./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 983481f5e23e9dbaf95892c19981dd4a39c2fab33de5cb70c70e0ce781cf6fc6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:47:30,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:47:30,944 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 10:47:30,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:47:30,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:47:31,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:47:31,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:47:31,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:47:31,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:47:31,015 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:47:31,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:47:31,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:47:31,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:47:31,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:47:31,021 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:47:31,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:47:31,022 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:47:31,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:47:31,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:47:31,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:47:31,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:47:31,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:47:31,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:47:31,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:47:31,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:47:31,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:47:31,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:47:31,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:47:31,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:47:31,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:47:31,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:47:31,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:47:31,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:47:31,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:47:31,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:47:31,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:47:31,036 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:47:31,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:47:31,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:47:31,037 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_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 983481f5e23e9dbaf95892c19981dd4a39c2fab33de5cb70c70e0ce781cf6fc6 [2023-11-26 10:47:31,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:47:31,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:47:31,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:47:31,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:47:31,465 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:47:31,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness_negated.i [2023-11-26 10:47:34,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:47:35,752 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:47:35,753 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness_negated.i [2023-11-26 10:47:35,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/data/960268ed1/04c1a42e936f41178a15fe0eb52f6cbd/FLAGcb85fc021 [2023-11-26 10:47:35,840 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/data/960268ed1/04c1a42e936f41178a15fe0eb52f6cbd [2023-11-26 10:47:35,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:47:35,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:47:35,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:47:35,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:47:35,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:47:35,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:47:35" (1/1) ... [2023-11-26 10:47:35,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@850983e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:35, skipping insertion in model container [2023-11-26 10:47:35,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:47:35" (1/1) ... [2023-11-26 10:47:36,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:47:36,345 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_a0b7412a-0f4c-4f25-85be-319e79a658cb/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness_negated.i[4492,4505] [2023-11-26 10:47:36,356 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_a0b7412a-0f4c-4f25-85be-319e79a658cb/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness_negated.i[4552,4565] [2023-11-26 10:47:37,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:37,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:37,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:37,841 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:37,843 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:37,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:37,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:37,889 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:37,892 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:38,574 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 10:47:38,576 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 10:47:38,578 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 10:47:38,580 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 10:47:38,582 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 10:47:38,583 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 10:47:38,584 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 10:47:38,585 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 10:47:38,586 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 10:47:38,588 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 10:47:39,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:47:39,371 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:47:39,403 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_a0b7412a-0f4c-4f25-85be-319e79a658cb/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness_negated.i[4492,4505] [2023-11-26 10:47:39,404 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_a0b7412a-0f4c-4f25-85be-319e79a658cb/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness_negated.i[4552,4565] [2023-11-26 10:47:39,487 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,513 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,515 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,521 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,601 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 10:47:39,603 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 10:47:39,604 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 10:47:39,604 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 10:47:39,606 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 10:47:39,607 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 10:47:39,611 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 10:47:39,612 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 10:47:39,613 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 10:47:39,614 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 10:47:39,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-26 10:47:39,755 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,756 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 10:47:39,774 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2023-11-26 10:47:39,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:47:40,087 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,087 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,087 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,087 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,088 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,088 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,088 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,088 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,088 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,089 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,089 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,089 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,089 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,089 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,090 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,090 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,090 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,090 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:40,100 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:47:40,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40 WrapperNode [2023-11-26 10:47:40,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:47:40,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:47:40,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:47:40,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:47:40,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,424 INFO L138 Inliner]: procedures = 689, calls = 2640, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 874 [2023-11-26 10:47:40,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:47:40,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:47:40,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:47:40,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:47:40,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,460 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,661 INFO L175 MemorySlicer]: Split 562 memory accesses to 7 slices as follows [2, 256, 10, 236, 6, 49, 3]. 