./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:24:43,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:24:43,899 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:24:43,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:24:43,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:24:43,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:24:43,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:24:43,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:24:43,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:24:43,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:24:43,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:24:43,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:24:43,960 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:24:43,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:24:43,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:24:43,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:24:43,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:24:43,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:24:43,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:24:43,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:24:43,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:24:43,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:24:43,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:24:43,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:24:43,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:24:43,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:24:43,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:24:43,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:24:43,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:24:43,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:24:43,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:24:43,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:24:43,973 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:24:43,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:24:43,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:24:43,974 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:24:43,974 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_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2023-11-06 22:24:44,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:24:44,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:24:44,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:24:44,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:24:44,361 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:24:44,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2023-11-06 22:24:47,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:24:48,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:24:48,186 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2023-11-06 22:24:48,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/data/86b5e6327/c7de014071984df0b984064cbf278fe6/FLAG9c50276b0 [2023-11-06 22:24:48,253 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/data/86b5e6327/c7de014071984df0b984064cbf278fe6 [2023-11-06 22:24:48,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:24:48,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:24:48,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:48,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:24:48,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:24:48,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:48" (1/1) ... [2023-11-06 22:24:48,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e9cf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:48, skipping insertion in model container [2023-11-06 22:24:48,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:48" (1/1) ... [2023-11-06 22:24:48,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:24:48,767 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_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2023-11-06 22:24:48,776 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_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2023-11-06 22:24:49,811 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:49,820 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:49,821 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:49,823 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:49,832 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:49,848 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:49,849 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:49,852 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:49,853 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,298 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:24:50,299 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:24:50,301 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:24:50,305 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:24:50,312 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:24:50,313 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:24:50,316 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:24:50,318 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:24:50,321 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:24:50,324 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:24:50,653 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,654 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:50,782 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:24:50,796 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_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2023-11-06 22:24:50,797 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_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2023-11-06 22:24:50,841 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,841 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,842 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,842 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,843 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,862 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,862 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,864 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,865 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:50,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:24:50,958 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:24:50,959 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:24:50,959 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:24:50,964 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:24:50,965 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:24:50,966 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:24:50,967 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:24:50,968 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:24:50,968 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:24:51,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-06 22:24:51,132 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:51,132 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:24:51,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-06 22:24:51,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:51,459 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,459 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,461 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,461 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,462 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,462 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,462 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,462 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,462 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,462 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,463 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,463 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,464 WARN L672 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,464 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,465 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,465 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,465 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,466 WARN L672 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:51,473 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:24:51,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51 WrapperNode [2023-11-06 22:24:51,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:51,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:24:51,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:24:51,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:24:51,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,671 INFO L138 Inliner]: procedures = 690, calls = 2622, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 860 [2023-11-06 22:24:51,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:24:51,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:24:51,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:24:51,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:24:51,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:24:51,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:24:51,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:24:51,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:24:51,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (1/1) ... [2023-11-06 22:24:51,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:24:51,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:51,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:24:51,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:24:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2023-11-06 22:24:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2023-11-06 22:24:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2023-11-06 22:24:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-06 22:24:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-06 22:24:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:24:51,921 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-06 22:24:51,921 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-06 22:24:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:24:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:24:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:24:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:24:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:24:51,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:24:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-06 22:24:51,923 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-06 22:24:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:24:51,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:24:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-06 22:24:51,923 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-06 22:24:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-06 