./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme --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 de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:57,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:57,195 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:48:57,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:57,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:57,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:57,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:57,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:57,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:57,264 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:57,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:57,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:57,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:57,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:57,270 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:57,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:57,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:48:57,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:57,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:57,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:48:57,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:57,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:48:57,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:48:57,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:57,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:57,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:57,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:57,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:57,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:57,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:57,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:57,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:48:57,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:57,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:57,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:57,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:57,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:48:57,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:57,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:57,281 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_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 [2023-11-26 11:48:57,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:57,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:57,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:57,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:57,601 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:57,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2023-11-26 11:49:00,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:01,309 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:01,310 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2023-11-26 11:49:01,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/data/0f0715747/789ab838437143e0a8e1446301abd2c9/FLAG9cb15bcd5 [2023-11-26 11:49:01,376 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/data/0f0715747/789ab838437143e0a8e1446301abd2c9 [2023-11-26 11:49:01,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:01,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:01,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:01,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:01,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:01,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:01" (1/1) ... [2023-11-26 11:49:01,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@150b6571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:01, skipping insertion in model container [2023-11-26 11:49:01,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:01" (1/1) ... [2023-11-26 11:49:01,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:01,845 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_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2023-11-26 11:49:01,853 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_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2023-11-26 11:49:02,936 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:02,937 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:02,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:02,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:02,940 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:02,958 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:02,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:02,965 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:02,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:03,503 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:49:03,505 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:49:03,506 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:49:03,508 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:49:03,510 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:49:03,511 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:49:03,512 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:49:03,513 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:49:03,513 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:49:03,514 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:49:03,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:03,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:03,893 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:03,895 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:04,076 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:04,102 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_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2023-11-26 11:49:04,103 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_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2023-11-26 11:49:04,159 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,161 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,162 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,227 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:49:04,228 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:49:04,229 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:49:04,230 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:49:04,231 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:49:04,231 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:49:04,239 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:49:04,240 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:49:04,241 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:49:04,243 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:49:04,308 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8315] [2023-11-26 11:49:04,364 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,364 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:49:04,378 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8801-8812] [2023-11-26 11:49:04,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:04,871 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,872 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,872 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,872 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,872 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,873 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,873 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,873 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,873 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,873 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,874 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,874 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,874 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,874 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,874 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,875 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,875 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,875 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:49:04,883 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:04,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04 WrapperNode [2023-11-26 11:49:04,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:04,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:04,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:04,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:04,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,137 INFO L138 Inliner]: procedures = 691, calls = 2624, calls flagged for inlining = 60, calls inlined = 10, statements flattened = 957 [2023-11-26 11:49:05,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:05,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:05,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:05,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:05,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,311 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 11:49:05,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,381 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:05,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:05,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:05,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:05,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (1/1) ... [2023-11-26 11:49:05,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:05,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:05,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:05,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-26 11:49:05,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-26 11:49:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:49:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 11:49:05,520 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 11:49:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:49:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 11:49:05,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 11:49:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:49:05,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:49:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:49:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 11:49:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:05,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 11:49:05,523 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 11:49:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2023-11-26 11:49:05,524 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2023-11-26 