./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/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_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/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_80829f7f-0d7a-4f7d-a152-30323973f13e/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 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:30,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:30,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 10:41:30,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:30,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:30,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:30,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:30,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:30,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:30,359 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:30,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:30,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:30,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:30,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:30,363 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:30,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:30,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:30,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:30,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:30,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:30,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:30,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:30,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:30,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:30,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:30,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:30,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:30,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:30,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:30,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:30,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:30,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:30,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:30,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:30,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:30,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:30,373 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:30,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:30,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:30,374 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_80829f7f-0d7a-4f7d-a152-30323973f13e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d [2023-11-26 10:41:30,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:30,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:30,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:30,662 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:30,663 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:30,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2023-11-26 10:41:33,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:34,331 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:34,332 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2023-11-26 10:41:34,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/data/cf14a5f58/ad4f81927e52475a8da415966090186b/FLAGb98253363 [2023-11-26 10:41:34,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/data/cf14a5f58/ad4f81927e52475a8da415966090186b [2023-11-26 10:41:34,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:34,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:34,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:34,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:34,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:34,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:34" (1/1) ... [2023-11-26 10:41:34,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5293e557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:34, skipping insertion in model container [2023-11-26 10:41:34,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:34" (1/1) ... [2023-11-26 10:41:34,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:34,817 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_80829f7f-0d7a-4f7d-a152-30323973f13e/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2023-11-26 10:41:34,826 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_80829f7f-0d7a-4f7d-a152-30323973f13e/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2023-11-26 10:41:36,023 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,024 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,025 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,026 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,027 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,052 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,053 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,056 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:36,663 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 10:41:36,664 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 10:41:36,666 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 10:41:36,667 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 10:41:36,669 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 10:41:36,670 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 10:41:36,671 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 10:41:36,672 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 10:41:36,673 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 10:41:36,674 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 10:41:37,208 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,208 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:37,388 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:37,415 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_80829f7f-0d7a-4f7d-a152-30323973f13e/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2023-11-26 10:41:37,415 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_80829f7f-0d7a-4f7d-a152-30323973f13e/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2023-11-26 10:41:37,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,547 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 10:41:37,548 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 10:41:37,549 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 10:41:37,550 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 10:41:37,551 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 10:41:37,552 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 10:41:37,555 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 10:41:37,556 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 10:41:37,557 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 10:41:37,557 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 10:41:37,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-26 10:41:37,656 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,657 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:41:37,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-26 10:41:37,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:37,956 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,956 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,956 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,956 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,957 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,957 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,957 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,957 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,957 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,957 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,958 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,958 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,958 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,958 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,958 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,958 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,959 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,959 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:41:37,967 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:37,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37 WrapperNode [2023-11-26 10:41:37,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:37,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:37,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:37,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:37,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,220 INFO L138 Inliner]: procedures = 689, calls = 2640, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 874 [2023-11-26 10:41:38,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:38,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:38,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:38,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:38,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,375 INFO L175 MemorySlicer]: Split 562 memory accesses to 7 slices as follows [2, 256, 49, 236, 6, 10, 3]. 46 percent of accesses are in the largest equivalence class. The 510 initializations are split as follows [2, 256, 8, 236, 0, 5, 3]. The 6 writes are split as follows [0, 0, 3, 0, 2, 1, 0]. [2023-11-26 10:41:38,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:38,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:38,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:38,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:38,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (1/1) ... [2023-11-26 10:41:38,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:38,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:38,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:38,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-26 10:41:38,632 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-26 10:41:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:41:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 10:41:38,633 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 10:41:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2023-11-26 10:41:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2023-11-26 10:41:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2023-11-26 10:41:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2023-11-26 10:41:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2023-11-26 10:41:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2023-11-26 10:41:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#6 [2023-11-26 10:41:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-26 10:41:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-26 10:41:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-26 10:41:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-26 10:41:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-26 10:41:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-26 10:41:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-26 10:41:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-26 10:41:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-26 10:41:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-26 10:41:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-26 10:41:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-26 10:41:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-26 10:41:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-26 10:41:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-26 10:41:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-26 10:41:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-26 10:41:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-26 10:41:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-26 10:41:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-26 