./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 df84751ae907cf8e2f81d69c2889b453b5ccdd1cae9e7b45e78c48443104a63e --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:09:59,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:09:59,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:09:59,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:09:59,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:09:59,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:09:59,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:09:59,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:09:59,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:09:59,939 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:09:59,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:09:59,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:09:59,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:09:59,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:09:59,961 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:09:59,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:09:59,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:09:59,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:09:59,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:09:59,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:09:59,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:09:59,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:09:59,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:09:59,965 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:09:59,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:09:59,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:09:59,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:09:59,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:09:59,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:09:59,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:09:59,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:09:59,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:09:59,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:09:59,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:09:59,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:09:59,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:09:59,970 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:09:59,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:09:59,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:09:59,971 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df84751ae907cf8e2f81d69c2889b453b5ccdd1cae9e7b45e78c48443104a63e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:10:00,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:10:00,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:10:00,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:10:00,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:10:00,287 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:10:00,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i [2023-11-23 07:10:01,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:10:02,110 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:10:02,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i [2023-11-23 07:10:02,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d4e8633/0af5d64d670f489fab88336ce9e219e8/FLAG557effc14 [2023-11-23 07:10:02,172 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d4e8633/0af5d64d670f489fab88336ce9e219e8 [2023-11-23 07:10:02,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:10:02,176 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:10:02,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:10:02,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:10:02,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:10:02,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:10:02" (1/1) ... [2023-11-23 07:10:02,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4573557e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:02, skipping insertion in model container [2023-11-23 07:10:02,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:10:02" (1/1) ... [2023-11-23 07:10:02,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:10:02,620 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4499,4512] [2023-11-23 07:10:02,628 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4559,4572] [2023-11-23 07:10:03,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,354 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,355 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,675 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:10:03,676 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:10:03,677 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:10:03,678 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:10:03,679 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:10:03,679 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:10:03,680 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:10:03,681 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:10:03,681 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:10:03,682 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:10:03,926 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,926 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:03,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:10:04,030 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:10:04,046 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4499,4512] [2023-11-23 07:10:04,047 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4559,4572] [2023-11-23 07:10:04,079 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,080 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,081 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,082 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,087 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,090 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,091 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,095 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,146 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:10:04,147 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:10:04,148 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:10:04,153 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:10:04,154 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:10:04,155 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:10:04,156 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:10:04,156 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:10:04,157 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:10:04,157 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:10:04,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-23 07:10:04,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:10:04,314 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2023-11-23 07:10:04,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:10:04,554 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,554 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,554 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,554 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,555 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,555 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,555 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,555 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,555 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,555 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,555 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,556 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,556 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,556 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,556 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,556 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,556 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,556 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:10:04,563 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:10:04,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04 WrapperNode [2023-11-23 07:10:04,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:10:04,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:10:04,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:10:04,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:10:04,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,775 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1022 [2023-11-23 07:10:04,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:10:04,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:10:04,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:10:04,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:10:04,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,895 INFO L188 MemorySlicer]: Split 567 memory accesses to 11 slices as follows [246, 2, 5, 37, 8, 256, 4, 0, 0, 6, 3]. 45 percent of accesses are in the largest equivalence class. The 508 initializations are split as follows [236, 2, 5, 2, 2, 256, 2, 0, 0, 0, 3]. The 15 writes are split as follows [4, 0, 0, 9, 0, 0, 0, 0, 0, 2, 0]. [2023-11-23 07:10:04,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:04,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:05,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:10:05,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:10:05,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:10:05,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:10:05,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (1/1) ... [2023-11-23 07:10:05,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:10:05,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:05,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:10:05,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:10:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-11-23 07:10:05,098 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-11-23 07:10:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 07:10:05,098 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 07:10:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure ntohs [2023-11-23 07:10:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:10:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:10:05,099 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:10:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2023-11-23 07:10:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2023-11-23 07:10:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2023-11-23 07:10:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2023-11-23 07:10:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2023-11-23 07:10:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2023-11-23 07:10:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#6 [2023-11-23 07:10:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#7 [2023-11-23 07:10:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#8 [2023-11-23 07:10:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#9 [2023-11-23 07:10:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#10 [2023-11-23 07:10:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-23 07:10:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-23 07:10:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-23 07:10:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-23 07:10:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-23 07:10:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-23 07:10:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-23 07:10:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-23 07:10:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2023-11-23 07:10:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2023-11-23 07:10:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#10 [2023-11-23 07:10:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-23 07:10:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-23 07:10:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-23 07:10:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-23 07:10:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-23 07:10:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-23 07:10:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-23 07:10:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-23 07:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-23 07:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-23 07:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2023-11-23 07:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:10:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:10:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:10:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:10:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:10:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 07:10:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-23 07:10:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-23 07:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-23 07:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-23 07:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-23 07:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-23 07:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-23 07:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-23 07:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-23 07:10:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-23 07:10:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2023-11-23 07:10:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2023-11-23 07:10:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#10 [2023-11-23 07:10:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-23 07:10:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-23 07:10:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-23 