22:24:51,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-06 22:24:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:24:51,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:24:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-06 22:24:51,924 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-06 22:24:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:24:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:24:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-06 22:24:51,929 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-06 22:24:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:24:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-06 22:24:51,930 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-06 22:24:51,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:24:51,931 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2023-11-06 22:24:51,931 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2023-11-06 22:24:51,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:24:52,352 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:24:52,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:24:54,065 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:24:54,076 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:24:54,077 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:24:54,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:54 BoogieIcfgContainer [2023-11-06 22:24:54,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:24:54,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:24:54,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:24:54,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:24:54,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:24:48" (1/3) ... [2023-11-06 22:24:54,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e517949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:54, skipping insertion in model container [2023-11-06 22:24:54,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:51" (2/3) ... [2023-11-06 22:24:54,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e517949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:54, skipping insertion in model container [2023-11-06 22:24:54,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:54" (3/3) ... [2023-11-06 22:24:54,091 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2023-11-06 22:24:54,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:24:54,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:24:54,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:24:54,206 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=LoopsAndPotentialCycles, 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;@43fb9d58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:24:54,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:24:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 96 states have internal predecessors, (118), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-06 22:24:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 22:24:54,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:54,232 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:54,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:24:54,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1909174226, now seen corresponding path program 1 times [2023-11-06 22:24:54,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:54,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287042590] [2023-11-06 22:24:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:54,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:24:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:24:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:24:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:24:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:24:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:24:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:24:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:24:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:24:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:24:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:24:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:24:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:24:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:24:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-06 22:24:55,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:55,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287042590] [2023-11-06 22:24:55,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287042590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:55,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:55,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:55,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183507035] [2023-11-06 22:24:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:55,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:55,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:55,496 INFO L87 Difference]: Start difference. First operand has 145 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 96 states have internal predecessors, (118), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:24:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:56,029 INFO L93 Difference]: Finished difference Result 286 states and 401 transitions. [2023-11-06 22:24:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:56,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2023-11-06 22:24:56,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:56,046 INFO L225 Difference]: With dead ends: 286 [2023-11-06 22:24:56,046 INFO L226 Difference]: Without dead ends: 140 [2023-11-06 22:24:56,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:56,067 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 76 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:56,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 143 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:24:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-06 22:24:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-06 22:24:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 92 states have internal predecessors, (111), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:24:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2023-11-06 22:24:56,143 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 96 [2023-11-06 22:24:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:56,144 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2023-11-06 22:24:56,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:24:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2023-11-06 22:24:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 22:24:56,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:56,158 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:56,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:24:56,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:24:56,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:56,159 INFO L85 PathProgramCache]: Analyzing trace with hash 801930454, now seen corresponding path program 1 times [2023-11-06 22:24:56,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:56,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295956832] [2023-11-06 22:24:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:56,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:24:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:24:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:24:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:24:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:24:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:24:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:24:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:24:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:24:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:24:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:24:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:24:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:24:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:24:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-06 22:24:57,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:57,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295956832] [2023-11-06 22:24:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295956832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:57,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19662202] [2023-11-06 22:24:57,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:57,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:57,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:57,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:57,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:24:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:58,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:24:58,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-06 22:24:58,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:58,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19662202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:58,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:24:58,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-06 22:24:58,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859109857] [2023-11-06 22:24:58,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:58,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:58,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:58,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:58,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:24:58,251 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:24:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:58,575 INFO L93 Difference]: Finished difference Result 258 states and 343 transitions. [2023-11-06 22:24:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 96 [2023-11-06 22:24:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:58,581 INFO L225 Difference]: With dead ends: 258 [2023-11-06 22:24:58,581 INFO L226 Difference]: Without dead ends: 143 [2023-11-06 22:24:58,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:24:58,584 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 207 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:58,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 529 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:24:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-06 22:24:58,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-06 22:24:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 95 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-06 22:24:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 188 transitions. [2023-11-06 22:24:58,610 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 