07,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:00:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 262 transitions. [2023-11-29 05:00:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 05:00:07,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:07,579 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:07,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:00:07,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:07,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:07,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1142087039, now seen corresponding path program 5 times [2023-11-29 05:00:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:07,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078716159] [2023-11-29 05:00:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:07,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:07,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:00:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935963637] [2023-11-29 05:00:07,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:00:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:00:07,860 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:00:07,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:00:08,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-29 05:00:08,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:00:08,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 05:00:08,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:00:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 185 proven. 15 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-29 05:00:08,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:00:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-11-29 05:00:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:09,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078716159] [2023-11-29 05:00:09,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:00:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935963637] [2023-11-29 05:00:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935963637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:00:09,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:00:09,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-11-29 05:00:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046279916] [2023-11-29 05:00:09,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:00:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:00:09,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:00:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:00:09,246 INFO L87 Difference]: Start difference. First operand 196 states and 262 transitions. Second operand has 21 states, 19 states have (on average 4.157894736842105) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:00:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:10,854 INFO L93 Difference]: Finished difference Result 378 states and 499 transitions. [2023-11-29 05:00:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:00:10,855 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.157894736842105) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 147 [2023-11-29 05:00:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:10,856 INFO L225 Difference]: With dead ends: 378 [2023-11-29 05:00:10,856 INFO L226 Difference]: Without dead ends: 197 [2023-11-29 05:00:10,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:00:10,858 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 17 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:10,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2436 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 05:00:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-29 05:00:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-11-29 05:00:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 121 states have (on average 1.2231404958677685) internal successors, (148), 124 states have internal predecessors, (148), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:00:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 263 transitions. [2023-11-29 05:00:10,870 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 263 transitions. Word has length 147 [2023-11-29 05:00:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:10,871 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 263 transitions. [2023-11-29 05:00:10,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.157894736842105) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:00:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 263 transitions. [2023-11-29 05:00:10,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 05:00:10,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:10,873 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:10,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:00:11,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:00:11,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:11,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1823096993, now seen corresponding path program 6 times [2023-11-29 05:00:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715331254] [2023-11-29 05:00:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:11,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:00:11,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422853608] [2023-11-29 05:00:11,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:00:11,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:11,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:00:11,157 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:00:11,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:00:20,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-11-29 05:00:20,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:00:20,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 05:00:20,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:00:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 68 proven. 21 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-29 05:00:20,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:00:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-11-29 05:00:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715331254] [2023-11-29 05:00:21,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:00:21,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422853608] [2023-11-29 05:00:21,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422853608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:00:21,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:00:21,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-29 05:00:21,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670415557] [2023-11-29 05:00:21,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:00:21,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 05:00:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:21,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 05:00:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:00:21,430 INFO L87 Difference]: Start difference. First operand 197 states and 263 transitions. Second operand has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 23 states have internal predecessors, (70), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 05:00:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:24,753 INFO L93 Difference]: Finished difference Result 380 states and 501 transitions. [2023-11-29 05:00:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:00:24,754 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 23 states have internal predecessors, (70), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 149 [2023-11-29 05:00:24,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:24,756 INFO L225 Difference]: With dead ends: 380 [2023-11-29 05:00:24,756 INFO L226 Difference]: Without dead ends: 198 [2023-11-29 05:00:24,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 05:00:24,757 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 23 mSDsluCounter, 3540 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:24,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3765 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 05:00:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-29 05:00:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-11-29 05:00:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 122 states have (on average 1.221311475409836) internal successors, (149), 125 states have internal predecessors, (149), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:00:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2023-11-29 05:00:24,766 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 149 [2023-11-29 05:00:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:24,766 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2023-11-29 05:00:24,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 23 states have internal predecessors, (70), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 05:00:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2023-11-29 05:00:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 05:00:24,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:24,768 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:24,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:00:24,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:24,969 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:24,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:24,969 INFO L85 PathProgramCache]: Analyzing trace with hash 866033215, now seen corresponding path program 7 times [2023-11-29 05:00:24,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:24,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635810660] [2023-11-29 05:00:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:25,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:00:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41740413] [2023-11-29 05:00:25,049 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:00:25,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:00:25,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:00:25,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:00:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:26,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 05:00:26,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:00:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 213 proven. 