./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl --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 2565ed6fac7ebe9fd7c8e36ab3df193f840d683a34b5a89585eb649e5fb15d5f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:10:26,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:10:26,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:10:26,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:10:26,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:10:26,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:10:26,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:10:26,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:10:26,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:10:26,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:10:26,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:10:26,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:10:26,640 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:10:26,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:10:26,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:10:26,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:10:26,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:10:26,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:10:26,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:10:26,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:10:26,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:10:26,645 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:10:26,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:10:26,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:10:26,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:10:26,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:10:26,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:10:26,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:10:26,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:10:26,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:10:26,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:10:26,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:10:26,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:10:26,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:10:26,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:10:26,651 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:10:26,651 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_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2565ed6fac7ebe9fd7c8e36ab3df193f840d683a34b5a89585eb649e5fb15d5f [2023-11-12 02:10:26,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:10:27,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:10:27,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:10:27,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:10:27,006 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:10:27,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i [2023-11-12 02:10:30,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:10:30,772 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:10:30,772 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i [2023-11-12 02:10:30,828 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/data/0afd36fb8/15d34c4ad5f64d8d832d15f2bf844815/FLAG1eef5b34e [2023-11-12 02:10:30,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/data/0afd36fb8/15d34c4ad5f64d8d832d15f2bf844815 [2023-11-12 02:10:30,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:10:30,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:10:30,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:10:30,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:10:30,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:10:30,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:10:30" (1/1) ... [2023-11-12 02:10:30,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3045177b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:30, skipping insertion in model container [2023-11-12 02:10:30,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:10:30" (1/1) ... [2023-11-12 02:10:31,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:10:31,432 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_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i[4489,4502] [2023-11-12 02:10:31,441 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_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i[4549,4562] [2023-11-12 02:10:32,530 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:32,532 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:32,533 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:32,535 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:32,537 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:32,567 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:32,577 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:32,579 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:32,582 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,018 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 02:10:33,020 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 02:10:33,021 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 02:10:33,023 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 02:10:33,024 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 02:10:33,025 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 02:10:33,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 02:10:33,027 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 02:10:33,027 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 02:10:33,028 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 02:10:33,421 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,421 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:10:33,575 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:10:33,588 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_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i[4489,4502] [2023-11-12 02:10:33,599 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_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i[4549,4562] [2023-11-12 02:10:33,632 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,632 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,633 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,633 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,634 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,640 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,640 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,641 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,642 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,721 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 02:10:33,762 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 02:10:33,763 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 02:10:33,764 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 02:10:33,765 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 02:10:33,766 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 02:10:33,766 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 02:10:33,767 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 02:10:33,767 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 02:10:33,768 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 02:10:33,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8245] [2023-11-12 02:10:33,867 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,868 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:10:33,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8731-8742] [2023-11-12 02:10:33,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:10:34,229 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,230 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,232 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,235 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,236 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,237 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,238 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,238 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,238 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,238 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,239 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,239 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,240 WARN L672 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,240 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,241 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,241 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,241 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,242 WARN L672 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:10:34,250 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:10:34,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34 WrapperNode [2023-11-12 02:10:34,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:10:34,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:10:34,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:10:34,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:10:34,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,500 INFO L138 Inliner]: procedures = 690, calls = 2669, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 887 [2023-11-12 02:10:34,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:10:34,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:10:34,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:10:34,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:10:34,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:10:34,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:10:34,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:10:34,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:10:34,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (1/1) ... [2023-11-12 02:10:34,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:10:34,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:34,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:10:34,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:10:34,681 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-12 02:10:34,681 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-12 02:10:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 02:10:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:10:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 02:10:34,682 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 02:10:34,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:10:34,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 02:10:34,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 02:10:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:10:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:10:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-12 02:10:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-12 02:10:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:10:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-12 02:10:34,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-12 02:10:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:10:34,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:10:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 02:10:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 02:10:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-12 02:10:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-12 02:10:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:10:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:10:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:10:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:10:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-12 02:10:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-12 02:10:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:10:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 02:10:34,689 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 