07:10:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-23 07:10:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-23 07:10:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-23 07:10:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-23 07:10:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-23 07:10:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2023-11-23 07:10:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2023-11-23 07:10:05,111 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#10 [2023-11-23 07:10:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:10:05,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:10:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:10:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh16 [2023-11-23 07:10:05,113 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh16 [2023-11-23 07:10:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:10:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:10:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:10:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:10:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:10:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:10:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:10:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:10:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:10:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 07:10:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-23 07:10:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-23 07:10:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:10:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:10:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:10:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:10:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 07:10:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 07:10:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-23 07:10:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-23 07:10:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-23 07:10:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-23 07:10:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-23 07:10:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-23 07:10:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-23 07:10:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-23 07:10:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2023-11-23 07:10:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2023-11-23 07:10:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#10 [2023-11-23 07:10:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-23 07:10:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-23 07:10:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-23 07:10:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-23 07:10:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-23 07:10:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-23 07:10:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-23 07:10:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-23 07:10:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2023-11-23 07:10:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2023-11-23 07:10:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2023-11-23 07:10:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 07:10:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 07:10:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:10:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:10:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:10:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:10:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:10:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-23 07:10:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 07:10:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-23 07:10:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-23 07:10:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:10:05,130 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:10:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:10:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:10:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:10:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:10:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:10:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:10:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:10:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:10:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 07:10:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-23 07:10:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-23 07:10:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2023-11-23 07:10:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2023-11-23 07:10:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#6 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#7 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#8 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#9 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#10 [2023-11-23 07:10:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:10:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 07:10:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 07:10:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-23 07:10:05,532 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:10:05,535 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:10:07,365 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:10:07,488 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:10:07,488 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 07:10:07,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:10:07 BoogieIcfgContainer [2023-11-23 07:10:07,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:10:07,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:10:07,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:10:07,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:10:07,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:10:02" (1/3) ... [2023-11-23 07:10:07,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cd8fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:10:07, skipping insertion in model container [2023-11-23 07:10:07,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:04" (2/3) ... [2023-11-23 07:10:07,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15cd8fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:10:07, skipping insertion in model container [2023-11-23 07:10:07,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:10:07" (3/3) ... [2023-11-23 07:10:07,498 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be16_harness_negated.i [2023-11-23 07:10:07,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:10:07,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:10:07,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:10:07,581 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;@4a7caad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:10:07,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:10:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 07:10:07,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 07:10:07,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:07,602 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 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] [2023-11-23 07:10:07,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:07,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash 699462457, now seen corresponding path program 1 times [2023-11-23 07:10:07,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:07,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860703887] [2023-11-23 07:10:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:07,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:10:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 07:10:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:10:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:10:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:10:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:10:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:10:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:10:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:10:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:10:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:10:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:10:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:10:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:10:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:10:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-23 07:10:09,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:09,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860703887] [2023-11-23 07:10:09,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860703887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:09,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489704303] [2023-11-23 07:10:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:09,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:09,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:09,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:09,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:10:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:09,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:10:09,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 07:10:09,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:10:09,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489704303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:10:09,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:10:09,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2023-11-23 07:10:09,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625939236] [2023-11-23 07:10:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:09,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:10:09,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:10:09,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:10:09,923 INFO L87 Difference]: Start difference. First operand has 159 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 07:10:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:10,109 INFO L93 Difference]: Finished difference Result 312 states and 477 transitions. [2023-11-23 07:10:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:10:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 112 [2023-11-23 07:10:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:10,121 INFO L225 Difference]: With dead ends: 312 [2023-11-23 07:10:10,121 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 07:10:10,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:10:10,129 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:10,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:10:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 07:10:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 07:10:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 98 states have internal predecessors, (129), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-23 07:10:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 224 transitions. [2023-11-23 07:10:10,179 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 224 transitions. Word has length 112 [2023-11-23 07:10:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:10,180 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 224 transitions. [2023-11-23 07:10:10,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 07:10:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 224 transitions. [2023-11-23 07:10:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 07:10:10,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:10,184 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 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] [2023-11-23 07:10:10,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 07:10:10,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 07:10:10,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:10,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash 446820591, now seen corresponding path program 1 times [2023-11-23 07:10:10,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:10,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523616472] [2023-11-23 07:10:10,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:10,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:10,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:10:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 07:10:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:10:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:10:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:10:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:10:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:10:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:10:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:10:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:10:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:10:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:10:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:10:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:10:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:10:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-23 07:10:11,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523616472] [2023-11-23 07:10:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523616472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399864944] [2023-11-23 