28 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-29 05:00:26,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:00:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-29 05:00:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635810660] [2023-11-29 05:00:27,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:00:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41740413] [2023-11-29 05:00:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41740413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:00:27,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:00:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-11-29 05:00:27,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829531841] [2023-11-29 05:00:27,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:00:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:00:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:00:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:00:27,142 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 25 states, 23 states have (on average 3.608695652173913) internal successors, (83), 25 states have internal predecessors, (83), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:00:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:28,845 INFO L93 Difference]: Finished difference Result 382 states and 503 transitions. [2023-11-29 05:00:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:00:28,845 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.608695652173913) internal successors, (83), 25 states have internal predecessors, (83), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 151 [2023-11-29 05:00:28,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:28,847 INFO L225 Difference]: With dead ends: 382 [2023-11-29 05:00:28,847 INFO L226 Difference]: Without dead ends: 199 [2023-11-29 05:00:28,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:00:28,849 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 16 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:28,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2436 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 05:00:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-29 05:00:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-11-29 05:00:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 123 states have (on average 1.2195121951219512) internal successors, (150), 126 states have internal predecessors, (150), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:00:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 265 transitions. [2023-11-29 05:00:28,882 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 265 transitions. Word has length 151 [2023-11-29 05:00:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:28,882 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 265 transitions. [2023-11-29 05:00:28,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.608695652173913) internal successors, (83), 25 states have internal predecessors, (83), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:00:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 265 transitions. [2023-11-29 05:00:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 05:00:28,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:28,885 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:28,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:00:29,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:00:29,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:29,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1781338081, now seen corresponding path program 8 times [2023-11-29 05:00:29,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:29,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329577722] [2023-11-29 05:00:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:29,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:00:29,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037684314] [2023-11-29 05:00:29,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:00:29,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:00:29,172 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:00:29,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:00:30,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:00:30,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:00:30,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 05:00:30,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:00:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 230 proven. 36 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-29 05:00:30,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:00:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-11-29 05:00:31,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:31,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329577722] [2023-11-29 05:00:31,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:00:31,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037684314] [2023-11-29 05:00:31,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037684314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:00:31,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:00:31,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2023-11-29 05:00:31,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642784956] [2023-11-29 05:00:31,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:00:31,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 05:00:31,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 05:00:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:00:31,573 INFO L87 Difference]: Start difference. First operand 199 states and 265 transitions. Second operand has 27 states, 25 states have (on average 3.4) internal successors, (85), 27 states have internal predecessors, (85), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:00:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:34,119 INFO L93 Difference]: Finished difference Result 384 states and 505 transitions. [2023-11-29 05:00:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:00:34,120 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.4) internal successors, (85), 27 states have internal predecessors, (85), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 153 [2023-11-29 05:00:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:34,121 INFO L225 Difference]: With dead ends: 384 [2023-11-29 05:00:34,121 INFO L226 Difference]: Without dead ends: 200 [2023-11-29 05:00:34,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:00:34,123 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 10 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:34,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3985 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 05:00:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-29 05:00:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-11-29 05:00:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 124 states have (on average 1.217741935483871) internal successors, (151), 127 states have internal predecessors, (151), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:00:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 266 transitions. [2023-11-29 05:00:34,132 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 266 transitions. Word has length 153 [2023-11-29 05:00:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:34,133 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 266 transitions. [2023-11-29 05:00:34,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.4) internal successors, (85), 27 states have internal predecessors, (85), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:00:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 266 transitions. [2023-11-29 05:00:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-29 05:00:34,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:34,134 INFO L195 NwaCegarLoop]: trace histogram [18, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:34,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:00:34,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:00:34,335 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:00:34,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1601700097, now seen corresponding path program 9 times [2023-11-29 05:00:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:34,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640314499] [2023-11-29 05:00:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:34,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:00:34,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698101583] [2023-11-29 05:00:34,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:00:34,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:00:34,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:00:34,414 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:00:34,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:01:08,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-29 05:01:08,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:01:08,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 05:01:08,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 119 proven. 45 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-29 05:01:09,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:01:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 108 proven. 45 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-11-29 05:01:10,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640314499] [2023-11-29 05:01:10,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:01:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698101583] [2023-11-29 05:01:10,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698101583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:01:10,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:01:10,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-11-29 05:01:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953178287] [2023-11-29 05:01:10,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:01:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 05:01:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 05:01:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2023-11-29 05:01:10,110 INFO L87 Difference]: Start difference. First operand 200 states and 266 transitions. Second operand has 29 states, 27 states have (on average 2.814814814814815) internal successors, (76), 29 states have internal predecessors, (76), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 05:01:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:15,525 INFO L93 Difference]: Finished difference Result 386 states and 507 transitions. [2023-11-29 05:01:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:01:15,526 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.814814814814815) internal successors, (76), 29 states have internal predecessors, (76), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 155 [2023-11-29 05:01:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:15,527 INFO L225 Difference]: With dead ends: 386 [2023-11-29 05:01:15,528 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 05:01:15,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 05:01:15,529 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 27 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:15,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3762 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 05:01:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 05:01:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-11-29 05:01:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.216) internal successors, (152), 128 states have internal predecessors, (152), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:01:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 267 transitions. [2023-11-29 05:01:15,539 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 267 transitions. Word has length 155 [2023-11-29 05:01:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:15,539 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 267 transitions. [2023-11-29 05:01:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.814814814814815) internal successors, (76), 29 states have internal predecessors, (76), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 05:01:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 267 transitions. [2023-11-29 05:01:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 05:01:15,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:15,540 INFO L195 NwaCegarLoop]: trace histogram [20, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:15,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 05:01:15,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:01:15,741 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:15,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -140656417, now seen corresponding path program 10 times [2023-11-29 05:01:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:15,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602133569] [2023-11-29 05:01:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:15,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:15,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:01:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906096546] [2023-11-29 05:01:15,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:01:15,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:15,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:15,816 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:15,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:01:17,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:01:17,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:01:17,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:01:17,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 140 proven. 55 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-11-29 05:01:17,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:01:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 129 proven. 55 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-11-29 05:01:18,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:18,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602133569] [2023-11-29 05:01:18,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:01:18,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906096546] [2023-11-29 05:01:18,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906096546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:01:18,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:01:18,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2023-11-29 05:01:18,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928753040] [2023-11-29 05:01:18,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:01:18,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 05:01:18,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:18,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 05:01:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2023-11-29 05:01:18,183 INFO L87 Difference]: Start difference. First operand 201 states and 267 transitions. Second operand has 31 states, 29 states have (on average 2.689655172413793) internal successors, (78), 31 states have internal predecessors, (78), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 05:01:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:19,894 INFO L93 Difference]: Finished difference Result 388 states and 509 transitions. [2023-11-29 05:01:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:01:19,895 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.689655172413793) internal successors, (78), 31 states have internal predecessors, (78), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 157 [2023-11-29 05:01:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:19,897 INFO L225 Difference]: With dead ends: 388 [2023-11-29 05:01:19,897 INFO L226 Difference]: Without dead ends: 202 [2023-11-29 05:01:19,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 05:01:19,899 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 11 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:19,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3762 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 05:01:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-29 05:01:19,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2023-11-29 05:01:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 129 states have internal predecessors, (153), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:01:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 268 transitions. [2023-11-29 05:01:19,912 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 268 transitions. Word has length 157 [2023-11-29 05:01:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:19,912 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 268 transitions. [2023-11-29 05:01:19,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.689655172413793) internal successors, (78), 31 states have internal predecessors, (78), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 05:01:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 268 transitions. [2023-11-29 05:01:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 05:01:19,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:19,914 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:19,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:01:20,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:01:20,116 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:20,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1744764863, now seen corresponding path program 11 times [2023-11-29 05:01:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:20,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538969749] [2023-11-29 05:01:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:20,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:01:20,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292245311] [2023-11-29 05:01:20,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:01:20,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:20,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:20,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:20,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:14:07,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-29 05:14:07,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:14:07,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 05:14:07,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 293 proven. 66 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-29 05:14:07,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-11-29 05:14:08,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538969749] [2023-11-29 05:14:08,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292245311] [2023-11-29 05:14:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292245311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:14:08,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:14:08,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-11-29 05:14:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701842209] [2023-11-29 05:14:08,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:14:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 05:14:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 05:14:08,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:14:08,439 INFO L87 Difference]: Start difference. First operand 202 states and 268 transitions. Second operand has 33 states, 31 states have (on average 2.935483870967742) internal successors, (91), 33 states have internal predecessors, (91), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:14:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:10,869 INFO L93 Difference]: Finished difference Result 390 states and 511 transitions. [2023-11-29 05:14:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:14:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.935483870967742) internal successors, (91), 33 states have internal predecessors, (91), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 159 [2023-11-29 05:14:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:10,871 INFO L225 Difference]: With dead ends: 390 [2023-11-29 05:14:10,871 INFO L226 Difference]: Without dead ends: 203 [2023-11-29 05:14:10,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 05:14:10,873 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 16 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:10,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3763 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 05:14:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-29 05:14:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-11-29 05:14:10,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 130 states have internal predecessors, (154), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-29 05:14:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 269 transitions. [2023-11-29 05:14:10,882 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 269 transitions. Word has length 159 [2023-11-29 05:14:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:10,882 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 269 transitions. [2023-11-29 05:14:10,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.935483870967742) internal successors, (91), 33 states have internal predecessors, (91), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-29 05:14:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 269 transitions. [2023-11-29 05:14:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 05:14:10,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:10,883 INFO L195 NwaCegarLoop]: trace histogram [24, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:10,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 05:14:11,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:14:11,084 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:11,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1276759649, now seen corresponding path program 12 times [2023-11-29 05:14:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:11,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888365278] [2023-11-29 05:14:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:11,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:11,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:11,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018382376] [2023-11-29 05:14:11,170 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:14:11,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:11,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:11,171 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:11,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e741d11-d042-4826-af29-b920a661e1b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process