188 transitions. Word has length 96 [2023-11-06 22:24:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:58,611 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 188 transitions. [2023-11-06 22:24:58,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:24:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 188 transitions. [2023-11-06 22:24:58,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-06 22:24:58,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:58,616 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:58,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:58,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:24:58,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:24:58,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1854922249, now seen corresponding path program 1 times [2023-11-06 22:24:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143570129] [2023-11-06 22:24:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:58,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:24:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:24:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:24:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:24:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:24:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:24:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:24:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:24:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:24:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:24:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:24:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:24:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:24:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:24:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-06 22:24:59,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:59,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143570129] [2023-11-06 22:24:59,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143570129] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:59,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569545747] [2023-11-06 22:24:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:59,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:59,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:59,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:59,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:25:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:00,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:25:00,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 22:25:00,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:00,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569545747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:00,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:25:00,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-06 22:25:00,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341177613] [2023-11-06 22:25:00,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:00,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:25:00,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:00,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:25:00,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:00,256 INFO L87 Difference]: Start difference. First operand 143 states and 188 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:25:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:00,302 INFO L93 Difference]: Finished difference Result 271 states and 368 transitions. [2023-11-06 22:25:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:25:00,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2023-11-06 22:25:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:00,306 INFO L225 Difference]: With dead ends: 271 [2023-11-06 22:25:00,306 INFO L226 Difference]: Without dead ends: 153 [2023-11-06 22:25:00,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:25:00,308 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 29 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:00,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 527 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:25:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-06 22:25:00,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2023-11-06 22:25:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 97 states have internal predecessors, (115), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-06 22:25:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 190 transitions. [2023-11-06 22:25:00,327 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 190 transitions. Word has length 102 [2023-11-06 22:25:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:00,328 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 190 transitions. [2023-11-06 22:25:00,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:25:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 190 transitions. [2023-11-06 22:25:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-06 22:25:00,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:00,331 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:00,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:00,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:25:00,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:25:00,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:00,543 INFO L85 PathProgramCache]: Analyzing trace with hash -53535541, now seen corresponding path program 1 times [2023-11-06 22:25:00,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:00,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310609905] [2023-11-06 22:25:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:00,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:25:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:25:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:25:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:25:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:25:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:25:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:25:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:25:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:25:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:25:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:25:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:25:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-06 22:25:01,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:01,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310609905] [2023-11-06 22:25:01,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310609905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:01,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558915520] [2023-11-06 22:25:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:01,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:01,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:01,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:01,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:25:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:02,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:25:02,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:25:02,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:02,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558915520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:02,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:25:02,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-06 22:25:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883096968] [2023-11-06 22:25:02,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:02,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:25:02,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:25:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:25:02,301 INFO L87 Difference]: Start difference. First operand 145 states and 190 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-06 22:25:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:02,572 INFO L93 Difference]: Finished difference Result 257 states and 338 transitions. [2023-11-06 22:25:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:02,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 102 [2023-11-06 22:25:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:02,580 INFO L225 Difference]: With dead ends: 257 [2023-11-06 22:25:02,580 INFO L226 Difference]: Without dead ends: 145 [2023-11-06 22:25:02,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:25:02,586 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 208 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:02,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 549 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:25:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-06 22:25:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-06 22:25:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 97 states have internal predecessors, (115), 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) [2023-11-06 22:25:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 189 transitions. [2023-11-06 22:25:02,612 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 189 transitions. Word has length 102 [2023-11-06 22:25:02,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:02,612 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 189 transitions. [2023-11-06 22:25:02,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-06 22:25:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 189 transitions. [2023-11-06 22:25:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:25:02,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:02,615 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:02,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:02,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:02,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:25:02,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash -428496128, now seen corresponding path program 2 times [2023-11-06 22:25:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:02,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382663224] [2023-11-06 22:25:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:02,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:25:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:25:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:25:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:25:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:25:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:25:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:25:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:25:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:25:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:25:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:25:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 22:25:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:25:03,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382663224] [2023-11-06 22:25:03,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382663224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557633518] [2023-11-06 22:25:03,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:03,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:03,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:03,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:03,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:25:04,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:04,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:04,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:25:04,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:25:05,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:05,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557633518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:05,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:25:05,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2023-11-06 22:25:05,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823217830] [2023-11-06 22:25:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:05,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:25:05,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:25:05,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:25:05,046 INFO L87 Difference]: Start difference. First operand 145 states and 189 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-06 22:25:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:05,453 INFO L93 Difference]: Finished difference Result 238 states and 312 transitions. [2023-11-06 22:25:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:25:05,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 108 [2023-11-06 22:25:05,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:05,456 INFO L225 Difference]: With dead ends: 238 [2023-11-06 22:25:05,456 INFO L226 Difference]: Without dead ends: 142 [2023-11-06 22:25:05,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:25:05,458 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 214 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:05,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 770 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:25:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-06 22:25:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2023-11-06 22:25:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 94 states have internal predecessors, (112), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:25:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 183 transitions. [2023-11-06 22:25:05,475 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 183 transitions. Word has length 108 [2023-11-06 22:25:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:05,475 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 183 transitions. [2023-11-06 22:25:05,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-06 22:25:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 183 transitions. [2023-11-06 22:25:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:25:05,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:05,478 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:05,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:25:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:05,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:25:05,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash 340737878, now seen corresponding path program 1 times [2023-11-06 22:25:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:05,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211919740] [2023-11-06 22:25:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:25:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:25:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:25:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:25:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:25:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:25:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:25:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:25:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:25:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:25:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:25:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 22:25:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-06 22:25:07,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:07,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211919740] [2023-11-06 22:25:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211919740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:07,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:07,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:25:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091461896] [2023-11-06 22:25:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:07,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:25:07,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:07,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:25:07,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:25:07,038 INFO L87 Difference]: Start difference. First operand 142 states and 183 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:25:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:07,781 INFO L93 Difference]: Finished difference Result 154 states and 200 transitions. [2023-11-06 22:25:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:25:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2023-11-06 22:25:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:07,783 INFO L225 Difference]: With dead ends: 154 [2023-11-06 22:25:07,784 INFO L226 Difference]: Without dead ends: 152 [2023-11-06 22:25:07,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:25:07,785 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 105 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:07,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 571 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:25:07,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-06 22:25:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2023-11-06 22:25:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 101 states have internal predecessors, (118), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2023-11-06 22:25:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2023-11-06 22:25:07,816 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 120 [2023-11-06 22:25:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:07,817 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2023-11-06 22:25:07,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:25:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2023-11-06 22:25:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:25:07,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:07,819 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:07,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:25:07,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:25:07,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1732694240, now seen corresponding path program 1 times [2023-11-06 22:25:07,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:07,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350612865] [2023-11-06 22:25:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:07,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:25:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:25:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:25:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:25:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:25:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:25:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:25:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:25:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:25:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:25:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:25:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 22:25:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-06 22:25:09,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:09,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350612865] [2023-11-06 22:25:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350612865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:09,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:25:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511773075] [2023-11-06 22:25:09,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:09,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:25:09,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:09,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:25:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:25:09,367 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:25:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:10,081 INFO L93 Difference]: Finished difference Result 304 states and 415 transitions. [2023-11-06 22:25:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:10,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 124 [2023-11-06 22:25:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:10,084 INFO L225 Difference]: With dead ends: 304 [2023-11-06 22:25:10,085 INFO L226 Difference]: Without dead ends: 178 [2023-11-06 22:25:10,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:25:10,086 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 140 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:10,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 327 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:25:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-06 22:25:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 158. [2023-11-06 22:25:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 108 states have internal predecessors, (127), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2023-11-06 22:25:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 206 transitions. [2023-11-06 22:25:10,102 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 206 transitions. Word has length 124 [2023-11-06 22:25:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:10,103 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 206 transitions. [2023-11-06 22:25:10,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:25:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 206 transitions. [2023-11-06 22:25:10,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:25:10,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:10,105 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:10,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:25:10,106 