11:49:05,524 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_reserve [2023-11-26 11:49:05,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_reserve [2023-11-26 11:49:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-26 11:49:05,525 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-26 11:49:05,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:49:05,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:49:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:49:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 11:49:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 11:49:05,526 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 11:49:05,526 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 11:49:05,527 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-26 11:49:05,527 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-26 11:49:05,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:49:05,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:49:05,857 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:05,859 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:07,226 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:07,396 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:07,397 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 11:49:07,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:07 BoogieIcfgContainer [2023-11-26 11:49:07,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:07,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:07,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:07,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:07,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:01" (1/3) ... [2023-11-26 11:49:07,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48390cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:07, skipping insertion in model container [2023-11-26 11:49:07,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:04" (2/3) ... [2023-11-26 11:49:07,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48390cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:07, skipping insertion in model container [2023-11-26 11:49:07,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:07" (3/3) ... [2023-11-26 11:49:07,407 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_harness.i [2023-11-26 11:49:07,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:07,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:49:07,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:07,509 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;@304799a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:07,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:49:07,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 11:49:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:49:07,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:07,530 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:49:07,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:07,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1866437545, now seen corresponding path program 1 times [2023-11-26 11:49:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027620864] [2023-11-26 11:49:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:49:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:08,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:49:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 11:49:08,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:08,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027620864] [2023-11-26 11:49:08,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027620864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:08,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:08,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:08,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460400548] [2023-11-26 11:49:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:08,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:08,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:08,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:08,401 INFO L87 Difference]: Start difference. First operand has 139 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:49:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:09,200 INFO L93 Difference]: Finished difference Result 290 states and 425 transitions. [2023-11-26 11:49:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:09,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-11-26 11:49:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:09,240 INFO L225 Difference]: With dead ends: 290 [2023-11-26 11:49:09,240 INFO L226 Difference]: Without dead ends: 156 [2023-11-26 11:49:09,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:09,249 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 83 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:09,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 155 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:49:09,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-26 11:49:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 135. [2023-11-26 11:49:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 87 states have internal predecessors, (109), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-26 11:49:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 182 transitions. [2023-11-26 11:49:09,312 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 182 transitions. Word has length 42 [2023-11-26 11:49:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:09,313 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 182 transitions. [2023-11-26 11:49:09,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:49:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 182 transitions. [2023-11-26 11:49:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 11:49:09,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:09,317 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:49:09,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:09,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:09,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1882526199, now seen corresponding path program 1 times [2023-11-26 11:49:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951486799] [2023-11-26 11:49:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:09,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:49:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:49:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:49:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:49:10,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951486799] [2023-11-26 11:49:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951486799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:10,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:10,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:49:10,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386820285] [2023-11-26 11:49:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:10,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:49:10,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:49:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:49:10,212 INFO L87 Difference]: Start difference. First operand 135 states and 182 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:49:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:11,283 INFO L93 Difference]: Finished difference Result 302 states and 419 transitions. [2023-11-26 11:49:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:49:11,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 43 [2023-11-26 11:49:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:11,288 INFO L225 Difference]: With dead ends: 302 [2023-11-26 11:49:11,288 INFO L226 Difference]: Without dead ends: 180 [2023-11-26 11:49:11,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:11,291 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 223 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:11,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 251 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:49:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-26 11:49:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 137. [2023-11-26 11:49:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 87 states have (on average 1.264367816091954) internal successors, (110), 89 states have internal predecessors, (110), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2023-11-26 11:49:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2023-11-26 11:49:11,354 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 43 [2023-11-26 11:49:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:11,355 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2023-11-26 11:49:11,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:49:11,357 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2023-11-26 11:49:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:49:11,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:11,366 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:49:11,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:11,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:11,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1799736500, now seen corresponding path program 1 times [2023-11-26 11:49:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:11,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960677377] [2023-11-26 11:49:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:11,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:49:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:49:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:49:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:49:11,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:11,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960677377] [2023-11-26 11:49:11,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960677377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:11,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:11,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:49:11,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906313813] [2023-11-26 11:49:11,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:11,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:49:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:49:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:11,992 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:49:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:13,455 INFO L93 Difference]: Finished difference Result 243 states and 328 transitions. [2023-11-26 