07:10:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:11,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:11,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:11,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:11,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:10:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:11,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:10:11,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 07:10:11,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:10:11,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399864944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:10:11,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:10:11,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 07:10:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365416458] [2023-11-23 07:10:11,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:11,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:10:11,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:10:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:10:11,896 INFO L87 Difference]: Start difference. First operand 157 states and 224 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 07:10:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:12,153 INFO L93 Difference]: Finished difference Result 294 states and 431 transitions. [2023-11-23 07:10:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:10:12,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 112 [2023-11-23 07:10:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:12,157 INFO L225 Difference]: With dead ends: 294 [2023-11-23 07:10:12,157 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 07:10:12,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:10:12,164 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 46 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:12,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 513 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:10:12,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 07:10:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 07:10:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 100 states have internal predecessors, (130), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2023-11-23 07:10:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 233 transitions. [2023-11-23 07:10:12,193 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 233 transitions. Word has length 112 [2023-11-23 07:10:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:12,194 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 233 transitions. [2023-11-23 07:10:12,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 07:10:12,195 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 233 transitions. [2023-11-23 07:10:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 07:10:12,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:12,201 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 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] [2023-11-23 07:10:12,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:10:12,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 07:10:12,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:12,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2059778858, now seen corresponding path program 1 times [2023-11-23 07:10:12,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:12,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441549258] [2023-11-23 07:10:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:12,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:12,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:10:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:10:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:10:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:10:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:10:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:10:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:10:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:10:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:10:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:10:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:10:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:10:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:10:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:10:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:10:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-23 07:10:13,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441549258] [2023-11-23 07:10:13,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441549258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793615567] [2023-11-23 07:10:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:13,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:13,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:13,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:13,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:10:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:13,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 2806 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:10:13,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 07:10:13,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:10:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793615567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:10:13,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:10:13,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 07:10:13,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052791054] [2023-11-23 07:10:13,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:13,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:10:13,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:10:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:10:13,923 INFO L87 Difference]: Start difference. First operand 159 states and 233 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 07:10:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:14,291 INFO L93 Difference]: Finished difference Result 280 states and 412 transitions. [2023-11-23 07:10:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:10:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 114 [2023-11-23 07:10:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:14,296 INFO L225 Difference]: With dead ends: 280 [2023-11-23 07:10:14,296 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 07:10:14,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:10:14,299 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 45 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:14,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 871 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:10:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 07:10:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 07:10:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 100 states have internal predecessors, (130), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2023-11-23 07:10:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2023-11-23 07:10:14,327 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 114 [2023-11-23 07:10:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:14,327 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2023-11-23 07:10:14,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 07:10:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2023-11-23 07:10:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 07:10:14,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:14,332 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:10:14,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:10:14,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:14,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:14,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1939840155, now seen corresponding path program 2 times [2023-11-23 07:10:14,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:14,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019485586] [2023-11-23 07:10:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:14,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:10:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:10:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:10:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:10:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:10:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:10:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:10:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:10:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:10:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:10:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:10:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:10:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:10:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:10:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:10:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-23 07:10:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:15,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019485586] [2023-11-23 07:10:15,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019485586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:15,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439323033] [2023-11-23 07:10:15,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:10:15,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:15,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:15,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:15,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:10:15,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 07:10:15,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:10:15,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 07:10:15,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-23 07:10:16,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:10:16,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439323033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:10:16,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:10:16,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-23 07:10:16,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904871718] [2023-11-23 07:10:16,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:16,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:10:16,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:16,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:10:16,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:10:16,024 INFO L87 Difference]: Start difference. First operand 159 states and 231 transitions. Second operand has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 07:10:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:16,405 INFO L93 Difference]: Finished difference Result 167 states and 239 transitions. [2023-11-23 07:10:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:10:16,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 116 [2023-11-23 07:10:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:16,407 INFO L225 Difference]: With dead ends: 167 [2023-11-23 07:10:16,407 INFO L226 Difference]: Without dead ends: 165 [2023-11-23 07:10:16,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:10:16,408 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 5 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:16,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1229 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:10:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-23 07:10:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2023-11-23 07:10:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2023-11-23 07:10:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 236 transitions. [2023-11-23 07:10:16,418 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 236 transitions. Word has length 116 [2023-11-23 07:10:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:16,418 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 236 transitions. [2023-11-23 07:10:16,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 07:10:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 236 transitions. [2023-11-23 07:10:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 07:10:16,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:16,420 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 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] [2023-11-23 07:10:16,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:10:16,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:16,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:16,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash -450996064, now seen corresponding path program 3 times [2023-11-23 07:10:16,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:16,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578016638] [2023-11-23 07:10:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:16,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:10:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:10:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:10:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:10:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:10:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:10:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:10:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:10:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:10:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:10:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:10:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:10:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:10:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:10:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:10:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-23 07:10:17,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:17,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578016638] [2023-11-23 