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:25:10,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:10,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1990859678, now seen corresponding path program 1 times [2023-11-06 22:25:10,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:10,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736621634] [2023-11-06 22:25:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:10,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:25:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:25:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:25:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:25:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:25:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:25:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:25:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:25:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:25:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:25:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:25:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 22:25:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-06 22:25:12,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736621634] [2023-11-06 22:25:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736621634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642493171] [2023-11-06 22:25:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:12,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:12,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:12,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:12,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:25:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:12,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-06 22:25:12,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:13,119 INFO L351 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 [2023-11-06 22:25:13,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:13,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 22:25:13,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:13,841 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 22:25:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-06 22:25:14,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:14,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642493171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:14,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:25:14,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2023-11-06 22:25:14,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737453540] [2023-11-06 22:25:14,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:14,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:25:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:14,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:25:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:25:14,297 INFO L87 Difference]: Start difference. First operand 158 states and 206 transitions. Second operand has 16 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-06 22:25:17,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:19,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:21,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:23,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:25,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:27,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:30,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:32,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:32,920 INFO L93 Difference]: Finished difference Result 409 states and 541 transitions. [2023-11-06 22:25:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:25:32,921 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 124 [2023-11-06 22:25:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:32,924 INFO L225 Difference]: With dead ends: 409 [2023-11-06 22:25:32,924 INFO L226 Difference]: Without dead ends: 276 [2023-11-06 22:25:32,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 128 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:25:32,926 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 191 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 49 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:32,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1595 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1093 Invalid, 8 Unknown, 0 Unchecked, 18.2s Time] [2023-11-06 22:25:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-06 22:25:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 273. [2023-11-06 22:25:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 185 states have (on average 1.2162162162162162) internal successors, (225), 190 states have internal predecessors, (225), 63 states have call successors, (63), 22 states have call predecessors, (63), 24 states have return successors, (70), 60 states have call predecessors, (70), 61 states have call successors, (70) [2023-11-06 22:25:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 358 transitions. [2023-11-06 22:25:32,960 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 358 transitions. Word has length 124 [2023-11-06 22:25:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:32,961 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 358 transitions. [2023-11-06 22:25:32,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-06 22:25:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 358 transitions. [2023-11-06 22:25:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:25:32,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:32,965 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:32,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:25:33,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:33,175 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:25:33,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash -917418289, now seen corresponding path program 1 times [2023-11-06 22:25:33,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:33,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877488199] [2023-11-06 22:25:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:25:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:25:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:25:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:25:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:25:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:25:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 22:25:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-06 22:25:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:25:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:25:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 22:25:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 22:25:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-06 22:25:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-06 22:25:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-06 22:25:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877488199] [2023-11-06 22:25:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877488199] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570933536] [2023-11-06 22:25:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:35,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:35,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:35,210 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:35,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:25:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:35,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-06 22:25:35,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:35,911 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:25:36,233 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-06 22:25:36,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:36,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:25:36,385 INFO L351 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 [2023-11-06 22:25:36,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:36,996 INFO L322 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2023-11-06 22:25:36,996 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 28 [2023-11-06 22:25:37,020 INFO L322 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-11-06 22:25:37,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 1 [2023-11-06 22:25:37,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-06 22:25:37,423 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-06 22:25:37,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:25:37,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2023-11-06 22:25:37,557 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-06 22:25:37,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:25:39,602 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_10| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_10|) 8))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_10|) (not (= .cse0 0))))) is different from true [2023-11-06 22:25:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 116 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 1 not checked. [2023-11-06 22:25:42,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:52,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570933536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:52,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:52,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19] total 28 [2023-11-06 22:25:52,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129711253] [2023-11-06 22:25:52,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:52,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:25:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:25:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1004, Unknown=7, NotChecked=64, Total=1190 [2023-11-06 22:25:52,634 INFO L87 Difference]: Start difference. First operand 273 states and 358 transitions. Second operand has 28 states, 26 states have (on average 5.538461538461538) internal successors, (144), 24 states have internal predecessors, (144), 10 states have call successors, (33), 9 states have call predecessors, (33), 8 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) [2023-11-06 