11:49:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:49:13,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 49 [2023-11-26 11:49:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:13,459 INFO L225 Difference]: With dead ends: 243 [2023-11-26 11:49:13,459 INFO L226 Difference]: Without dead ends: 190 [2023-11-26 11:49:13,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:49:13,460 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 117 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:13,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 445 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:49:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-26 11:49:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2023-11-26 11:49:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 92 states have internal predecessors, (113), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (41), 37 states have call predecessors, (41), 36 states have call successors, (41) [2023-11-26 11:49:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2023-11-26 11:49:13,484 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 49 [2023-11-26 11:49:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:13,485 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2023-11-26 11:49:13,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 11:49:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2023-11-26 11:49:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:49:13,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:13,487 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:49:13,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:49:13,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:13,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1627308593, now seen corresponding path program 1 times [2023-11-26 11:49:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:13,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408264032] [2023-11-26 11:49:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:13,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:49:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:49:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:49:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:49:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:14,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:14,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408264032] [2023-11-26 11:49:14,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408264032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:14,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:14,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:49:14,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459444584] [2023-11-26 11:49:14,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:14,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:49:14,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:14,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:49:14,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:14,341 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:49:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:16,376 INFO L93 Difference]: Finished difference Result 342 states and 480 transitions. [2023-11-26 11:49:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:49:16,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2023-11-26 11:49:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:16,389 INFO L225 Difference]: With dead ends: 342 [2023-11-26 11:49:16,390 INFO L226 Difference]: Without dead ends: 256 [2023-11-26 11:49:16,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:49:16,394 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 532 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:16,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 342 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 11:49:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-26 11:49:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 184. [2023-11-26 11:49:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 124 states have internal predecessors, (155), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (53), 47 states have call predecessors, (53), 45 states have call successors, (53) [2023-11-26 11:49:16,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 257 transitions. [2023-11-26 11:49:16,447 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 257 transitions. Word has length 56 [2023-11-26 11:49:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:16,449 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 257 transitions. [2023-11-26 11:49:16,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:49:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 257 transitions. [2023-11-26 11:49:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:49:16,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:16,454 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:16,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:49:16,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:16,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash -833889527, now seen corresponding path program 1 times [2023-11-26 11:49:16,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:16,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30909010] [2023-11-26 11:49:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:16,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:49:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:49:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 11:49:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:49:17,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:17,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30909010] [2023-11-26 11:49:17,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30909010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:17,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072860844] [2023-11-26 11:49:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:17,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:17,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:17,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:17,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:17,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:49:17,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:49:18,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072860844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:18,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-26 11:49:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643810218] [2023-11-26 11:49:18,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:49:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:18,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:49:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:49:18,086 INFO L87 Difference]: Start difference. First operand 184 states and 257 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:49:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:18,583 INFO L93 Difference]: Finished difference Result 221 states and 297 transitions. [2023-11-26 11:49:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:49:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 56 [2023-11-26 11:49:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:18,586 INFO L225 Difference]: With dead ends: 221 [2023-11-26 11:49:18,586 INFO L226 Difference]: Without dead ends: 139 [2023-11-26 11:49:18,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:49:18,588 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 93 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:18,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 667 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:49:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-26 11:49:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-26 11:49:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 89 states have (on average 1.247191011235955) internal successors, (111), 90 states have internal predecessors, (111), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2023-11-26 11:49:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 185 transitions. [2023-11-26 11:49:18,605 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 185 transitions. Word has length 56 [2023-11-26 11:49:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:18,606 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 185 transitions. [2023-11-26 11:49:18,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:49:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 185 transitions. [2023-11-26 11:49:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:49:18,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:18,607 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:49:18,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:49:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:18,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:18,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1295890190, now seen corresponding path program 1 times [2023-11-26 11:49:18,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:18,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318048753] [2023-11-26 11:49:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:18,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:49:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:49:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:49:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:49:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:49:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318048753] [2023-11-26 11:49:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318048753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:20,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 11:49:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000500071] [2023-11-26 11:49:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:49:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:49:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:20,027 INFO L87 Difference]: Start difference. First operand 139 states and 185 transitions. Second operand has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-26 11:49:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:21,825 INFO L93 Difference]: Finished difference Result 199 states and 273 transitions. [2023-11-26 11:49:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:49:21,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2023-11-26 11:49:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:21,828 INFO L225 Difference]: With dead ends: 