46 percent of accesses are in the largest equivalence class. The 510 initializations are split as follows [2, 256, 5, 236, 0, 8, 3]. The 6 writes are split as follows [0, 0, 1, 0, 2, 3, 0]. [2023-11-26 10:47:40,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:47:40,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:47:40,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:47:40,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:47:40,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (1/1) ... [2023-11-26 10:47:40,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:47:40,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:40,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:40,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:47:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-26 10:47:40,937 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-26 10:47:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:47:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 10:47:40,938 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 10:47:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2023-11-26 10:47:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2023-11-26 10:47:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2023-11-26 10:47:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2023-11-26 10:47:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2023-11-26 10:47:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2023-11-26 10:47:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#6 [2023-11-26 10:47:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-26 10:47:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-26 10:47:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-26 10:47:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-26 10:47:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-26 10:47:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-26 10:47:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-26 10:47:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-26 10:47:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-26 10:47:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-26 10:47:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-26 10:47:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-26 10:47:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-26 10:47:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-26 10:47:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:47:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:47:40,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:47:40,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:47:40,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:47:40,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 10:47:40,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 10:47:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-26 10:47:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-26 10:47:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-26 10:47:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-26 10:47:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-26 10:47:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-26 10:47:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-26 10:47:40,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-26 10:47:40,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-26 10:47:40,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-26 10:47:40,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-26 10:47:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-26 10:47:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-26 10:47:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-26 10:47:40,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:47:40,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:47:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:47:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:47:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:47:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:47:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:47:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 10:47:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 10:47:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 10:47:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 10:47:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:47:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:47:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 10:47:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 10:47:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-26 10:47:40,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-26 10:47:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-26 10:47:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-26 10:47:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-26 10:47:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-26 10:47:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-26 10:47:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-26 10:47:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-26 10:47:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-26 10:47:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-26 10:47:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-26 10:47:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-26 10:47:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-26 10:47:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-26 10:47:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-26 10:47:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:47:40,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:47:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:47:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:47:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:47:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:47:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 10:47:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 10:47:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 10:47:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 10:47:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-26 10:47:40,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-26 10:47:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 10:47:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 10:47:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 10:47:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 10:47:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 10:47:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 10:47:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 10:47:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 10:47:40,956 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 10:47:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-26 10:47:40,957 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-26 10:47:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:47:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:47:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:47:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:47:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:47:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 10:47:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 10:47:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2023-11-26 10:47:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2023-11-26 10:47:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2023-11-26 10:47:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2023-11-26 10:47:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2023-11-26 10:47:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2023-11-26 10:47:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#6 [2023-11-26 10:47:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:47:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:47:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:47:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:47:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:47:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:47:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 10:47:41,418 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:47:41,437 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:47:43,305 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:47:43,523 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:47:43,523 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:47:43,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:43 BoogieIcfgContainer [2023-11-26 10:47:43,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:47:43,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:47:43,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:47:43,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:47:43,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:47:35" (1/3) ... [2023-11-26 10:47:43,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b827e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:47:43, skipping insertion in model container [2023-11-26 10:47:43,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:40" (2/3) ... [2023-11-26 10:47:43,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b827e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:47:43, skipping insertion in model container [2023-11-26 10:47:43,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:43" (3/3) ... [2023-11-26 10:47:43,537 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_harness_negated.i [2023-11-26 10:47:43,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:47:43,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:47:43,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:47:43,648 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7334c7b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:47:43,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:47:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 74 states have internal predecessors, (96), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-26 10:47:43,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:47:43,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:43,675 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:43,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:43,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash -929985093, now seen corresponding path program 1 times [2023-11-26 10:47:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:43,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72223157] [2023-11-26 10:47:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:43,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:47:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:47:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:47:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 10:47:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 10:47:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 10:47:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-26 10:47:44,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:44,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72223157] [2023-11-26 10:47:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72223157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:44,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:44,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:47:44,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781694691] [2023-11-26 10:47:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:44,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:47:44,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:44,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:47:44,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:44,770 INFO L87 Difference]: Start difference. First operand has 117 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 74 states have internal predecessors, (96), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 10:47:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:45,598 INFO L93 Difference]: Finished difference Result 232 states and 340 transitions. [2023-11-26 10:47:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:47:45,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2023-11-26 10:47:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:45,611 INFO L225 Difference]: With dead ends: 232 [2023-11-26 10:47:45,612 INFO L226 