22:25:54,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:56,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:25:58,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:05,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:09,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:11,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:13,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:16,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:18,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:20,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:22,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:24,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:27,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:29,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:31,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:33,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:35,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:38,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:42,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:44,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:46,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:48,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:49,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:49,807 INFO L93 Difference]: Finished difference Result 784 states and 1011 transitions. [2023-11-06 22:26:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-06 22:26:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.538461538461538) internal successors, (144), 24 states have internal predecessors, (144), 10 states have call successors, (33), 9 states have call predecessors, (33), 8 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) Word has length 135 [2023-11-06 22:26:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:49,812 INFO L225 Difference]: With dead ends: 784 [2023-11-06 22:26:49,813 INFO L226 Difference]: Without dead ends: 554 [2023-11-06 22:26:49,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 228 SyntacticMatches, 9 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=831, Invalid=4276, Unknown=9, NotChecked=140, Total=5256 [2023-11-06 22:26:49,817 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 497 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 3190 mSolverCounterSat, 172 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3190 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 50.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:49,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 871 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3190 Invalid, 22 Unknown, 353 Unchecked, 50.2s Time] [2023-11-06 22:26:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-11-06 22:26:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 401. [2023-11-06 22:26:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 310 states have (on average 1.2419354838709677) internal successors, (385), 314 states have internal predecessors, (385), 58 states have call successors, (58), 31 states have call predecessors, (58), 32 states have return successors, (69), 55 states have call predecessors, (69), 57 states have call successors, (69) [2023-11-06 22:26:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 512 transitions. [2023-11-06 22:26:49,865 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 512 transitions. Word has length 135 [2023-11-06 22:26:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:49,866 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 512 transitions. [2023-11-06 22:26:49,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.538461538461538) internal successors, (144), 24 states have internal predecessors, (144), 10 states have call successors, (33), 9 states have call predecessors, (33), 8 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) [2023-11-06 22:26:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 512 transitions. [2023-11-06 22:26:49,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-06 22:26:49,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:49,870 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:49,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:50,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:50,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash -869130922, now seen corresponding path program 1 times [2023-11-06 22:26:50,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:50,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692313374] [2023-11-06 22:26:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:50,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:26:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:26:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:26:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:26:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:26:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:26:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:26:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:26:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 22:26:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:26:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:26:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:26:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 22:26:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-06 22:26:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-06 22:26:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692313374] [2023-11-06 22:26:51,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692313374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:51,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99179175] [2023-11-06 22:26:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:51,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:51,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:51,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:51,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:26:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:52,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-06 22:26:52,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:52,255 INFO L351 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 [2023-11-06 22:26:53,091 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:26:53,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2023-11-06 22:26:53,098 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-06 22:26:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-06 22:26:53,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99179175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:53,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:26:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [10] total 24 [2023-11-06 22:26:53,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421245833] [2023-11-06 22:26:53,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:53,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:26:53,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:26:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:26:53,152 INFO L87 Difference]: Start difference. First operand 401 states and 512 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-06 22:26:55,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:26:58,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:00,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:02,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:04,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:06,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:08,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:11,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:13,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:15,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:17,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:19,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:21,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:23,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:25,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:27,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:29,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:31,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:33,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:35,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:37,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:39,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:41,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:43,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:45,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:47,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:50,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:52,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:54,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:56,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:27:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:56,471 INFO L93 Difference]: Finished difference Result 707 states and 894 transitions. [2023-11-06 22:27:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:27:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 136 [2023-11-06 22:27:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:56,475 INFO L225 Difference]: With dead ends: 707 [2023-11-06 22:27:56,475 INFO L226 Difference]: Without dead ends: 454 [2023-11-06 22:27:56,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 145 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:27:56,478 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 292 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 34 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:56,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 966 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 927 Invalid, 30 Unknown, 0 Unchecked, 62.8s Time] [2023-11-06 22:27:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-06 22:27:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 424. [2023-11-06 22:27:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 329 states have (on average 1.2340425531914894) internal successors, (406), 333 states have internal predecessors, (406), 59 states have call successors, (59), 33 states have call predecessors, (59), 35 states have return successors, (71), 57 states have call predecessors, (71), 58 states have call successors, (71) [2023-11-06 22:27:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 536 transitions. [2023-11-06 22:27:56,527 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 536 transitions. Word has length 136 [2023-11-06 22:27:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:56,528 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 536 transitions. [2023-11-06 22:27:56,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-06 22:27:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 536 transitions. [2023-11-06 22:27:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-06 22:27:56,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:56,532 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:56,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:56,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:56,743 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:27:56,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2036542360, now seen corresponding path program 1 times [2023-11-06 