07:10:17,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578016638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:17,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456550555] [2023-11-23 07:10:17,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:10:17,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:17,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:17,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:17,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:10:18,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 07:10:18,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:10:18,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 07:10:18,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-23 07:10:18,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:10:18,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456550555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:10:18,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:10:18,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-23 07:10:18,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528175736] [2023-11-23 07:10:18,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:18,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:10:18,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:10:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:10:18,250 INFO L87 Difference]: Start difference. First operand 164 states and 236 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 07:10:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:18,666 INFO L93 Difference]: Finished difference Result 279 states and 400 transitions. [2023-11-23 07:10:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:10:18,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 118 [2023-11-23 07:10:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:18,669 INFO L225 Difference]: With dead ends: 279 [2023-11-23 07:10:18,669 INFO L226 Difference]: Without dead ends: 164 [2023-11-23 07:10:18,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:10:18,670 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 2 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:18,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1154 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:10:18,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-23 07:10:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-23 07:10:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (53), 48 states have call predecessors, (53), 48 states have call successors, (53) [2023-11-23 07:10:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 235 transitions. [2023-11-23 07:10:18,679 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 235 transitions. Word has length 118 [2023-11-23 07:10:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:18,679 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 235 transitions. [2023-11-23 07:10:18,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 07:10:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 235 transitions. [2023-11-23 07:10:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 07:10:18,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:18,681 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 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] [2023-11-23 07:10:18,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:10:18,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:18,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:18,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2119357883, now seen corresponding path program 4 times [2023-11-23 07:10:18,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:18,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234809423] [2023-11-23 07:10:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:18,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:10:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:10:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:10:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:10:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:10:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:10:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:10:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:10:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:10:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:10:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:10:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:10:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:10:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:10:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:10:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-23 07:10:19,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:19,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234809423] [2023-11-23 07:10:19,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234809423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:19,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603535366] [2023-11-23 07:10:19,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 07:10:19,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:19,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:19,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:19,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:10:20,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 07:10:20,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:10:20,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 07:10:20,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 07:10:20,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:10:20,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603535366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:10:20,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:10:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-23 07:10:20,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798426775] [2023-11-23 07:10:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:20,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:10:20,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:10:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:10:20,418 INFO L87 Difference]: Start difference. First operand 164 states and 235 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 07:10:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:20,867 INFO L93 Difference]: Finished difference Result 284 states and 407 transitions. [2023-11-23 07:10:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:10:20,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 120 [2023-11-23 07:10:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:20,869 INFO L225 Difference]: With dead ends: 284 [2023-11-23 07:10:20,870 INFO L226 Difference]: Without dead ends: 164 [2023-11-23 07:10:20,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:10:20,871 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 137 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:20,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 982 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:10:20,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-23 07:10:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-23 07:10:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:10:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 232 transitions. [2023-11-23 07:10:20,880 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 232 transitions. Word has length 120 [2023-11-23 07:10:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:20,880 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 232 transitions. [2023-11-23 07:10:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 07:10:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 232 transitions. [2023-11-23 07:10:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 07:10:20,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:20,882 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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] [2023-11-23 07:10:20,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:10:21,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:21,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:21,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:21,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1078902336, now seen corresponding path program 1 times [2023-11-23 07:10:21,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:21,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184634279] [2023-11-23 07:10:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:21,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:10:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:10:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:10:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:10:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:10:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:10:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:10:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:10:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:10:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:10:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:10:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:10:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:10:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:10:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:10:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-23 07:10:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184634279] [2023-11-23 07:10:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184634279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:10:21,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:10:21,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:10:21,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615306707] [2023-11-23 07:10:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:21,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:10:21,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:10:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:10:21,821 INFO L87 Difference]: Start difference. First operand 164 states and 232 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 07:10:22,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:22,797 INFO L93 Difference]: Finished difference Result 309 states and 440 transitions. [2023-11-23 07:10:22,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:10:22,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 122 [2023-11-23 07:10:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:22,800 INFO L225 Difference]: With dead ends: 309 [2023-11-23 07:10:22,800 INFO L226 Difference]: Without dead ends: 179 [2023-11-23 07:10:22,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:10:22,802 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 145 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:22,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 510 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:10:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-23 07:10:22,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2023-11-23 07:10:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 07:10:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 237 transitions. [2023-11-23 07:10:22,829 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 237 transitions. Word has length 122 [2023-11-23 07:10:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:22,830 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 237 transitions. [2023-11-23 07:10:22,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 07:10:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 237 transitions. [2023-11-23 07:10:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 07:10:22,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:22,832 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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] [2023-11-23 07:10:22,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 07:10:22,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:22,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2105073249, now seen corresponding path program 1 times [2023-11-23 07:10:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979596601] [2023-11-23 07:10:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:10:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:10:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:10:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:10:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:10:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:10:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:10:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 07:10:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 07:10:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:10:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:10:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:10:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:10:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:10:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 07:10:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-23 07:10:24,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:24,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979596601] [2023-11-23 07:10:24,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979596601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:24,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058908258] [2023-11-23 