10:41:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-26 10:41:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-26 10:41:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-26 10:41:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-26 10:41:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-26 10:41:38,639 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-26 10:41:38,639 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-26 10:41:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:41:38,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:41:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:41:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:41:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:41:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:41:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 10:41:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 10:41:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 10:41:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 10:41:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:38,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 10:41:38,640 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 10:41:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-26 10:41:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-26 10:41:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-26 10:41:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-26 10:41:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-26 10:41:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-26 10:41:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-26 10:41:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-26 10:41:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:41:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 10:41:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-26 10:41:38,644 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-26 10:41:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 10:41:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 10:41:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 10:41:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 10:41:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 10:41:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 10:41:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 10:41:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 10:41:38,645 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-26 10:41:38,645 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 10:41:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#6 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:41:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:41:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:41:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:41:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:41:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 10:41:39,069 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:39,072 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:40,983 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:41,149 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:41,149 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:41:41,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:41 BoogieIcfgContainer [2023-11-26 10:41:41,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:41,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:41,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:41,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:41,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:34" (1/3) ... [2023-11-26 10:41:41,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b062ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:41, skipping insertion in model container [2023-11-26 10:41:41,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:37" (2/3) ... [2023-11-26 10:41:41,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b062ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:41, skipping insertion in model container [2023-11-26 10:41:41,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:41" (3/3) ... [2023-11-26 10:41:41,164 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_harness.i [2023-11-26 10:41:41,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:41,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:41:41,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:41,262 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;@1db20e23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:41,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:41:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 74 states have internal predecessors, (96), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-26 10:41:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:41:41,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:41,284 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2023-11-26 10:41:41,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:41,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash 94708828, now seen corresponding path program 1 times [2023-11-26 10:41:41,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:41,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291723371] [2023-11-26 10:41:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:41,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:41:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:41:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:41:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 10:41:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 10:41:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 10:41:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:41:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:41:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-26 10:41:42,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:42,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291723371] [2023-11-26 10:41:42,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291723371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:42,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:42,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227567625] [2023-11-26 10:41:42,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:42,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:42,296 INFO L87 Difference]: Start difference. First operand has 117 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 74 states have internal predecessors, (96), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 10:41:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:43,212 INFO L93 Difference]: Finished difference Result 232 states and 340 transitions. [2023-11-26 10:41:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:43,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2023-11-26 10:41:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:43,226 INFO L225 Difference]: With dead ends: 232 [2023-11-26 10:41:43,227 INFO L226 Difference]: Without dead ends: 115 [2023-11-26 10:41:43,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 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 10:41:43,246 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 64 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:43,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 115 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:41:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-26 10:41:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-26 10:41:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 73 states have internal predecessors, (93), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:41:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 156 transitions. [2023-11-26 10:41:43,328 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 156 transitions. Word has length 69 [2023-11-26 10:41:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:43,328 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 156 transitions. [2023-11-26 10:41:43,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 10:41:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 156 transitions. [2023-11-26 10:41:43,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:41:43,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:43,336 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2023-11-26 10:41:43,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:41:43,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:43,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1226731426, now seen corresponding path program 1 times [2023-11-26 10:41:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:43,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612662194] [2023-11-26 10:41:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:43,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:41:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:41:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:41:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 10:41:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 10:41:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 10:41:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:41:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:41:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-26 10:41:44,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:44,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612662194] [2023-11-26 10:41:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612662194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:44,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575031274] [2023-11-26 10:41:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:44,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:44,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:44,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:44,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:41:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:45,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:41:45,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:41:45,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:45,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575031274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:45,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:45,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-26 10:41:45,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97098871] [2023-11-26 10:41:45,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:45,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:41:45,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:45,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:41:45,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:41:45,177 INFO L87 Difference]: Start difference. First operand 115 states and 156 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 10:41:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:45,405 INFO L93 Difference]: Finished difference Result 213 states and 295 transitions. [2023-11-26 10:41:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:45,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 69 [2023-11-26 10:41:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:45,409 INFO L225 Difference]: With dead ends: 213 [2023-11-26 10:41:45,409 INFO L226 Difference]: Without dead ends: 117 [2023-11-26 10:41:45,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:41:45,411 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 50 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:45,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 348 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:41:45,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-26 10:41:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-26 