22:27:56,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:56,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968492249] [2023-11-06 22:27:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:56,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:00,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:28:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:28:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:28:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:28:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:28:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:28:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:28:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:28:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 22:28:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:28:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:28:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:28:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 22:28:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-06 22:28:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-06 22:28:01,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968492249] [2023-11-06 22:28:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968492249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:01,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688329390] [2023-11-06 22:28:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:01,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:01,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:01,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:28:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:02,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-06 22:28:02,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:02,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:28:02,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-06 22:28:02,572 WARN L861 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (<= (+ |bounded_malloc_#res.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| (select |c_#valid| |bounded_malloc_#res.base|))))) is different from true [2023-11-06 22:28:02,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:28:02,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:28:03,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:28:03,455 INFO L322 Elim1Store]: treesize reduction 92, result has 22.7 percent of original size [2023-11-06 22:28:03,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 39 [2023-11-06 22:28:03,500 INFO L322 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-06 22:28:03,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-06 22:28:03,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:28:03,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:28:03,564 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-06 22:28:03,564 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 22:28:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 100 proven. 23 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:28:04,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:04,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688329390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:04,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:28:04,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 36 [2023-11-06 22:28:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423200215] [2023-11-06 22:28:04,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:04,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-06 22:28:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:04,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-06 22:28:04,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1403, Unknown=2, NotChecked=76, Total=1640 [2023-11-06 22:28:04,756 INFO L87 Difference]: Start difference. First operand 424 states and 536 transitions. Second operand has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 33 states have internal predecessors, (147), 11 states have call successors, (29), 8 states have call predecessors, (29), 10 states have return successors, (27), 9 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-06 22:28:07,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:28:15,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:15,089 INFO L93 Difference]: Finished difference Result 1017 states and 1287 transitions. [2023-11-06 22:28:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-06 22:28:15,090 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 33 states have internal predecessors, (147), 11 states have call successors, (29), 8 states have call predecessors, (29), 10 states have return successors, (27), 9 states have call predecessors, (27), 11 states have call successors, (27) Word has length 136 [2023-11-06 22:28:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:15,095 INFO L225 Difference]: With dead ends: 1017 [2023-11-06 22:28:15,096 INFO L226 Difference]: Without dead ends: 682 [2023-11-06 22:28:15,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 240 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=723, Invalid=4681, Unknown=2, NotChecked=144, Total=5550 [2023-11-06 22:28:15,100 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 842 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 3294 mSolverCounterSat, 195 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 3865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3294 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:15,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 948 Invalid, 3865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 3294 Invalid, 1 Unknown, 375 Unchecked, 8.2s Time] [2023-11-06 22:28:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-06 22:28:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 497. [2023-11-06 22:28:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 394 states have (on average 1.2309644670050761) internal successors, (485), 401 states have internal predecessors, (485), 61 states have call successors, (61), 36 states have call predecessors, (61), 41 states have return successors, (76), 59 states have call predecessors, (76), 60 states have call successors, (76) [2023-11-06 22:28:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 622 transitions. [2023-11-06 22:28:15,162 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 622 transitions. Word has length 136 [2023-11-06 22:28:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:15,162 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 622 transitions. [2023-11-06 22:28:15,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 33 states have internal predecessors, (147), 11 states have call successors, (29), 8 states have call predecessors, (29), 10 states have return successors, (27), 9 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-06 22:28:15,163 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 622 transitions. [2023-11-06 22:28:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-06 22:28:15,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:15,166 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:15,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:15,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:15,376 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:15,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1115922470, now seen corresponding path program 2 times [2023-11-06 22:28:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:15,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413639194] [2023-11-06 22:28:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:15,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:28:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:28:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:28:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:28:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:28:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:28:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:28:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:28:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 22:28:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:28:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:28:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:28:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 22:28:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-06 22:28:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-06 22:28:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413639194] [2023-11-06 22:28:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413639194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400382732] [2023-11-06 22:28:19,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:28:19,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:19,204 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:19,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20926556-2b3c-4b60-9fcf-5be9bc1f30c7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:28:20,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:28:20,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:28:20,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 87 conjunts are in the unsatisfiable core [2023-11-06 22:28:20,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:20,858 INFO L322 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-06 22:28:20,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2023-11-06 22:28:21,776 INFO L322 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2023-11-06 22:28:21,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 44 [2023-11-06 22:28:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 58 proven. 48 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-06 22:28:23,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:24,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400382732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:24,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:28:24,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 36 [2023-11-06 22:28:24,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346830103] [2023-11-06 22:28:24,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:24,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-06 22:28:24,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:24,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-06 22:28:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2023-11-06 22:28:24,331 INFO L87 Difference]: Start difference. First operand 497 states and 622 transitions. Second operand has 36 states, 31 states have (on average 4.064516129032258) internal successors, (126), 31 states have internal predecessors, (126), 17 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 13 states have call predecessors, (28), 15 states have call successors, (28)