Difference]: Without dead ends: 115 [2023-11-26 10:47:45,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:47:45,621 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 64 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:45,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 115 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:47:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-26 10:47:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-26 10:47:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 73 states have internal predecessors, (93), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:47:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 156 transitions. [2023-11-26 10:47:45,683 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 156 transitions. Word has length 69 [2023-11-26 10:47:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:45,684 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 156 transitions. [2023-11-26 10:47:45,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 10:47:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 156 transitions. [2023-11-26 10:47:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 10:47:45,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:45,689 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:45,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:47:45,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:45,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:45,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2043541949, now seen corresponding path program 1 times [2023-11-26 10:47:45,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:45,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664646761] [2023-11-26 10:47:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:45,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:47:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:47:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:47:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 10:47:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 10:47:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 10:47:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:47:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-26 10:47:46,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:46,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664646761] [2023-11-26 10:47:46,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664646761] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:46,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562354270] [2023-11-26 10:47:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:46,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:46,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:46,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:46,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:47:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:47:47,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:47:47,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:47:47,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562354270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:47,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:47:47,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-26 10:47:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511262292] [2023-11-26 10:47:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:47,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:47:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:47,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:47:47,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:47:47,738 INFO L87 Difference]: Start difference. First operand 115 states and 156 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 10:47:48,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:48,180 INFO L93 Difference]: Finished difference Result 213 states and 295 transitions. [2023-11-26 10:47:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:47:48,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 69 [2023-11-26 10:47:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:48,186 INFO L225 Difference]: With dead ends: 213 [2023-11-26 10:47:48,186 INFO L226 Difference]: Without dead ends: 117 [2023-11-26 10:47:48,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:47:48,189 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 50 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:48,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 348 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:47:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-26 10:47:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-26 10:47:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 75 states have internal predecessors, (94), 32 states have call successors, (32), 10 states have call predecessors, (32), 11 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-11-26 10:47:48,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 160 transitions. [2023-11-26 10:47:48,210 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 160 transitions. Word has length 69 [2023-11-26 10:47:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:48,211 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 160 transitions. [2023-11-26 10:47:48,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 10:47:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 160 transitions. [2023-11-26 10:47:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 10:47:48,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:48,215 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:48,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:48,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:48,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:48,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:48,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1326914286, now seen corresponding path program 1 times [2023-11-26 10:47:48,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:48,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380966698] [2023-11-26 10:47:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:48,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:47:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:47:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:47:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:47:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:47:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:47:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:47:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:47:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-26 10:47:49,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:49,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380966698] [2023-11-26 10:47:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380966698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091589784] [2023-11-26 10:47:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:49,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:49,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:49,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:47:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:49,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:47:50,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-26 10:47:50,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:47:50,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091589784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:50,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:47:50,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-26 10:47:50,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933907326] [2023-11-26 10:47:50,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:50,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:47:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:50,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:47:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:47:50,171 INFO L87 Difference]: Start difference. First operand 117 states and 160 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 10:47:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:50,602 INFO L93 Difference]: Finished difference Result 206 states and 283 transitions. [2023-11-26 10:47:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:47:50,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 75 [2023-11-26 10:47:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:47:50,605 INFO L225 Difference]: With dead ends: 206 [2023-11-26 10:47:50,606 INFO L226 Difference]: Without dead ends: 115 [2023-11-26 10:47:50,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:47:50,608 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 68 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:47:50,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 681 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:47:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-26 10:47:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-26 10:47:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 73 states have internal predecessors, (92), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:47:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 155 transitions. [2023-11-26 10:47:50,624 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 155 transitions. Word has length 75 [2023-11-26 10:47:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:47:50,624 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 155 transitions. [2023-11-26 10:47:50,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 10:47:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 155 transitions. [2023-11-26 10:47:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-26 10:47:50,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:47:50,627 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:50,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:50,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 10:47:50,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:47:50,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2042127182, now seen corresponding path program 1 times [2023-11-26 10:47:50,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:50,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402847691] [2023-11-26 10:47:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:47:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:47:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:47:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:47:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:47:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:47:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:47:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:47:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:47:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 10:47:54,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:54,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402847691] [2023-11-26 10:47:54,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402847691] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:54,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870206267] [2023-11-26 10:47:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:54,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:54,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:54,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:54,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:47:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-26 10:47:55,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:55,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 10:47:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-26 10:47:56,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:47:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870206267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:56,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:47:56,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2023-11-26 10:47:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117828985] [2023-11-26 10:47:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:56,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:47:56,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:47:56,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:47:56,032 INFO L87 Difference]: Start difference. First operand 115 states and 155 transitions. Second operand has 12 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 10:48:00,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 10:48:05,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 10:48:09,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 10:48:13,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-26 10:48:14,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:14,502 INFO L93 Difference]: Finished difference Result 283 states and 384 transitions. [2023-11-26 10:48:14,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:48:14,503 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 87 [2023-11-26 10:48:14,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:14,506 INFO L225 Difference]: With dead ends: 283 [2023-11-26 10:48:14,506 INFO L226 Difference]: Without dead ends: 187 [2023-11-26 10:48:14,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:48:14,508 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 176 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 25 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:14,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 855 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 462 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2023-11-26 10:48:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-26 10:48:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2023-11-26 10:48:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 120 states have (on average 1.2833333333333334) internal successors, (154), 123 states have internal predecessors, (154), 47 states have call successors, (47), 15 states have call predecessors, (47), 17 states have return successors, (49), 46 states have call predecessors, (49), 45 states have call successors, (49) [2023-11-26 10:48:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 250 transitions. [2023-11-26 10:48:14,536 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 250 transitions. Word has length 87 [2023-11-26 10:48:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:14,537 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 250 transitions. [2023-11-26 10:48:14,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 10:48:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 250 transitions. [2023-11-26 10:48:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-26 10:48:14,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:14,539 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:14,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:14,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:14,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:14,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1029421162, now seen corresponding path program 1 times [2023-11-26 10:48:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:14,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575640374] [2023-11-26 10:48:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:14,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:48:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:48:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:48:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:48:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:48:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:48:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 10:48:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 10:48:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:48:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:48:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:48:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-26 10:48:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575640374] [2023-11-26 10:48:16,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575640374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967679689] [2023-11-26 10:48:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:16,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:16,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:16,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:16,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:48:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:17,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:48:17,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:48:17,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:17,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967679689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:17,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:17,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-11-26 10:48:17,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053878601] [2023-11-26 10:48:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:17,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:48:17,558 INFO L87 Difference]: Start difference. First operand 185 states and 250 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 10:48:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:18,718 INFO L93 Difference]: Finished difference Result 382 states and 532 transitions. [2023-11-26 10:48:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:48:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2023-11-26 10:48:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:18,723 INFO L225 Difference]: With dead ends: 382 [2023-11-26 10:48:18,724 INFO L226 Difference]: Without dead ends: 216 [2023-11-26 10:48:18,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:48:18,727 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 39 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:18,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 505 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:48:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-26 10:48:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 195. [2023-11-26 10:48:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 133 states have internal predecessors, (168), 47 states have call successors, (47), 15 states have call predecessors, (47), 17 states have return successors, (49), 46 states have call predecessors, (49), 45 states have call successors, (49) [2023-11-26 10:48:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 264 transitions. [2023-11-26 10:48:18,782 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 264 transitions. Word has length 91 [2023-11-26 10:48:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:18,784 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 264 transitions. [2023-11-26 10:48:18,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 10:48:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 264 transitions. [2023-11-26 10:48:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-26 10:48:18,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:18,799 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:18,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:19,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:19,018 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:19,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2004628884, now seen corresponding path program 1 times [2023-11-26 10:48:19,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:19,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519415424] [2023-11-26 10:48:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:19,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:48:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:48:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:48:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:48:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:48:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:48:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 10:48:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 10:48:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:48:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:48:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:48:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-26 10:48:20,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:20,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519415424] [2023-11-26 10:48:20,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519415424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650529] [2023-11-26 10:48:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:20,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:20,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:20,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0b7412a-0f4c-4f25-85be-319e79a658cb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:48:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:21,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 2609 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-26 10:48:21,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:48:21,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:21,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:21,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-26 10:48:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810885132] [2023-11-26 10:48:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:21,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:48:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:21,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:48:21,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:48:21,470 INFO L87 Difference]: Start difference. First operand 195 states and 264 transitions. Second operand has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)