10:41:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 75 states have internal predecessors, (94), 32 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-11-26 10:41:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 160 transitions. [2023-11-26 10:41:45,429 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 160 transitions. Word has length 69 [2023-11-26 10:41:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:45,429 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 160 transitions. [2023-11-26 10:41:45,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 10:41:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 160 transitions. [2023-11-26 10:41:45,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 10:41:45,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:45,432 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:45,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:45,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:45,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:45,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1086374157, now seen corresponding path program 1 times [2023-11-26 10:41:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74882221] [2023-11-26 10:41:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:45,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:41:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:41:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:41:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:41:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:41:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:41:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:41:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:41:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-26 10:41:46,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74882221] [2023-11-26 10:41:46,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74882221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080299215] [2023-11-26 10:41:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:46,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:46,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:46,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:46,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:41:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:47,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:41:47,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-26 10:41:47,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080299215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:47,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-26 10:41:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304170279] [2023-11-26 10:41:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:41:47,518 INFO L87 Difference]: Start difference. First operand 117 states and 160 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 10:41:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:48,010 INFO L93 Difference]: Finished difference Result 206 states and 283 transitions. [2023-11-26 10:41:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:41:48,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 75 [2023-11-26 10:41:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:48,013 INFO L225 Difference]: With dead ends: 206 [2023-11-26 10:41:48,013 INFO L226 Difference]: Without dead ends: 115 [2023-11-26 10:41:48,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 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 10:41:48,015 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 68 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:48,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 681 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:41:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-26 10:41:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-26 10:41:48,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 73 states have internal predecessors, (92), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:41:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 155 transitions. [2023-11-26 10:41:48,031 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 155 transitions. Word has length 75 [2023-11-26 10:41:48,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:48,031 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 155 transitions. [2023-11-26 10:41:48,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 10:41:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 155 transitions. [2023-11-26 10:41:48,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-26 10:41:48,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:48,034 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-26 10:41:48,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:48,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:48,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:48,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:48,246 INFO L85 PathProgramCache]: Analyzing trace with hash -234279661, now seen corresponding path program 1 times [2023-11-26 10:41:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:48,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666603270] [2023-11-26 10:41:48,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:48,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:41:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:41:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:41:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:41:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:41:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:41:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:41:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:41:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-26 10:41:49,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:49,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666603270] [2023-11-26 10:41:49,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666603270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:49,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:49,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 10:41:49,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943946174] [2023-11-26 10:41:49,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:49,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:41:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:41:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:41:49,669 INFO L87 Difference]: Start difference. First operand 115 states and 155 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-26 10:41:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:51,609 INFO L93 Difference]: Finished difference Result 126 states and 170 transitions. [2023-11-26 10:41:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:41:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 87 [2023-11-26 10:41:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:51,613 INFO L225 Difference]: With dead ends: 126 [2023-11-26 10:41:51,614 INFO L226 Difference]: Without dead ends: 124 [2023-11-26 10:41:51,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:41:51,615 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 92 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:51,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 464 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 10:41:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-26 10:41:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2023-11-26 10:41:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 77 states have (on average 1.2597402597402598) internal successors, (97), 79 states have internal predecessors, (97), 33 states have call successors, (33), 11 states have call predecessors, (33), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-26 10:41:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 167 transitions. [2023-11-26 10:41:51,632 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 167 transitions. Word has length 87 [2023-11-26 10:41:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:51,633 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 167 transitions. [2023-11-26 10:41:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-26 10:41:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 167 transitions. [2023-11-26 10:41:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-26 10:41:51,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:51,636 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:51,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:41:51,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:51,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:51,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1422666315, now seen corresponding path program 1 times [2023-11-26 10:41:51,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:51,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522295859] [2023-11-26 10:41:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:51,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:41:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:41:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:41:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:41:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:41:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:41:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:41:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:41:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-26 10:41:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522295859] [2023-11-26 10:41:53,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522295859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:53,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:53,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:41:53,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613803890] [2023-11-26 10:41:53,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:53,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:41:53,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:53,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:41:53,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:53,051 INFO L87 Difference]: Start difference. First operand 123 states and 167 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-26 10:41:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:54,743 INFO L93 Difference]: Finished difference Result 250 states and 354 transitions. [2023-11-26 10:41:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:41:54,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 91 [2023-11-26 10:41:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:54,747 INFO L225 Difference]: With dead ends: 250 [2023-11-26 10:41:54,747 INFO L226 Difference]: Without dead ends: 146 [2023-11-26 10:41:54,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:41:54,749 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 126 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:54,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 276 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 10:41:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-26 10:41:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 128. [2023-11-26 10:41:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 84 states have internal predecessors, (104), 33 states have call successors, (33), 11 states have call predecessors, (33), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-26 10:41:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2023-11-26 10:41:54,767 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 91 [2023-11-26 10:41:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:54,768 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2023-11-26 10:41:54,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-26 