07:10:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:24,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:24,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:24,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:24,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:10:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:25,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:10:25,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 07:10:25,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:10:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-23 07:10:25,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058908258] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:25,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:10:25,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 5] total 17 [2023-11-23 07:10:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812359605] [2023-11-23 07:10:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:25,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:10:25,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:25,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:10:25,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:10:25,446 INFO L87 Difference]: Start difference. First operand 167 states and 237 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 07:10:25,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:25,698 INFO L93 Difference]: Finished difference Result 306 states and 440 transitions. [2023-11-23 07:10:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:10:25,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 123 [2023-11-23 07:10:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:25,702 INFO L225 Difference]: With dead ends: 306 [2023-11-23 07:10:25,702 INFO L226 Difference]: Without dead ends: 172 [2023-11-23 07:10:25,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:10:25,705 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 4 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:25,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 413 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:10:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-23 07:10:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2023-11-23 07:10:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 106 states have (on average 1.320754716981132) internal successors, (140), 108 states have internal predecessors, (140), 49 states have call successors, (49), 13 states have call predecessors, (49), 14 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 07:10:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 240 transitions. [2023-11-23 07:10:25,720 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 240 transitions. Word has length 123 [2023-11-23 07:10:25,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:25,720 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 240 transitions. [2023-11-23 07:10:25,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 07:10:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 240 transitions. [2023-11-23 07:10:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 07:10:25,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:25,723 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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] [2023-11-23 07:10:25,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 07:10:25,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:25,938 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:25,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash -910793694, now seen corresponding path program 1 times [2023-11-23 07:10:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:25,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920277233] [2023-11-23 07:10:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:25,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:10:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:10:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:10:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:10:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:10:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:10:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:10:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 07:10:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:10:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:10:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:10:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:10:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:10:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 07:10:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:10:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:10:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-23 07:10:26,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:26,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920277233] [2023-11-23 07:10:26,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920277233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:26,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081539615] [2023-11-23 07:10:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:26,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:26,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:26,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:26,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 07:10:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:27,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 134 conjunts are in the unsatisfiable core [2023-11-23 07:10:27,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:27,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 07:10:28,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:10:28,295 INFO L349 Elim1Store]: treesize reduction 42, result has 25.0 percent of original size [2023-11-23 07:10:28,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 23 [2023-11-23 07:10:28,309 INFO L349 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2023-11-23 07:10:28,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:10:28,350 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 07:10:28,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 07:10:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 126 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 07:10:28,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:10:28,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081539615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:28,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:10:28,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15] total 20 [2023-11-23 07:10:28,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315939737] [2023-11-23 07:10:28,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:10:28,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 07:10:28,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 07:10:28,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=569, Unknown=14, NotChecked=0, Total=650 [2023-11-23 07:10:28,997 INFO L87 Difference]: Start difference. First operand 170 states and 240 transitions. Second operand has 20 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 7 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (38), 6 states have call predecessors, (38), 7 states have call successors, (38) [2023-11-23 07:10:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:33,442 INFO L93 Difference]: Finished difference Result 376 states and 523 transitions. [2023-11-23 07:10:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 07:10:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 7 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (38), 6 states have call predecessors, (38), 7 states have call successors, (38) Word has length 124 [2023-11-23 07:10:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:33,444 INFO L225 Difference]: With dead ends: 376 [2023-11-23 07:10:33,444 INFO L226 Difference]: Without dead ends: 221 [2023-11-23 07:10:33,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 139 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=218, Invalid=1566, Unknown=22, NotChecked=0, Total=1806 [2023-11-23 07:10:33,446 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 399 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:33,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1266 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 07:10:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-23 07:10:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 200. [2023-11-23 07:10:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 130 states have (on average 1.3076923076923077) internal successors, (170), 132 states have internal predecessors, (170), 50 states have call successors, (50), 17 states have call predecessors, (50), 19 states have return successors, (52), 50 states have call predecessors, (52), 49 states have call successors, (52) [2023-11-23 07:10:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 272 transitions. [2023-11-23 07:10:33,460 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 272 transitions. Word has length 124 [2023-11-23 07:10:33,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:33,460 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 272 transitions. [2023-11-23 07:10:33,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 7 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (38), 6 states have call predecessors, (38), 7 states have call successors, (38) [2023-11-23 07:10:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 272 transitions. [2023-11-23 07:10:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 07:10:33,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:33,462 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 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, 1, 1, 1] [2023-11-23 07:10:33,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:10:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 07:10:33,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:33,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2127038354, now seen corresponding path program 1 times [2023-11-23 07:10:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407591377] [2023-11-23 07:10:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:10:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:10:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:10:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:10:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:10:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:10:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:10:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:10:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:10:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:10:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:10:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:10:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:10:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:10:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:10:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:10:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:10:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-23 07:10:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407591377] [2023-11-23 07:10:35,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407591377] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997187143] [2023-11-23 07:10:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:35,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:35,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:35,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 07:10:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:36,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 3141 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 07:10:36,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 07:10:36,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:10:36,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997187143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:10:36,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:10:36,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 19 [2023-11-23 07:10:36,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322489574] [2023-11-23 07:10:36,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:10:36,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:10:36,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:36,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:10:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:10:36,797 INFO L87 Difference]: Start difference. First operand 200 states and 272 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:10:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:37,812 INFO L93 Difference]: Finished difference Result 379 states and 519 transitions. [2023-11-23 07:10:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:10:37,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 135 [2023-11-23 07:10:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:37,815 INFO L225 Difference]: With dead ends: 379 [2023-11-23 07:10:37,815 INFO L226 Difference]: Without dead ends: 197 [2023-11-23 07:10:37,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:10:37,816 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 3 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:37,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1770 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:10:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-23 07:10:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2023-11-23 07:10:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 129 states have internal predecessors, (166), 49 states have call successors, (49), 17 states have call predecessors, (49), 18 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 07:10:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 265 transitions. [2023-11-23 07:10:37,830 