199 [2023-11-26 11:49:21,828 INFO L226 Difference]: Without dead ends: 197 [2023-11-26 11:49:21,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:49:21,829 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 143 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:21,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 601 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 11:49:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-26 11:49:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 147. [2023-11-26 11:49:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.2340425531914894) internal successors, (116), 96 states have internal predecessors, (116), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2023-11-26 11:49:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 198 transitions. [2023-11-26 11:49:21,849 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 198 transitions. Word has length 60 [2023-11-26 11:49:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:21,850 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 198 transitions. [2023-11-26 11:49:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-26 11:49:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 198 transitions. [2023-11-26 11:49:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:49:21,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:21,851 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:49:21,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:49:21,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:21,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:21,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1970371546, now seen corresponding path program 1 times [2023-11-26 11:49:21,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:21,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067805475] [2023-11-26 11:49:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:49:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:49:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:49:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:49:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067805475] [2023-11-26 11:49:22,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067805475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:22,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:22,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:49:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483953307] [2023-11-26 11:49:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:22,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:49:22,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:22,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:49:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:22,414 INFO L87 Difference]: Start difference. First operand 147 states and 198 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-26 11:49:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:23,852 INFO L93 Difference]: Finished difference Result 263 states and 349 transitions. [2023-11-26 11:49:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:49:23,853 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2023-11-26 11:49:23,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:23,859 INFO L225 Difference]: With dead ends: 263 [2023-11-26 11:49:23,860 INFO L226 Difference]: Without dead ends: 204 [2023-11-26 11:49:23,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:49:23,862 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 115 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:23,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 470 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:49:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-26 11:49:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 147. [2023-11-26 11:49:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.2340425531914894) internal successors, (116), 96 states have internal predecessors, (116), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2023-11-26 11:49:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 198 transitions. [2023-11-26 11:49:23,899 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 198 transitions. Word has length 62 [2023-11-26 11:49:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:23,900 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 198 transitions. [2023-11-26 11:49:23,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-26 11:49:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 198 transitions. [2023-11-26 11:49:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:49:23,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:23,903 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:49:23,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:49:23,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:23,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -745452118, now seen corresponding path program 1 times [2023-11-26 11:49:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170125912] [2023-11-26 11:49:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:49:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:49:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:49:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:49:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 11:49:25,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:25,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170125912] [2023-11-26 11:49:25,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170125912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:25,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:25,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:49:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965692087] [2023-11-26 11:49:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:25,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:49:25,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:49:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:49:25,401 INFO L87 Difference]: Start difference. First operand 147 states and 198 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-26 11:49:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:26,773 INFO L93 Difference]: Finished difference Result 353 states and 515 transitions. [2023-11-26 11:49:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:49:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 64 [2023-11-26 11:49:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:26,776 INFO L225 Difference]: With dead ends: 353 [2023-11-26 11:49:26,776 INFO L226 Difference]: Without dead ends: 219 [2023-11-26 11:49:26,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:49:26,779 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 178 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:26,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 348 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:49:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-26 11:49:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 152. [2023-11-26 11:49:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 101 states have internal predecessors, (123), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2023-11-26 11:49:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 205 transitions. [2023-11-26 11:49:26,805 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 205 transitions. Word has length 64 [2023-11-26 11:49:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:26,806 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 205 transitions. [2023-11-26 11:49:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-26 11:49:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 205 transitions. [2023-11-26 11:49:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:49:26,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:26,807 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:49:26,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:49:26,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:26,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash -44387540, now seen corresponding path program 1 times [2023-11-26 11:49:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:26,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379185778] [2023-11-26 11:49:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:26,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:28,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:28,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:49:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:49:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:29,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:49:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:49:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:49:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:49:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:49:29,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379185778] [2023-11-26 11:49:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379185778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806674581] [2023-11-26 11:49:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:29,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:29,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:29,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:29,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebb35686-0b9e-49b9-ba8e-a9cbb45f2ebb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:49:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:30,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 11:49:30,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:30,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:49:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:31,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806674581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:31,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:49:31,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2023-11-26 11:49:31,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827512031] [2023-11-26 11:49:31,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:31,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:49:31,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:49:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:49:31,187 INFO L87 Difference]: Start difference. First operand 152 states and 205 transitions. Second operand has 11 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:49:38,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:49:42,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]