02:10:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 02:10:34,689 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 02:10:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-12 02:10:34,689 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-12 02:10:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:10:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-12 02:10:34,690 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-12 02:10:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:10:35,037 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:10:35,039 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:10:36,938 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:10:36,952 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:10:36,953 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:10:36,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:10:36 BoogieIcfgContainer [2023-11-12 02:10:36,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:10:36,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:10:36,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:10:36,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:10:36,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:10:30" (1/3) ... [2023-11-12 02:10:36,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f2442c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:10:36, skipping insertion in model container [2023-11-12 02:10:36,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:34" (2/3) ... [2023-11-12 02:10:36,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f2442c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:10:36, skipping insertion in model container [2023-11-12 02:10:36,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:10:36" (3/3) ... [2023-11-12 02:10:36,970 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness_negated.i [2023-11-12 02:10:36,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:10:36,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:10:37,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:10:37,083 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;@1810b97d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:10:37,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:10:37,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-12 02:10:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-12 02:10:37,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:37,116 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:37,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:37,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1419889978, now seen corresponding path program 1 times [2023-11-12 02:10:37,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:37,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563712403] [2023-11-12 02:10:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:37,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:10:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:37,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:10:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:10:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:10:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:10:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:10:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:10:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:10:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-12 02:10:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:10:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:10:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:10:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:10:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-12 02:10:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-12 02:10:38,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:38,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563712403] [2023-11-12 02:10:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563712403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:38,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:38,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:10:38,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595930823] [2023-11-12 02:10:38,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:38,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:10:38,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:38,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:10:38,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:10:38,483 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 02:10:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:39,198 INFO L93 Difference]: Finished difference Result 304 states and 439 transitions. [2023-11-12 02:10:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:10:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2023-11-12 02:10:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:39,216 INFO L225 Difference]: With dead ends: 304 [2023-11-12 02:10:39,216 INFO L226 Difference]: Without dead ends: 150 [2023-11-12 02:10:39,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:10:39,236 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 225 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:39,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 172 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:10:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-12 02:10:39,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-11-12 02:10:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-12 02:10:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2023-11-12 02:10:39,334 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 113 [2023-11-12 02:10:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:39,335 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2023-11-12 02:10:39,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 02:10:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2023-11-12 02:10:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-12 02:10:39,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:39,340 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:39,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:10:39,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:39,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash -254215752, now seen corresponding path program 1 times [2023-11-12 02:10:39,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:39,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144077246] [2023-11-12 02:10:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:39,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:10:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:10:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:10:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:10:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:10:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:10:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:10:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:10:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-12 02:10:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:10:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:10:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:10:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:10:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-12 02:10:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-12 02:10:40,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:40,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144077246] [2023-11-12 02:10:40,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144077246] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:10:40,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501928240] [2023-11-12 02:10:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:40,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:10:40,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:40,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:10:40,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:10:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:41,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:10:41,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 02:10:41,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:41,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501928240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:41,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:10:41,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-12 02:10:41,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609580041] [2023-11-12 02:10:41,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:41,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:10:41,362 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-12 02:10:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:41,710 INFO L93 Difference]: Finished difference Result 292 states and 395 transitions. [2023-11-12 02:10:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2023-11-12 02:10:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:41,718 INFO L225 Difference]: With dead ends: 292 [2023-11-12 02:10:41,718 INFO L226 Difference]: Without dead ends: 151 [2023-11-12 02:10:41,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:10:41,720 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 211 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 433 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:10:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-12 02:10:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-12 02:10:41,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2023-11-12 02:10:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2023-11-12 02:10:41,758 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 113 [2023-11-12 02:10:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:41,760 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2023-11-12 02:10:41,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-12 02:10:41,760 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2023-11-12 02:10:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-12 02:10:41,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:41,772 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:41,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:10:41,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:10:41,982 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:41,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1731779843, now seen corresponding path program 1 times [2023-11-12 02:10:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045519586] [2023-11-12 02:10:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:10:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:10:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:10:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:10:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:10:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:10:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:10:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-12 02:10:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:10:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-12 02:10:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:10:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:10:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:10:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-12 02:10:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-12 02:10:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:43,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045519586] [2023-11-12 02:10:43,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045519586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:10:43,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417312298] [2023-11-12 