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 265 transitions. Word has length 135 [2023-11-23 07:10:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:37,830 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 265 transitions. [2023-11-23 07:10:37,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:10:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 265 transitions. [2023-11-23 07:10:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 07:10:37,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:37,832 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 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, 1, 1, 1] [2023-11-23 07:10:37,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 07:10:38,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 07:10:38,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:38,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:38,049 INFO L85 PathProgramCache]: Analyzing trace with hash 58092425, now seen corresponding path program 1 times [2023-11-23 07:10:38,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:38,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999590879] [2023-11-23 07:10:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:38,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:10:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:10:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:10:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:10:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:10:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:10:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:10:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:10:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:10:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:10:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:10:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:10:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:10:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:10:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:10:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:10:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:10:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:10:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-23 07:10:39,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:39,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999590879] [2023-11-23 07:10:39,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999590879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:39,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994557658] [2023-11-23 07:10:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:39,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:39,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:39,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:39,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 07:10:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:41,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 92 conjunts are in the unsatisfiable core [2023-11-23 07:10:41,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:41,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 07:10:41,704 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 07:10:41,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 07:10:42,352 INFO L349 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2023-11-23 07:10:42,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 33 [2023-11-23 07:10:42,386 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-11-23 07:10:42,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2023-11-23 07:10:42,512 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-23 07:10:42,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-23 07:10:43,640 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-23 07:10:43,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-23 07:10:43,949 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-23 07:10:43,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-23 07:10:43,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 07:10:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 91 proven. 48 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 07:10:46,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:10:48,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994557658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:48,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:10:48,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 22] total 30 [2023-11-23 07:10:48,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002089808] [2023-11-23 07:10:48,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:10:48,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 07:10:48,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 07:10:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=995, Unknown=16, NotChecked=0, Total=1122 [2023-11-23 07:10:48,524 INFO L87 Difference]: Start difference. First operand 195 states and 265 transitions. Second operand has 30 states, 28 states have (on average 3.642857142857143) internal successors, (102), 26 states have internal predecessors, (102), 12 states have call successors, (45), 9 states have call predecessors, (45), 7 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) [2023-11-23 07:10:50,609 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] [2023-11-23 07:10:54,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:58,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:02,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:04,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:06,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:08,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:10,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:14,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:23,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:25,379 WARN L539 Checker$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] [2023-11-23 07:11:33,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:36,503 WARN L539 Checker$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] [2023-11-23 07:11:38,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:40,650 WARN L539 Checker$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] [2023-11-23 07:11:42,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:45,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:11:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:11:46,490 INFO L93 Difference]: Finished difference Result 546 states and 745 transitions. [2023-11-23 07:11:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-23 07:11:46,491 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.642857142857143) internal successors, (102), 26 states have internal predecessors, (102), 12 states have call successors, (45), 9 states have call predecessors, (45), 7 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) Word has length 135 [2023-11-23 07:11:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:11:46,493 INFO L225 Difference]: With dead ends: 546 [2023-11-23 07:11:46,494 INFO L226 Difference]: Without dead ends: 398 [2023-11-23 07:11:46,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 148 SyntacticMatches, 31 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=667, Invalid=4862, Unknown=21, NotChecked=0, Total=5550 [2023-11-23 07:11:46,498 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 766 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 365 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 3447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:11:46,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1196 Invalid, 3447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [365 Valid, 3065 Invalid, 17 Unknown, 0 Unchecked, 48.5s Time] [2023-11-23 07:11:46,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-23 07:11:46,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 327. [2023-11-23 07:11:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 222 states have internal predecessors, (282), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (79), 74 states have call predecessors, (79), 73 states have call successors, (79) [2023-11-23 07:11:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 436 transitions. [2023-11-23 07:11:46,528 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 436 transitions. Word has length 135 [2023-11-23 07:11:46,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:11:46,529 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 436 transitions. [2023-11-23 07:11:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.642857142857143) internal successors, (102), 26 states have internal predecessors, (102), 12 states have call successors, (45), 9 states have call predecessors, (45), 7 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) [2023-11-23 07:11:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 436 transitions. [2023-11-23 07:11:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 07:11:46,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:11:46,531 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:11:46,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:11:46,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 07:11:46,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:11:46,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:11:46,741 INFO L85 PathProgramCache]: Analyzing trace with hash -998950151, now seen corresponding path program 1 times [2023-11-23 07:11:46,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:11:46,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896035541] [2023-11-23 07:11:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:11:46,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:11:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:11:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:11:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:11:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:11:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:11:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:11:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:11:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:11:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:11:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:11:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:11:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:11:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:47,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:11:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:11:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:11:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:11:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:11:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:11:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:11:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:11:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 07:11:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-23 07:11:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:11:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896035541] [2023-11-23 07:11:48,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896035541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:11:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581310825] [2023-11-23 07:11:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:11:48,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:11:48,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:11:48,344 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:11:48,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 07:11:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:49,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 07:11:49,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:11:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-23 07:11:49,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:11:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-23 07:11:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581310825] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:11:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:11:50,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 15] total 23 [2023-11-23 07:11:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599145568] [2023-11-23 07:11:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:11:50,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:11:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:11:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:11:50,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:11:50,345 INFO L87 Difference]: Start difference. First operand 327 states and 436 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 07:11:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:11:51,438 INFO L93 Difference]: Finished difference Result 361 states and 482 transitions. [2023-11-23 07:11:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:11:51,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 151 [2023-11-23 07:11:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:11:51,442 INFO L225 Difference]: With dead ends: 361 [2023-11-23 07:11:51,443 INFO L226 Difference]: Without dead ends: 359 [2023-11-23 07:11:51,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:11:51,444 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 17 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:11:51,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1652 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:11:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-23 07:11:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 335. [2023-11-23 07:11:51,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 230 states have internal predecessors, (288), 75 states have call successors, (75), 30 states have call predecessors, (75), 36 states have return successors, (87), 74 states have call predecessors, (87), 73 states have call successors, (87) [2023-11-23 07:11:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 450 transitions. [2023-11-23 07:11:51,475 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 450 transitions. Word has length 151 [2023-11-23 07:11:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:11:51,476 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 450 transitions. [2023-11-23 07:11:51,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 07:11:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 450 transitions. [2023-11-23 07:11:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 07:11:51,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:11:51,478 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:11:51,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 07:11:51,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 07:11:51,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:11:51,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:11:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1321329710, now seen corresponding path program 1 times [2023-11-23 07:11:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:11:51,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221147957] [2023-11-23 07:11:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:11:51,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:11:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:11:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:11:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:11:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:11:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:11:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:11:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:11:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:11:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:11:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:11:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:11:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:11:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:11:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:11:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:11:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:11:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:11:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:11:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:11:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:11:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 07:11:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-23 07:11:53,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:11:53,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221147957] [2023-11-23 07:11:53,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221147957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:11:53,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161195868] [2023-11-23 07:11:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:11:53,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:11:53,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:11:53,675 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:11:53,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:11:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:11:54,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-23 07:11:54,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:11:55,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:11:55,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 07:12:00,632 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 07:12:00,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-23 07:12:00,680 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 07:12:00,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-23 07:12:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-11-23 07:12:02,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:12:02,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161195868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:12:02,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:12:02,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 27 [2023-11-23 07:12:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496181239] [2023-11-23 07:12:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:12:02,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 07:12:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:12:02,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 07:12:02,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:12:02,186 INFO L87 Difference]: Start difference. First operand 335 states and 450 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-23 07:12:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:12:09,063 INFO L93 Difference]: Finished difference Result 906 states and 1218 transitions. [2023-11-23 07:12:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 07:12:09,064 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) Word has length 153 [2023-11-23 07:12:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:12:09,068 INFO L225 Difference]: With dead ends: 906 [2023-11-23 07:12:09,068 INFO L226 Difference]: Without dead ends: 579 [2023-11-23 07:12:09,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 143 SyntacticMatches, 34 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 07:12:09,070 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 263 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:12:09,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1960 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-23 07:12:09,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-11-23 07:12:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 546. [2023-11-23 07:12:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 369 states have (on average 1.2818428184281843) internal successors, (473), 381 states have internal predecessors, (473), 118 states have call successors, (118), 48 states have call predecessors, (118), 58 states have return successors, (139), 116 states have call predecessors, (139), 115 states have call successors, (139) [2023-11-23 07:12:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 730 transitions. [2023-11-23 07:12:09,120 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 730 transitions. Word has length 153 [2023-11-23 07:12:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:12:09,121 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 730 transitions. [2023-11-23 07:12:09,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-23 07:12:09,121 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 730 transitions. [2023-11-23 07:12:09,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 07:12:09,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:12:09,123 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:12:09,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 07:12:09,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 07:12:09,344 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:12:09,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:12:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1908135724, now seen corresponding path program 1 times [2023-11-23 07:12:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:12:09,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292613461] [2023-11-23 07:12:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:12:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:12:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:12:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:12:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:12:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:12:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:12:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:12:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:12:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:12:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:12:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:12:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:12:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:12:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:12:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:12:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:12:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:12:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:12:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 07:12:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 07:12:09,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:12:09,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292613461] [2023-11-23 07:12:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292613461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:12:09,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:12:09,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:12:09,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136699187] [2023-11-23 07:12:09,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:12:09,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:12:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:12:10,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:12:10,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:12:10,000 INFO L87 Difference]: Start difference. First operand 546 states and 730 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 07:12:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:12:12,179 INFO L93 Difference]: Finished difference Result 1129 states and 1529 transitions. [2023-11-23 07:12:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:12:12,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 153 [2023-11-23 07:12:12,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:12:12,184 INFO L225 Difference]: With dead ends: 1129 [2023-11-23 07:12:12,184 INFO L226 Difference]: Without dead ends: 615 [2023-11-23 07:12:12,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:12:12,187 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 139 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:12:12,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 500 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 07:12:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-23 07:12:12,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 539. [2023-11-23 07:12:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 364 states have (on average 1.2637362637362637) internal successors, (460), 375 states have internal predecessors, (460), 117 states have call successors, (117), 48 states have call predecessors, (117), 57 states have return successors, (133), 115 states have call predecessors, (133), 114 states have call successors, (133) [2023-11-23 07:12:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 710 transitions. [2023-11-23 07:12:12,235 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 710 transitions. Word has length 153 [2023-11-23 07:12:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:12:12,235 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 710 transitions. [2023-11-23 07:12:12,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 07:12:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 710 transitions. [2023-11-23 07:12:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-23 07:12:12,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:12:12,237 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:12:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 07:12:12,238 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:12:12,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:12:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash 557628917, now seen corresponding path program 1 times [2023-11-23 07:12:12,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:12:12,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317981435] [2023-11-23 07:12:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:12:12,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:12:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:12:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:12:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:12:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:12:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:12:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:12:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:12:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:12:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:12:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:12:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:12:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:12:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:12:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:12:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:12:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:12:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:12:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 07:12:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:12:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:12:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-23 07:12:13,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:12:13,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317981435] [2023-11-23 07:12:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317981435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:12:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895687688] [2023-11-23 07:12:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:12:13,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:12:13,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:12:13,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:12:13,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:12:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:14,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 3196 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:12:14,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:12:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 07:12:14,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:12:14,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895687688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:12:14,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:12:14,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-11-23 07:12:14,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119339922] [2023-11-23 07:12:14,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:12:14,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:12:14,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:12:14,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:12:14,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:12:14,905 INFO L87 Difference]: Start difference. First operand 539 states and 710 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 6 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-23 07:12:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:12:15,961 INFO L93 Difference]: Finished difference Result 925 states and 1202 transitions. [2023-11-23 07:12:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:12:15,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 6 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 156 [2023-11-23 07:12:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:12:15,964 INFO L225 Difference]: With dead ends: 925 [2023-11-23 07:12:15,965 INFO L226 Difference]: Without dead ends: 539 [2023-11-23 07:12:15,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:12:15,967 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 169 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:12:15,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1107 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:12:15,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-11-23 07:12:16,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 535. [2023-11-23 07:12:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 362 states have (on average 1.2651933701657458) internal successors, (458), 371 states have internal predecessors, (458), 117 states have call successors, (117), 48 states have call predecessors, (117), 55 states have return successors, (128), 115 states have call predecessors, (128), 114 states have call successors, (128) [2023-11-23 07:12:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 703 transitions. [2023-11-23 07:12:16,011 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 703 transitions. Word has length 156 [2023-11-23 07:12:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:12:16,011 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 703 transitions. [2023-11-23 07:12:16,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 6 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-23 07:12:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 703 transitions. [2023-11-23 07:12:16,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-23 07:12:16,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:12:16,014 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:12:16,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 07:12:16,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 07:12:16,224 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:12:16,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:12:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1458695775, now seen corresponding path program 1 times [2023-11-23 07:12:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:12:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811805612] [2023-11-23 07:12:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:12:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:12:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:12:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:12:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:12:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:12:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:12:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:12:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:12:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:12:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 07:12:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:12:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:12:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:12:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:12:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:12:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:12:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:12:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:12:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:12:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 07:12:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-23 07:12:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-11-23 07:12:17,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:12:17,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811805612] [2023-11-23 07:12:17,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811805612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:12:17,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927472152] [2023-11-23 07:12:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:12:17,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:12:17,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:12:17,777 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:12:17,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 07:12:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:12:18,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 3233 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-23 07:12:18,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:12:19,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:12:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 07:12:25,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:12:25,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927472152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:12:25,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:12:25,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [11] total 30 [2023-11-23 07:12:25,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26840063] [2023-11-23 07:12:25,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:12:25,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 07:12:25,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:12:25,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 07:12:25,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2023-11-23 07:12:25,151 INFO L87 Difference]: Start difference. First operand 535 states and 703 transitions. Second operand has 21 states, 18 states have (on average 4.666666666666667) internal successors, (84), 19 states have internal predecessors, (84), 9 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-23 07:12:27,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:12:30,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:12:32,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:12:34,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:12:37,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:12:39,780 WARN L539 Checker$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] [2023-11-23 07:12:44,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:12:46,982 WARN L539 Checker$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] [2023-11-23 07:12:49,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:12:52,310 WARN L539 Checker$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] [2023-11-23 07:12:54,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:12:56,353 WARN L539 Checker$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] [2023-11-23 07:12:58,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:00,419 WARN L539 Checker$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] [2023-11-23 07:13:02,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:04,462 WARN L539 Checker$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] [2023-11-23 07:13:06,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:08,616 WARN L539 Checker$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] [2023-11-23 07:13:10,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:12,652 WARN L539 Checker$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] [2023-11-23 07:13:14,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:16,677 WARN L539 Checker$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] [2023-11-23 07:13:18,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:20,720 WARN L539 Checker$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] [2023-11-23 07:13:22,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:24,769 WARN L539 Checker$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] [2023-11-23 07:13:26,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:28,865 WARN L539 Checker$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] [2023-11-23 07:13:30,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:32,871 WARN L539 Checker$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] [2023-11-23 07:13:34,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:36,902 WARN L539 Checker$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] [2023-11-23 07:13:38,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:40,906 WARN L539 Checker$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] [2023-11-23 07:13:42,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:44,911 WARN L539 Checker$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] [2023-11-23 07:13:46,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:48,918 WARN L539 Checker$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] [2023-11-23 07:13:50,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:52,960 WARN L539 Checker$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] [2023-11-23 07:13:54,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:13:56,964 WARN L539 Checker$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] [2023-11-23 07:13:58,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:00,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:01,487 INFO L93 Difference]: Finished difference Result 991 states and 1319 transitions. [2023-11-23 07:14:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 07:14:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.666666666666667) internal successors, (84), 19 states have internal predecessors, (84), 9 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) Word has length 163 [2023-11-23 07:14:01,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:01,492 INFO L225 Difference]: With dead ends: 991 [2023-11-23 07:14:01,492 INFO L226 Difference]: Without dead ends: 687 [2023-11-23 07:14:01,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 165 SyntacticMatches, 23 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=216, Invalid=1506, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 07:14:01,495 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 337 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 85 mSolverCounterUnsat, 44 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 44 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:01,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 2124 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1240 Invalid, 44 Unknown, 0 Unchecked, 95.0s Time] [2023-11-23 07:14:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-23 07:14:01,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 630. [2023-11-23 07:14:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 432 states have (on average 1.25) internal successors, (540), 443 states have internal predecessors, (540), 133 states have call successors, (133), 56 states have call predecessors, (133), 64 states have return successors, (145), 130 states have call predecessors, (145), 130 states have call successors, (145) [2023-11-23 07:14:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 818 transitions. [2023-11-23 07:14:01,552 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 818 transitions. Word has length 163 [2023-11-23 07:14:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:01,552 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 818 transitions. [2023-11-23 07:14:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.666666666666667) internal successors, (84), 19 states have internal predecessors, (84), 9 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-23 07:14:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 818 transitions. [2023-11-23 07:14:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-23 07:14:01,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:01,555 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:01,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 07:14:01,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:01,780 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:01,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash 202849249, now seen corresponding path program 1 times [2023-11-23 07:14:01,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:01,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554527285] [2023-11-23 07:14:01,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:01,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15