./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness_negated.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_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/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_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/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_43848b4c-e714-4d2d-a072-e134598e3137/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 a7f67f0b945b231903325b9d87712fabf07c1ed9b39f1b1898d1ef5cff9915d4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:43:43,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:43:43,449 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:43:43,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:43:43,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:43:43,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:43:43,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:43:43,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:43:43,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:43:43,507 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:43:43,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:43:43,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:43:43,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:43:43,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:43:43,511 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:43:43,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:43:43,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:43:43,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:43:43,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:43:43,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:43:43,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:43:43,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:43:43,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:43:43,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:43:43,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:43:43,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:43:43,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:43:43,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:43:43,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:43,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:43:43,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:43:43,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:43:43,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:43:43,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:43:43,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:43:43,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:43:43,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:43:43,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:43:43,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:43:43,536 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_43848b4c-e714-4d2d-a072-e134598e3137/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7f67f0b945b231903325b9d87712fabf07c1ed9b39f1b1898d1ef5cff9915d4 [2023-11-26 11:43:43,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:43:43,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:43:43,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:43:43,892 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:43:43,892 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:43:43,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness_negated.i [2023-11-26 11:43:46,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:43:47,551 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:43:47,551 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness_negated.i [2023-11-26 11:43:47,607 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/data/c530d8909/71aa3c3c0c1942eeb4a95bfd789193ae/FLAGcee1a1da1 [2023-11-26 11:43:47,624 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/data/c530d8909/71aa3c3c0c1942eeb4a95bfd789193ae [2023-11-26 11:43:47,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:43:47,628 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:43:47,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:47,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:43:47,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:43:47,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6140efb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47, skipping insertion in model container [2023-11-26 11:43:47,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:43:48,119 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_43848b4c-e714-4d2d-a072-e134598e3137/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness_negated.i[4497,4510] [2023-11-26 11:43:48,128 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_43848b4c-e714-4d2d-a072-e134598e3137/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness_negated.i[4557,4570] [2023-11-26 11:43:49,221 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,222 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,223 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,224 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,226 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,249 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,250 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,253 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,253 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:49,866 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:43:49,867 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:43:49,869 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:43:49,870 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:43:49,872 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:43:49,873 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:43:49,874 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:43:49,875 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:43:49,876 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:43:49,877 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:43:50,364 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,364 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:50,549 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:43:50,576 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_43848b4c-e714-4d2d-a072-e134598e3137/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness_negated.i[4497,4510] [2023-11-26 11:43:50,577 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_43848b4c-e714-4d2d-a072-e134598e3137/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness_negated.i[4557,4570] [2023-11-26 11:43:50,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,638 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,639 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,656 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,657 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,658 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,660 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,722 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:43:50,724 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:43:50,725 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:43:50,729 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:43:50,731 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:43:50,732 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:43:50,733 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:43:50,734 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:43:50,735 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:43:50,744 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:43:50,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2023-11-26 11:43:50,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,874 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:43:50,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2023-11-26 11:43:50,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:51,224 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,225 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,225 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,225 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,225 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,226 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,226 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,227 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,227 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,227 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,228 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,228 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,228 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,228 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,229 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,230 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,230 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,230 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:43:51,239 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:43:51,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51 WrapperNode [2023-11-26 11:43:51,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:51,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:51,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:43:51,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:43:51,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,520 INFO L138 Inliner]: procedures = 690, calls = 2627, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 874 [2023-11-26 11:43:51,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:51,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:43:51,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:43:51,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:43:51,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,551 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,660 INFO L175 MemorySlicer]: Split 562 memory accesses to 8 slices as follows [4, 2, 256, 236, 6, 47, 8, 3]. 