02:10:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:43,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:10:43,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:43,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:10:43,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:10:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:43,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 2779 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:10:43,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-12 02:10:44,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:44,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417312298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:44,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:10:44,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-12 02:10:44,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575293958] [2023-11-12 02:10:44,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:44,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:10:44,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:10:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:10:44,007 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-12 02:10:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:44,511 INFO L93 Difference]: Finished difference Result 247 states and 339 transitions. [2023-11-12 02:10:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:10:44,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 119 [2023-11-12 02:10:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:44,519 INFO L225 Difference]: With dead ends: 247 [2023-11-12 02:10:44,519 INFO L226 Difference]: Without dead ends: 151 [2023-11-12 02:10:44,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:10:44,524 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 212 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:44,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 708 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:10:44,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-12 02:10:44,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-12 02:10:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2023-11-12 02:10:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2023-11-12 02:10:44,569 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 119 [2023-11-12 02:10:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:44,570 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2023-11-12 02:10:44,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-12 02:10:44,571 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2023-11-12 02:10:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-12 02:10:44,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:44,573 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:44,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:10:44,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:10:44,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:44,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1773749607, now seen corresponding path program 2 times [2023-11-12 02:10:44,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:44,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90841100] [2023-11-12 02:10:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:10:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:10:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:10:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:10:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:10:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:10:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:10:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-12 02:10:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:10:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:10:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:10:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:10:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:10:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:10:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-12 02:10:45,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90841100] [2023-11-12 02:10:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90841100] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:10:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906446643] [2023-11-12 02:10:45,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:10:45,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:10:45,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:45,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:10:45,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:10:46,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:10:46,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:10:46,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:10:46,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-12 02:10:46,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:46,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906446643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:46,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:10:46,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-12 02:10:46,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445329811] [2023-11-12 02:10:46,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:46,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:10:46,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:46,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:10:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:10:46,782 INFO L87 Difference]: Start difference. First operand 151 states and 204 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-12 02:10:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:10:47,161 INFO L93 Difference]: Finished difference Result 262 states and 356 transitions. [2023-11-12 02:10:47,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:10:47,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 131 [2023-11-12 02:10:47,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:10:47,165 INFO L225 Difference]: With dead ends: 262 [2023-11-12 02:10:47,165 INFO L226 Difference]: Without dead ends: 148 [2023-11-12 02:10:47,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:10:47,167 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 211 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:10:47,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 583 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:10:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-12 02:10:47,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-12 02:10:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 89 states have internal predecessors, (106), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-12 02:10:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 197 transitions. [2023-11-12 02:10:47,186 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 197 transitions. Word has length 131 [2023-11-12 02:10:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:10:47,187 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 197 transitions. [2023-11-12 02:10:47,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-12 02:10:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 197 transitions. [2023-11-12 02:10:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-12 02:10:47,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:10:47,190 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:47,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:10:47,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-12 02:10:47,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:10:47,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1141887780, now seen corresponding path program 1 times [2023-11-12 02:10:47,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:47,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669161569] [2023-11-12 02:10:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:10:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:10:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:10:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:10:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:10:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:10:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-12 02:10:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-12 02:10:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:10:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:10:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:10:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:10:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:52,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-12 02:10:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:53,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:10:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:53,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:10:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-12 02:10:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-12 02:10:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669161569] [2023-11-12 02:10:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669161569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:10:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023205008] [2023-11-12 02:10:53,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:53,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:10:53,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:53,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:10:53,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:10:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:54,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-12 02:10:54,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:54,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-12 02:10:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-12 02:10:55,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023205008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:55,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:10:55,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 27 [2023-11-12 02:10:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935480683] [2023-11-12 02:10:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:55,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:10:55,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:55,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:10:55,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:10:55,056 INFO L87 Difference]: Start difference. First operand 148 states and 197 transitions. Second operand has 13 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-12 02:10:57,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:10:59,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:11:02,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:11:04,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:11:06,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:11:08,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:11:10,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:11:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:11:10,468 INFO L93 Difference]: Finished difference Result 314 states and 412 transitions. [2023-11-12 02:11:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:11:10,469 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 137 [2023-11-12 02:11:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:11:10,471 INFO L225 Difference]: With dead ends: 314 [2023-11-12 02:11:10,471 INFO L226 Difference]: Without dead ends: 169 [2023-11-12 02:11:10,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2023-11-12 02:11:10,473 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 102 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 