10:41:54,768 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2023-11-26 10:41:54,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-26 10:41:54,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:54,770 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:54,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:41:54,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:54,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2123730893, now seen corresponding path program 1 times [2023-11-26 10:41:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022691187] [2023-11-26 10:41:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:41:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:57,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:41:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:41:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:57,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:41:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:41:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:41:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:41:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:41:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:41:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 10:41:58,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:58,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022691187] [2023-11-26 10:41:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022691187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:58,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333480632] [2023-11-26 10:41:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:58,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:58,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:58,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:58,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:41:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:58,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 2609 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-26 10:41:58,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:59,056 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 10:41:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-26 10:41:59,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:59,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333480632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:59,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:59,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2023-11-26 10:41:59,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686786201] [2023-11-26 10:41:59,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:59,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:41:59,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:59,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:41:59,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:41:59,367 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand has 12 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 10:42:03,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 10:42:09,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 10:42:13,923 WARN L539 Checker$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 10:42:18,376 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 10:42:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:19,104 INFO L93 Difference]: Finished difference Result 314 states and 425 transitions. [2023-11-26 10:42:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:42:19,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 91 [2023-11-26 10:42:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:19,107 INFO L225 Difference]: With dead ends: 314 [2023-11-26 10:42:19,107 INFO L226 Difference]: Without dead ends: 205 [2023-11-26 10:42:19,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:42:19,112 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 173 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 23 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:19,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 833 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 561 Invalid, 4 Unknown, 0 Unchecked, 19.6s Time] [2023-11-26 10:42:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-26 10:42:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 200. [2023-11-26 10:42:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 133 states have (on average 1.2857142857142858) internal successors, (171), 136 states have internal predecessors, (171), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (50), 47 states have call predecessors, (50), 46 states have call successors, (50) [2023-11-26 10:42:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 269 transitions. [2023-11-26 10:42:19,152 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 269 transitions. Word has length 91 [2023-11-26 10:42:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:19,153 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 269 transitions. [2023-11-26 10:42:19,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 10:42:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 269 transitions. [2023-11-26 10:42:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 10:42:19,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:19,158 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:42:19,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:19,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:19,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1199605753, now seen corresponding path program 2 times [2023-11-26 10:42:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:19,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514363081] [2023-11-26 10:42:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:19,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:42:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:42:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:42:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:42:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:42:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:42:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 10:42:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 10:42:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:42:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:42:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:42:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-26 10:42:20,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:20,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514363081] [2023-11-26 10:42:20,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514363081] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:20,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931572753] [2023-11-26 10:42:20,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:42:20,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:20,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:20,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:20,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:42:21,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:42:21,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:42:21,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 10:42:21,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:42:21,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931572753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:21,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:42:21,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-26 10:42:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370215235] [2023-11-26 10:42:21,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:21,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:42:21,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:21,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:42:21,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:42:21,651 INFO L87 Difference]: Start difference. First operand 200 states and 269 transitions. Second operand has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 10:42:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:22,460 INFO L93 Difference]: Finished difference Result 389 states and 527 transitions. [2023-11-26 10:42:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:42:22,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-11-26 10:42:22,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:22,463 INFO L225 Difference]: With dead ends: 389 [2023-11-26 10:42:22,464 INFO L226 Difference]: Without dead ends: 208 [2023-11-26 10:42:22,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:42:22,466 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 13 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:22,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1100 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:42:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-26 10:42:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2023-11-26 10:42:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 136 states have (on average 1.2794117647058822) internal successors, (174), 140 states have internal predecessors, (174), 48 states have call successors, (48), 16 states have call predecessors, (48), 19 states have return successors, (53), 47 states have call predecessors, (53), 46 states have call successors, (53) [2023-11-26 10:42:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 275 transitions. [2023-11-26 10:42:22,492 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 275 transitions. Word has length 95 [2023-11-26 10:42:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:22,492 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 275 transitions. [2023-11-26 10:42:22,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 10:42:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 275 transitions. [2023-11-26 10:42:22,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 10:42:22,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:22,494 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:42:22,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:22,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:22,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:22,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash -964141086, now seen corresponding path program 1 times [2023-11-26 10:42:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:22,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461095438] [2023-11-26 10:42:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:22,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:42:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:42:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:42:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:42:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:42:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:42:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 10:42:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:42:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:42:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:42:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:42:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-26 10:42:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461095438] [2023-11-26 10:42:23,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461095438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883340720] [2023-11-26 10:42:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:23,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:23,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:23,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80829f7f-0d7a-4f7d-a152-30323973f13e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process