46 percent of accesses are in the largest equivalence class. The 510 initializations are split as follows [0, 2, 256, 236, 0, 8, 5, 3]. The 8 writes are split as follows [2, 0, 0, 0, 2, 3, 1, 0]. [2023-11-26 11:43:51,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:43:51,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:43:51,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:43:51,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:43:51,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (1/1) ... [2023-11-26 11:43:51,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:51,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:43:51,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:43:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2023-11-26 11:43:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-26 11:43:51,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-26 11:43:51,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton32 [2023-11-26 11:43:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton32 [2023-11-26 11:43:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:43:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 11:43:51,885 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 11:43:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:43:51,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:43:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:43:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:43:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:43:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:43:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:43:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:43:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:43:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:43:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:43:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:43:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:43:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:43:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:43:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:43:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:43:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:43:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:43:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:43:51,891 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-26 11:43:51,891 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-26 11:43:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:43:51,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:43:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 11:43:51,892 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 11:43:51,892 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-26 11:43:51,892 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-26 11:43:51,893 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:43:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:43:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-26 11:43:51,894 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-26 11:43:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:43:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:43:51,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:43:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:43:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:43:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:43:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:43:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:43:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:43:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-26 11:43:51,896 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-26 11:43:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:43:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:43:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:43:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:43:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:43:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:43:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:43:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 11:43:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 11:43:51,898 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 11:43:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:43:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:43:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:43:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:43:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:43:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:43:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:43:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:43:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:43:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:43:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:43:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:43:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:43:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:43:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:43:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:43:52,384 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:43:52,387 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:43:53,937 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:43:54,313 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:43:54,314 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:43:54,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:54 BoogieIcfgContainer [2023-11-26 11:43:54,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:43:54,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:43:54,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:43:54,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:43:54,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:43:47" (1/3) ... [2023-11-26 11:43:54,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e149c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:43:54, skipping insertion in model container [2023-11-26 11:43:54,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:51" (2/3) ... [2023-11-26 11:43:54,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e149c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:43:54, skipping insertion in model container [2023-11-26 11:43:54,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:54" (3/3) ... [2023-11-26 11:43:54,332 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness_negated.i [2023-11-26 11:43:54,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:43:54,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:43:54,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:43:54,459 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;@41578184, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:43:54,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:43:54,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 73 states have internal predecessors, (92), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-26 11:43:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:43:54,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:54,479 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:54,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:54,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 700904012, now seen corresponding path program 1 times [2023-11-26 11:43:54,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:54,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423511785] [2023-11-26 11:43:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:54,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:43:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:43:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:55,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:43:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:43:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:43:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:43:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:43:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:43:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:43:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:43:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-26 11:43:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 11:43:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 11:43:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 11:43:56,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:56,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423511785] [2023-11-26 11:43:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423511785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:56,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541992280] [2023-11-26 11:43:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:56,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:56,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:56,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:43:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:57,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:43:57,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:43:57,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:43:57,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541992280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:57,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:43:57,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-26 11:43:57,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726521877] [2023-11-26 11:43:57,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:57,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:43:57,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:43:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:43:57,369 INFO L87 Difference]: Start difference. First operand has 120 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 73 states have internal predecessors, (92), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 11:43:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:57,681 INFO L93 Difference]: Finished difference Result 240 states and 354 transitions. [2023-11-26 11:43:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:43:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 80 [2023-11-26 11:43:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:57,697 INFO L225 Difference]: With dead ends: 240 [2023-11-26 11:43:57,697 INFO L226 Difference]: Without dead ends: 120 [2023-11-26 11:43:57,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:43:57,706 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 43 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:57,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 352 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:43:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-26 11:43:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-26 11:43:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 74 states have internal predecessors, (89), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2023-11-26 11:43:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 162 transitions. [2023-11-26 11:43:57,775 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 162 transitions. Word has length 80 [2023-11-26 11:43:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:57,776 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 162 transitions. [2023-11-26 11:43:57,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 11:43:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 162 transitions. [2023-11-26 11:43:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 11:43:57,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:57,789 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:57,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:43:58,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:58,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:58,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:58,001 INFO L85 PathProgramCache]: Analyzing trace with hash -253833929, now seen corresponding path program 1 times [2023-11-26 11:43:58,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:58,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026951886] [2023-11-26 11:43:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:58,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:58,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:43:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:43:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:43:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:43:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:43:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:43:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:43:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:43:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:43:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:43:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 11:43:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:43:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 11:43:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 11:43:59,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026951886] [2023-11-26 11:43:59,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026951886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413750918] [2023-11-26 11:43:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:59,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:59,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:59,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:59,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:43:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:59,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:43:59,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-26 11:44:00,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:44:00,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413750918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:00,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:44:00,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-26 11:44:00,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131315219] [2023-11-26 11:44:00,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:44:00,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:44:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:44:00,117 INFO L87 Difference]: Start difference. First operand 120 states and 162 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 11:44:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:00,804 INFO L93 Difference]: Finished difference Result 214 states and 289 transitions. [2023-11-26 11:44:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:44:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2023-11-26 11:44:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:00,808 INFO L225 Difference]: With dead ends: 214 [2023-11-26 11:44:00,808 INFO L226 Difference]: Without dead ends: 120 [2023-11-26 11:44:00,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:44:00,811 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 43 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:00,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 479 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:44:00,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-26 11:44:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-26 11:44:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 74 states have internal predecessors, (89), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-26 11:44:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 161 transitions. [2023-11-26 11:44:00,828 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 161 transitions. Word has length 86 [2023-11-26 11:44:00,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:00,828 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 161 transitions. [2023-11-26 11:44:00,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 11:44:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 161 transitions. [2023-11-26 11:44:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-26 11:44:00,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:00,832 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:00,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:01,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:01,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:01,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash 303730028, now seen corresponding path program 2 times [2023-11-26 11:44:01,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:01,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373639319] [2023-11-26 11:44:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:01,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:44:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:44:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:44:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:44:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:44:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:44:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:44:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:44:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:44:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:44:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:44:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 11:44:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 11:44:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-26 11:44:02,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:02,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373639319] [2023-11-26 11:44:02,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373639319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:02,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862964211] [2023-11-26 11:44:02,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:44:02,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:02,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:44:02,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:44:02,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:44:02,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:44:02,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 11:44:02,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:44:02,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862964211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:02,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:44:02,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-26 11:44:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037118365] [2023-11-26 11:44:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:02,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:44:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:44:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:44:02,761 INFO L87 Difference]: Start difference. First operand 120 states and 161 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-26 11:44:03,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:03,484 INFO L93 Difference]: Finished difference Result 128 states and 169 transitions. [2023-11-26 11:44:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:44:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-11-26 11:44:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:03,487 INFO L225 Difference]: With dead ends: 128 [2023-11-26 11:44:03,487 INFO L226 Difference]: Without dead ends: 126 [2023-11-26 11:44:03,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:44:03,489 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 5 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:03,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 837 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:44:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-26 11:44:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2023-11-26 11:44:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 77 states have internal predecessors, (92), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2023-11-26 11:44:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2023-11-26 11:44:03,505 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 92 [2023-11-26 11:44:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:03,505 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2023-11-26 11:44:03,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-26 11:44:03,506 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2023-11-26 11:44:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-26 11:44:03,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:03,508 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:03,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:03,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:03,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:03,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash -658839583, now seen corresponding path program 3 times [2023-11-26 11:44:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277048633] [2023-11-26 11:44:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:44:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:44:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:44:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:44:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:44:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:44:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:44:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:44:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:44:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:44:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:44:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 11:44:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 11:44:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-26 11:44:04,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277048633] [2023-11-26 11:44:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277048633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677456771] [2023-11-26 11:44:04,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:44:04,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:04,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:04,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:04,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:44:05,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 11:44:05,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:44:05,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 11:44:05,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-26 11:44:05,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:44:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 11:44:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677456771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:44:05,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:44:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 7] total 15 [2023-11-26 11:44:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031462317] [2023-11-26 11:44:05,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:44:05,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:44:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:44:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:44:05,959 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-26 11:44:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:08,453 INFO L93 Difference]: Finished difference Result 208 states and 280 transitions. [2023-11-26 11:44:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:44:08,454 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 98 [2023-11-26 11:44:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:08,457 INFO L225 Difference]: With dead ends: 208 [2023-11-26 11:44:08,457 INFO L226 Difference]: Without dead ends: 118 [2023-11-26 11:44:08,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:44:08,459 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 184 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:08,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 350 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 11:44:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-26 11:44:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-11-26 11:44:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 11:44:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 156 transitions. [2023-11-26 11:44:08,497 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 156 transitions. Word has length 98 [2023-11-26 11:44:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:08,500 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 156 transitions. [2023-11-26 11:44:08,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-26 11:44:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 156 transitions. [2023-11-26 11:44:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 11:44:08,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:08,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:08,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:08,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:08,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:08,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:08,723 INFO L85 PathProgramCache]: Analyzing trace with hash -523516724, now seen corresponding path program 1 times [2023-11-26 11:44:08,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:08,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135991802] [2023-11-26 11:44:08,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:08,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:44:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:44:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:44:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:44:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:44:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:44:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:44:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:44:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:44:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:44:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 11:44:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 11:44:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:11,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 11:44:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-26 11:44:11,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:11,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135991802] [2023-11-26 11:44:11,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135991802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:11,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692897390] [2023-11-26 11:44:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:11,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:11,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:11,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:11,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:44:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:12,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-26 11:44:12,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:12,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:44:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-26 11:44:12,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:44:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692897390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:44:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2023-11-26 11:44:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309348399] [2023-11-26 11:44:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:12,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:44:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:44:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:44:12,853 INFO L87 Difference]: Start difference. First operand 118 states and 156 transitions. Second operand has 12 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-26 11:44:17,973 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 11:44:22,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:44:26,931 WARN L539 Checker$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 11:44:31,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 11:44:35,849 WARN L539 Checker$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 11:44:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:36,147 INFO L93 Difference]: Finished difference Result 277 states and 369 transitions. [2023-11-26 11:44:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:44:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 104 [2023-11-26 11:44:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:36,150 INFO L225 Difference]: With dead ends: 277 [2023-11-26 11:44:36,151 INFO L226 Difference]: Without dead ends: 178 [2023-11-26 11:44:36,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:44:36,153 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 156 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 30 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:36,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 714 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 524 Invalid, 5 Unknown, 0 Unchecked, 23.1s Time] [2023-11-26 11:44:36,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-26 11:44:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2023-11-26 11:44:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 115 states have internal predecessors, (139), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-11-26 11:44:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 234 transitions. [2023-11-26 11:44:36,202 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 234 transitions. Word has length 104 [2023-11-26 11:44:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:36,202 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 234 transitions. [2023-11-26 11:44:36,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-26 11:44:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 234 transitions. [2023-11-26 11:44:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-26 11:44:36,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:36,204 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:36,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:36,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:36,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:36,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash 734985044, now seen corresponding path program 1 times [2023-11-26 11:44:36,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:36,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993834731] [2023-11-26 11:44:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:36,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:44:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:44:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:44:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:44:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:44:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:37,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:44:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:44:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:44:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 11:44:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:44:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 11:44:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:44:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 11:44:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-26 11:44:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993834731] [2023-11-26 11:44:38,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993834731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349788808] [2023-11-26 11:44:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:38,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:38,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:38,100 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:38,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43848b4c-e714-4d2d-a072-e134598e3137/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:44:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:38,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:44:38,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-26 11:44:39,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:44:39,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349788808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:39,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:44:39,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-11-26 11:44:39,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608791680] [2023-11-26 11:44:39,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:39,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:44:39,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:39,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:44:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:44:39,109 INFO L87 Difference]: Start difference. First operand 176 states and 234 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)