20 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:11:10,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1393 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 335 Invalid, 7 Unknown, 0 Unchecked, 15.2s Time] [2023-11-12 02:11:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-12 02:11:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-11-12 02:11:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-12 02:11:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 221 transitions. [2023-11-12 02:11:10,495 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 221 transitions. Word has length 137 [2023-11-12 02:11:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:11:10,496 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 221 transitions. [2023-11-12 02:11:10,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-12 02:11:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 221 transitions. [2023-11-12 02:11:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-12 02:11:10,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:11:10,498 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:10,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:10,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:10,709 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:11:10,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:10,709 INFO L85 PathProgramCache]: Analyzing trace with hash 606207340, now seen corresponding path program 1 times [2023-11-12 02:11:10,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:10,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473382684] [2023-11-12 02:11:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:10,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:11:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:11:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:11:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:11:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:11:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:11:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:11:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-12 02:11:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-12 02:11:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-12 02:11:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:11:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:11:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-12 02:11:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-12 02:11:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-12 02:11:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-12 02:11:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:11:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:11:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:11:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:11:12,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:12,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473382684] [2023-11-12 02:11:12,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473382684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:12,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178024675] [2023-11-12 02:11:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:12,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:12,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:12,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:12,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:11:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:13,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:11:13,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-12 02:11:13,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:13,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178024675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:13,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:13,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-11-12 02:11:13,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980127287] [2023-11-12 02:11:13,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:13,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:11:13,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:13,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:11:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:11:13,666 INFO L87 Difference]: Start difference. First operand 169 states and 221 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 02:11:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:11:14,324 INFO L93 Difference]: Finished difference Result 353 states and 473 transitions. [2023-11-12 02:11:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:11:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2023-11-12 02:11:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:11:14,328 INFO L225 Difference]: With dead ends: 353 [2023-11-12 02:11:14,328 INFO L226 Difference]: Without dead ends: 199 [2023-11-12 02:11:14,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:11:14,330 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 42 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:11:14,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 682 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:11:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-12 02:11:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 179. [2023-11-12 02:11:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 117 states have (on average 1.2222222222222223) internal successors, (143), 118 states have internal predecessors, (143), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-12 02:11:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2023-11-12 02:11:14,373 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 141 [2023-11-12 02:11:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:11:14,374 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2023-11-12 02:11:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 02:11:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2023-11-12 02:11:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-12 02:11:14,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:11:14,379 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:14,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:14,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:11:14,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:11:14,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1791263190, now seen corresponding path program 1 times [2023-11-12 02:11:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:14,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017401952] [2023-11-12 02:11:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:14,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:11:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:11:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-12 02:11:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:11:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:11:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:11:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-12 02:11:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-12 02:11:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-12 02:11:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-12 02:11:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-12 02:11:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:11:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-12 02:11:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-12 02:11:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-12 02:11:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-12 02:11:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:11:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-12 02:11:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:11:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-12 02:11:16,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:16,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017401952] [2023-11-12 02:11:16,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017401952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:11:16,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499543269] [2023-11-12 02:11:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:16,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:16,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:16,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:11:16,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:11:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:16,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-12 02:11:16,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:11:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-12 02:11:16,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:11:16,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499543269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:16,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:11:16,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2023-11-12 02:11:16,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806536553] [2023-11-12 02:11:16,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:16,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:11:16,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:16,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:11:16,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:11:16,897 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-12 02:11:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:11:17,102 INFO L93 Difference]: Finished difference Result 339 states and 446 transitions. [2023-11-12 02:11:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:11:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 141 [2023-11-12 02:11:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:11:17,105 INFO L225 Difference]: With dead ends: 339 [2023-11-12 02:11:17,105 INFO L226 Difference]: Without dead ends: 184 [2023-11-12 02:11:17,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:11:17,107 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 13 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:11:17,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1468 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:11:17,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-12 02:11:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2023-11-12 02:11:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 118 states have internal predecessors, (142), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-12 02:11:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 233 transitions. [2023-11-12 02:11:17,126 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 233 transitions. Word has length 141 [2023-11-12 02:11:17,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:11:17,127 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 233 transitions. [2023-11-12 02:11:17,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-12 02:11:17,127 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 233 transitions. [2023-11-12 02:11:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-12 02:11:17,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:11:17,130 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:17,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:11:17,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61f51e47-d4a5-4f2b-8ff7-9d8c6d2dafce/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:11:17,341 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:11:17,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1545785809, now seen corresponding path program 1 times [2023-11-12 02:11:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633983996] [2023-11-12 02:11:17,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat