./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness_negated.i --full-output --preprocessor.use.memory.slicer false --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_buf_write_from_whole_buffer_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 ad8a37f4b8c02a050e9272706ca61d059e4c636c3a71575373db82bc57bb9589 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:21:18,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:21:18,905 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:21:18,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:21:18,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:21:18,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:21:18,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:21:18,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:21:18,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:21:18,953 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:21:18,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:21:18,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:21:18,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:21:18,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:21:18,954 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:21:18,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:21:18,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:21:18,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:21:18,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:21:18,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:21:18,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:21:18,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:21:18,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:21:18,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:21:18,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:21:18,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:21:18,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:21:18,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:21:18,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:21:18,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:21:18,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:21:18,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:21:18,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:21:18,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:21:18,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:21:18,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:21:18,970 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:21:18,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:21:18,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:21:18,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad8a37f4b8c02a050e9272706ca61d059e4c636c3a71575373db82bc57bb9589 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:21:19,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:21:19,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:21:19,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:21:19,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:21:19,251 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:21:19,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness_negated.i [2023-11-23 08:21:20,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:21:21,013 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:21:21,014 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness_negated.i [2023-11-23 08:21:21,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0a325e5/a17617c548ea47acb45d39a1e1d3929d/FLAG72b26efec [2023-11-23 08:21:21,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b0a325e5/a17617c548ea47acb45d39a1e1d3929d [2023-11-23 08:21:21,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:21:21,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:21:21,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:21:21,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:21:21,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:21:21,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:21:21" (1/1) ... [2023-11-23 08:21:21,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@150cd9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:21, skipping insertion in model container [2023-11-23 08:21:21,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:21:21" (1/1) ... [2023-11-23 08:21:21,233 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:21:21,476 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_buf_write_from_whole_buffer_harness_negated.i[4510,4523] [2023-11-23 08:21:21,483 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_buf_write_from_whole_buffer_harness_negated.i[4570,4583] [2023-11-23 08:21:22,292 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,294 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,295 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,297 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,321 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,325 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,328 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,329 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,634 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:21:22,635 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:21:22,636 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:21:22,637 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:21:22,638 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:21:22,638 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:21:22,639 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:21:22,641 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:21:22,642 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:21:22,644 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:21:22,885 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:22,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:21:23,036 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:21:23,048 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_buf_write_from_whole_buffer_harness_negated.i[4510,4523] [2023-11-23 08:21:23,049 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_buf_write_from_whole_buffer_harness_negated.i[4570,4583] [2023-11-23 08:21:23,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,082 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,082 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,084 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,093 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,093 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,094 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,094 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,121 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:21:23,127 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:21:23,129 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:21:23,130 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:21:23,131 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:21:23,131 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:21:23,132 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:21:23,132 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:21:23,133 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:21:23,139 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:21:23,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2023-11-23 08:21:23,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,216 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:23,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2023-11-23 08:21:23,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:21:23,511 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,513 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,513 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,513 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,513 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,513 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,514 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,514 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,514 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,514 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,514 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,514 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,514 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,517 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,517 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,517 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,517 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,517 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:23,526 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:21:23,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23 WrapperNode [2023-11-23 08:21:23,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:21:23,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:21:23,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:21:23,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:21:23,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,743 INFO L138 Inliner]: procedures = 690, calls = 2659, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 902 [2023-11-23 08:21:23,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:21:23,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:21:23,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:21:23,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:21:23,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:21:23,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:21:23,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:21:23,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:21:23,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (1/1) ... [2023-11-23 08:21:23,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:21:23,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:23,914 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 08:21:23,929 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 08:21:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:21:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:21:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:21:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:21:23,999 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:21:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:21:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:21:24,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:21:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:21:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:21:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 08:21:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 08:21:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:21:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 08:21:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 08:21:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:21:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:21:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:21:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:21:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:21:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:21:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:21:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:21:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:21:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:21:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 08:21:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 08:21:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:21:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:21:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 08:21:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 08:21:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:21:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:21:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:21:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:21:24,005 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:21:24,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 08:21:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 08:21:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:21:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-23 08:21:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-23 08:21:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:21:24,273 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:21:24,275 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:21:25,189 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:21:25,341 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:21:25,341 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:21:25,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:21:25 BoogieIcfgContainer [2023-11-23 08:21:25,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:21:25,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:21:25,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:21:25,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:21:25,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:21:21" (1/3) ... [2023-11-23 08:21:25,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706637a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:21:25, skipping insertion in model container [2023-11-23 08:21:25,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:23" (2/3) ... [2023-11-23 08:21:25,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706637a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:21:25, skipping insertion in model container [2023-11-23 08:21:25,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:21:25" (3/3) ... [2023-11-23 08:21:25,354 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness_negated.i [2023-11-23 08:21:25,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:21:25,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:21:25,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:21:25,440 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;@2913cf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:21:25,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:21:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 91 states have internal predecessors, (112), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-23 08:21:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 08:21:25,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:25,464 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:21:25,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:25,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 289396822, now seen corresponding path program 1 times [2023-11-23 08:21:25,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:25,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916392454] [2023-11-23 08:21:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:25,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:21:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:21:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:21:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:21:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:21:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:21:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:21:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:21:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:21:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:21:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-23 08:21:26,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:26,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916392454] [2023-11-23 08:21:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916392454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:21:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:21:26,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377558811] [2023-11-23 08:21:26,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:26,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:21:26,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:21:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:21:26,581 INFO L87 Difference]: Start difference. First operand has 159 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 91 states have internal predecessors, (112), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 08:21:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:27,431 INFO L93 Difference]: Finished difference Result 325 states and 483 transitions. [2023-11-23 08:21:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2023-11-23 08:21:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:27,442 INFO L225 Difference]: With dead ends: 325 [2023-11-23 08:21:27,443 INFO L226 Difference]: Without dead ends: 167 [2023-11-23 08:21:27,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:21:27,450 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 169 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:27,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 134 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:21:27,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-23 08:21:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2023-11-23 08:21:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:21:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 213 transitions. [2023-11-23 08:21:27,510 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 213 transitions. Word has length 141 [2023-11-23 08:21:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:27,511 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 213 transitions. [2023-11-23 08:21:27,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 08:21:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 213 transitions. [2023-11-23 08:21:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 08:21:27,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:27,523 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:21:27,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:21:27,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:27,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1886544022, now seen corresponding path program 1 times [2023-11-23 08:21:27,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:27,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099801059] [2023-11-23 08:21:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:27,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:21:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:21:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:21:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:21:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:21:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:21:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:21:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:21:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:21:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:21:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 08:21:28,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:28,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099801059] [2023-11-23 08:21:28,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099801059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:28,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614341994] [2023-11-23 08:21:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:28,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:28,560 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 08:21:28,565 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 08:21:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:29,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:29,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 08:21:29,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:29,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614341994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:29,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:29,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:21:29,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456121613] [2023-11-23 08:21:29,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:29,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:21:29,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:21:29,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:29,336 INFO L87 Difference]: Start difference. First operand 157 states and 213 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 08:21:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:29,786 INFO L93 Difference]: Finished difference Result 310 states and 426 transitions. [2023-11-23 08:21:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:29,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 141 [2023-11-23 08:21:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:29,793 INFO L225 Difference]: With dead ends: 310 [2023-11-23 08:21:29,793 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 08:21:29,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:29,798 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 43 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:29,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 498 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:21:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 08:21:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 08:21:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 92 states have internal predecessors, (109), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-11-23 08:21:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 221 transitions. [2023-11-23 08:21:29,850 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 221 transitions. Word has length 141 [2023-11-23 08:21:29,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:29,850 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 221 transitions. [2023-11-23 08:21:29,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 08:21:29,851 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 221 transitions. [2023-11-23 08:21:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-23 08:21:29,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:29,853 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:29,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:21:30,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:30,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:30,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:30,066 INFO L85 PathProgramCache]: Analyzing trace with hash -977098935, now seen corresponding path program 1 times [2023-11-23 08:21:30,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:30,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160051522] [2023-11-23 08:21:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:30,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:21:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:21:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:21:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:21:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:21:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:21:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:21:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 08:21:30,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:30,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160051522] [2023-11-23 08:21:30,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160051522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:30,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783795679] [2023-11-23 08:21:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:30,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:30,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:30,663 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 08:21:30,672 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 08:21:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:31,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:21:31,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 08:21:31,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:31,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783795679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:31,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:31,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 08:21:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097724789] [2023-11-23 08:21:31,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:31,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:21:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:21:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:21:31,283 INFO L87 Difference]: Start difference. First operand 159 states and 221 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:21:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:31,703 INFO L93 Difference]: Finished difference Result 322 states and 456 transitions. [2023-11-23 08:21:31,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:31,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 147 [2023-11-23 08:21:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:31,705 INFO L225 Difference]: With dead ends: 322 [2023-11-23 08:21:31,705 INFO L226 Difference]: Without dead ends: 169 [2023-11-23 08:21:31,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:21:31,707 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 29 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:31,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 582 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:21:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-23 08:21:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2023-11-23 08:21:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 94 states have internal predecessors, (111), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-11-23 08:21:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2023-11-23 08:21:31,722 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 147 [2023-11-23 08:21:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:31,722 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2023-11-23 08:21:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:21:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2023-11-23 08:21:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-23 08:21:31,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:31,724 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:31,747 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 08:21:31,939 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,SelfDestructingSolverStorable2 [2023-11-23 08:21:31,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:31,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1315982091, now seen corresponding path program 1 times [2023-11-23 08:21:31,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:31,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531683749] [2023-11-23 08:21:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:21:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:21:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:21:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:21:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:21:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:21:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:21:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 08:21:32,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:32,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531683749] [2023-11-23 08:21:32,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531683749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:32,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303055078] [2023-11-23 08:21:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:32,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:32,615 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 08:21:32,630 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 08:21:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:33,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:33,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 08:21:33,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:33,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303055078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:33,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:33,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:21:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366507442] [2023-11-23 08:21:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:33,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:21:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:21:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:33,321 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 08:21:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:33,533 INFO L93 Difference]: Finished difference Result 290 states and 404 transitions. [2023-11-23 08:21:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:33,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 147 [2023-11-23 08:21:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:33,536 INFO L225 Difference]: With dead ends: 290 [2023-11-23 08:21:33,536 INFO L226 Difference]: Without dead ends: 161 [2023-11-23 08:21:33,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:33,537 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 41 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:33,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 506 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:21:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-23 08:21:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-23 08:21:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 94 states have internal predecessors, (111), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2023-11-23 08:21:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 221 transitions. [2023-11-23 08:21:33,552 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 221 transitions. Word has length 147 [2023-11-23 08:21:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:33,553 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 221 transitions. [2023-11-23 08:21:33,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 08:21:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 221 transitions. [2023-11-23 08:21:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 08:21:33,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:33,555 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:21:33,576 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 08:21:33,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:33,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:33,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:33,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1285152320, now seen corresponding path program 2 times [2023-11-23 08:21:33,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:33,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928962585] [2023-11-23 08:21:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:33,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:21:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:21:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 08:21:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:21:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 08:21:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:21:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 08:21:34,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:34,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928962585] [2023-11-23 08:21:34,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928962585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:34,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835916488] [2023-11-23 08:21:34,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:21:34,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:34,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:34,885 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 08:21:34,906 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 08:21:35,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:21:35,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:21:35,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:21:35,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-23 08:21:35,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:35,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835916488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:35,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:35,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-23 08:21:35,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910776403] [2023-11-23 08:21:35,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:35,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:21:35,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:21:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:21:35,487 INFO L87 Difference]: Start difference. First operand 161 states and 221 transitions. Second operand has 7 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 08:21:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:36,092 INFO L93 Difference]: Finished difference Result 169 states and 229 transitions. [2023-11-23 08:21:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:21:36,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 153 [2023-11-23 08:21:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:36,095 INFO L225 Difference]: With dead ends: 169 [2023-11-23 08:21:36,095 INFO L226 Difference]: Without dead ends: 167 [2023-11-23 08:21:36,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:21:36,096 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 5 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:36,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1164 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:21:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-23 08:21:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2023-11-23 08:21:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 97 states have internal predecessors, (114), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2023-11-23 08:21:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 226 transitions. [2023-11-23 08:21:36,110 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 226 transitions. Word has length 153 [2023-11-23 08:21:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:36,111 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 226 transitions. [2023-11-23 08:21:36,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 08:21:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 226 transitions. [2023-11-23 08:21:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-23 08:21:36,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:36,113 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:21:36,136 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 08:21:36,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:36,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:36,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash -248622411, now seen corresponding path program 3 times [2023-11-23 08:21:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:36,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121422514] [2023-11-23 08:21:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:21:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:21:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 08:21:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:21:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 08:21:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:21:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 08:21:37,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:37,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121422514] [2023-11-23 08:21:37,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121422514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:37,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055338134] [2023-11-23 08:21:37,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:21:37,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:37,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:37,448 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 08:21:37,451 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 08:21:38,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 08:21:38,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:21:38,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 08:21:38,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-23 08:21:38,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:21:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 08:21:38,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055338134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:21:38,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:21:38,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 7] total 16 [2023-11-23 08:21:38,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889331139] [2023-11-23 08:21:38,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:21:38,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 08:21:38,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:38,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 08:21:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:21:38,669 INFO L87 Difference]: Start difference. First operand 166 states and 226 transitions. Second operand has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 13 states have internal predecessors, (76), 6 states have call successors, (47), 5 states have call predecessors, (47), 4 states have return successors, (43), 5 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-23 08:21:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:40,798 INFO L93 Difference]: Finished difference Result 319 states and 440 transitions. [2023-11-23 08:21:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:21:40,798 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 13 states have internal predecessors, (76), 6 states have call successors, (47), 5 states have call predecessors, (47), 4 states have return successors, (43), 5 states have call predecessors, (43), 6 states have call successors, (43) Word has length 159 [2023-11-23 08:21:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:40,800 INFO L225 Difference]: With dead ends: 319 [2023-11-23 08:21:40,800 INFO L226 Difference]: Without dead ends: 198 [2023-11-23 08:21:40,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:21:40,802 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 198 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:40,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 623 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 08:21:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-23 08:21:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 180. [2023-11-23 08:21:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 103 states have (on average 1.2135922330097086) internal successors, (125), 105 states have internal predecessors, (125), 59 states have call successors, (59), 18 states have call predecessors, (59), 17 states have return successors, (62), 57 states have call predecessors, (62), 58 states have call successors, (62) [2023-11-23 08:21:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 246 transitions. [2023-11-23 08:21:40,817 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 246 transitions. Word has length 159 [2023-11-23 08:21:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:40,817 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 246 transitions. [2023-11-23 08:21:40,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 13 states have internal predecessors, (76), 6 states have call successors, (47), 5 states have call predecessors, (47), 4 states have return successors, (43), 5 states have call predecessors, (43), 6 states have call successors, (43) [2023-11-23 08:21:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 246 transitions. [2023-11-23 08:21:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-23 08:21:40,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:40,819 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:21:40,843 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 08:21:41,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:41,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:41,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash -139747227, now seen corresponding path program 1 times [2023-11-23 08:21:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:41,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074224490] [2023-11-23 08:21:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 08:21:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 08:21:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:21:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:21:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 11 proven. 30 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 08:21:42,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:42,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074224490] [2023-11-23 08:21:42,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074224490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:42,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208734772] [2023-11-23 08:21:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:42,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:42,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:42,397 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 08:21:42,416 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 08:21:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:43,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:43,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 119 proven. 52 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 08:21:43,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:21:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 08:21:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208734772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:21:43,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:21:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2023-11-23 08:21:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147435640] [2023-11-23 08:21:43,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:21:43,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 08:21:43,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 08:21:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:21:43,440 INFO L87 Difference]: Start difference. First operand 180 states and 246 transitions. Second operand has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 17 states have internal predecessors, (128), 11 states have call successors, (74), 6 states have call predecessors, (74), 7 states have return successors, (72), 10 states have call predecessors, (72), 11 states have call successors, (72) [2023-11-23 08:21:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:45,708 INFO L93 Difference]: Finished difference Result 334 states and 453 transitions. [2023-11-23 08:21:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 08:21:45,709 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 17 states have internal predecessors, (128), 11 states have call successors, (74), 6 states have call predecessors, (74), 7 states have return successors, (72), 10 states have call predecessors, (72), 11 states have call successors, (72) Word has length 169 [2023-11-23 08:21:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:45,711 INFO L225 Difference]: With dead ends: 334 [2023-11-23 08:21:45,711 INFO L226 Difference]: Without dead ends: 188 [2023-11-23 08:21:45,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 08:21:45,713 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 395 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:45,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 652 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 08:21:45,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-23 08:21:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2023-11-23 08:21:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 100 states have (on average 1.21) internal successors, (121), 101 states have internal predecessors, (121), 58 states have call successors, (58), 17 states have call predecessors, (58), 16 states have return successors, (58), 57 states have call predecessors, (58), 56 states have call successors, (58) [2023-11-23 08:21:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 237 transitions. [2023-11-23 08:21:45,732 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 237 transitions. Word has length 169 [2023-11-23 08:21:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:45,733 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 237 transitions. [2023-11-23 08:21:45,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 17 states have internal predecessors, (128), 11 states have call successors, (74), 6 states have call predecessors, (74), 7 states have return successors, (72), 10 states have call predecessors, (72), 11 states have call successors, (72) [2023-11-23 08:21:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 237 transitions. [2023-11-23 08:21:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-23 08:21:45,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:45,738 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:21:45,763 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 08:21:45,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:45,956 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:45,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2026452608, now seen corresponding path program 1 times [2023-11-23 08:21:45,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:45,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743508076] [2023-11-23 08:21:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:45,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 08:21:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:21:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:21:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 08:21:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:21:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-23 08:21:48,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:48,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743508076] [2023-11-23 08:21:48,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743508076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:48,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315862921] [2023-11-23 08:21:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:48,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:48,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:48,845 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 08:21:48,862 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 08:21:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:49,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 102 conjunts are in the unsatisfiable core [2023-11-23 08:21:49,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:49,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 08:21:49,613 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 19 treesize of output 1 [2023-11-23 08:21:52,175 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 8 treesize of output 1 [2023-11-23 08:21:54,221 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 17 treesize of output 12 [2023-11-23 08:21:54,515 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:21:54,515 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 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-23 08:21:54,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2023-11-23 08:21:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 61 proven. 143 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 08:21:55,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:21:56,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:21:56,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 49 [2023-11-23 08:21:56,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2023-11-23 08:21:56,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8246 treesize of output 8182 [2023-11-23 08:21:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315862921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:57,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:21:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27] total 40 [2023-11-23 08:21:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982952156] [2023-11-23 08:21:57,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:21:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-23 08:21:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-23 08:21:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2656, Unknown=15, NotChecked=0, Total=2862 [2023-11-23 08:21:57,397 INFO L87 Difference]: Start difference. First operand 175 states and 237 transitions. Second operand has 40 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 32 states have internal predecessors, (98), 16 states have call successors, (50), 10 states have call predecessors, (50), 8 states have return successors, (47), 13 states have call predecessors, (47), 14 states have call successors, (47) [2023-11-23 08:22:02,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:06,810 WARN L539 Checker$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 08:22:08,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:11,074 WARN L539 Checker$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 08:22:15,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:20,609 WARN L539 Checker$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 08:22:22,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:24,850 WARN L539 Checker$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 08:22:26,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:29,040 WARN L539 Checker$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 08:22:31,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:35,935 WARN L539 Checker$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 08:22:37,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:40,147 WARN L539 Checker$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 08:22:42,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:44,233 WARN L539 Checker$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 08:22:46,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:48,341 WARN L539 Checker$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 08:22:52,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:54,206 WARN L539 Checker$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 08:22:56,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:58,788 WARN L539 Checker$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 08:23:07,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:10,199 WARN L539 Checker$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 08:23:12,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:14,517 WARN L539 Checker$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 08:23:18,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:20,582 WARN L539 Checker$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 08:23:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:23:22,664 INFO L93 Difference]: Finished difference Result 835 states and 1177 transitions. [2023-11-23 08:23:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-11-23 08:23:22,665 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 32 states have internal predecessors, (98), 16 states have call successors, (50), 10 states have call predecessors, (50), 8 states have return successors, (47), 13 states have call predecessors, (47), 14 states have call successors, (47) Word has length 177 [2023-11-23 08:23:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:23:22,670 INFO L225 Difference]: With dead ends: 835 [2023-11-23 08:23:22,670 INFO L226 Difference]: Without dead ends: 727 [2023-11-23 08:23:22,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 312 SyntacticMatches, 13 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4396 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=1798, Invalid=15454, Unknown=40, NotChecked=0, Total=17292 [2023-11-23 08:23:22,677 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 785 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 12856 mSolverCounterSat, 469 mSolverCounterUnsat, 159 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 13484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 12856 IncrementalHoareTripleChecker+Invalid, 159 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:23:22,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2055 Invalid, 13484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [469 Valid, 12856 Invalid, 159 Unknown, 0 Unchecked, 71.3s Time] [2023-11-23 08:23:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-11-23 08:23:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 592. [2023-11-23 08:23:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 363 states have (on average 1.2396694214876034) internal successors, (450), 376 states have internal predecessors, (450), 172 states have call successors, (172), 46 states have call predecessors, (172), 56 states have return successors, (218), 173 states have call predecessors, (218), 165 states have call successors, (218) [2023-11-23 08:23:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 840 transitions. [2023-11-23 08:23:22,749 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 840 transitions. Word has length 177 [2023-11-23 08:23:22,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:23:22,750 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 840 transitions. [2023-11-23 08:23:22,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 32 states have internal predecessors, (98), 16 states have call successors, (50), 10 states have call predecessors, (50), 8 states have return successors, (47), 13 states have call predecessors, (47), 14 states have call successors, (47) [2023-11-23 08:23:22,750 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 840 transitions. [2023-11-23 08:23:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 08:23:22,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:22,760 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:23:22,787 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 08:23:22,975 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 08:23:22,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:22,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -801099208, now seen corresponding path program 1 times [2023-11-23 08:23:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:22,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106652271] [2023-11-23 08:23:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:25,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:23:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:23:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:23:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:23:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:23:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:23:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:23:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:23:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:23:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:23:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:23:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:23:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:23:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:23:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:23:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:23:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:23:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 08:23:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-23 08:23:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 08:23:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 08:23:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 27 proven. 52 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-23 08:23:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106652271] [2023-11-23 08:23:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106652271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226011582] [2023-11-23 08:23:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:26,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:23:26,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:26,681 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 08:23:26,683 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 08:23:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:27,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-23 08:23:27,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:23:27,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 08:23:27,453 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 19 treesize of output 1 [2023-11-23 08:23:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 08:23:27,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:23:27,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226011582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:23:27,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:23:27,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 29 [2023-11-23 08:23:27,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727637102] [2023-11-23 08:23:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:23:27,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:23:27,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:23:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2023-11-23 08:23:27,779 INFO L87 Difference]: Start difference. First operand 592 states and 840 transitions. Second operand has 13 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-23 08:23:31,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:33,432 WARN L539 Checker$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 08:23:35,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:37,762 WARN L539 Checker$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 08:23:39,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:41,833 WARN L539 Checker$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 08:23:43,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:45,885 WARN L539 Checker$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 08:23:47,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:49,976 WARN L539 Checker$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 08:23:52,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:54,042 WARN L539 Checker$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 08:23:56,056 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 08:23:56,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:23:56,109 INFO L93 Difference]: Finished difference Result 1207 states and 1704 transitions. [2023-11-23 08:23:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 08:23:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 181 [2023-11-23 08:23:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:23:56,114 INFO L225 Difference]: With dead ends: 1207 [2023-11-23 08:23:56,114 INFO L226 Difference]: Without dead ends: 619 [2023-11-23 08:23:56,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 08:23:56,117 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 108 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 31 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:23:56,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1151 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 464 Invalid, 13 Unknown, 0 Unchecked, 28.1s Time] [2023-11-23 08:23:56,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-11-23 08:23:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2023-11-23 08:23:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 385 states have (on average 1.2415584415584415) internal successors, (478), 399 states have internal predecessors, (478), 172 states have call successors, (172), 48 states have call predecessors, (172), 59 states have return successors, (219), 173 states have call predecessors, (219), 165 states have call successors, (219) [2023-11-23 08:23:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 869 transitions. [2023-11-23 08:23:56,196 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 869 transitions. Word has length 181 [2023-11-23 08:23:56,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:23:56,196 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 869 transitions. [2023-11-23 08:23:56,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-23 08:23:56,197 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 869 transitions. [2023-11-23 08:23:56,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-23 08:23:56,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:56,200 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:23:56,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 08:23:56,416 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 08:23:56,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:56,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:56,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1412486894, now seen corresponding path program 2 times [2023-11-23 08:23:56,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:56,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461901725] [2023-11-23 08:23:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:56,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:23:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:23:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:23:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:23:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:23:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:23:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:23:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:23:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:23:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:23:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:23:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:23:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:23:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:23:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:23:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:23:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:23:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 08:23:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:23:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:23:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-23 08:23:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-11-23 08:23:57,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:57,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461901725] [2023-11-23 08:23:57,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461901725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:57,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302393537] [2023-11-23 08:23:57,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:23:57,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:23:57,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:57,740 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 08:23:57,741 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 08:23:58,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:23:58,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:23:58,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 08:23:58,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:23:58,508 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 19 treesize of output 1 [2023-11-23 08:23:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-23 08:23:58,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:23:58,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302393537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:23:58,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:23:58,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2023-11-23 08:23:58,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262375603] [2023-11-23 08:23:58,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:23:58,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:23:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:23:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:23:58,729 INFO L87 Difference]: Start difference. First operand 617 states and 869 transitions. Second operand has 12 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 4 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 08:24:01,892 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 08:24:03,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:06,148 WARN L539 Checker$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 08:24:08,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:10,190 WARN L539 Checker$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 08:24:12,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:14,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:16,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:18,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:20,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:22,392 WARN L539 Checker$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 08:24:24,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:26,453 WARN L539 Checker$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 08:24:26,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:26,484 INFO L93 Difference]: Finished difference Result 1181 states and 1671 transitions. [2023-11-23 08:24:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:24:26,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 4 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 185 [2023-11-23 08:24:26,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:26,489 INFO L225 Difference]: With dead ends: 1181 [2023-11-23 08:24:26,489 INFO L226 Difference]: Without dead ends: 614 [2023-11-23 08:24:26,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:24:26,493 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 95 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 9 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:26,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 791 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 374 Invalid, 13 Unknown, 0 Unchecked, 27.6s Time] [2023-11-23 08:24:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-11-23 08:24:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 612. [2023-11-23 08:24:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 381 states have (on average 1.2414698162729658) internal successors, (473), 394 states have internal predecessors, (473), 172 states have call successors, (172), 48 states have call predecessors, (172), 58 states have return successors, (218), 173 states have call predecessors, (218), 165 states have call successors, (218) [2023-11-23 08:24:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 863 transitions. [2023-11-23 08:24:26,554 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 863 transitions. Word has length 185 [2023-11-23 08:24:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:26,555 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 863 transitions. [2023-11-23 08:24:26,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 4 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 08:24:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 863 transitions. [2023-11-23 08:24:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-23 08:24:26,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:26,557 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 08:24:26,582 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 08:24:26,776 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 08:24:26,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:26,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:26,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1348833188, now seen corresponding path program 3 times [2023-11-23 08:24:26,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:26,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503549912] [2023-11-23 08:24:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:26,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:24:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:24:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:24:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:24:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:24:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:24:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:27,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:24:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:24:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:24:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:24:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:24:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:24:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 08:24:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 08:24:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 08:24:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 08:24:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-23 08:24:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 08:24:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:24:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-23 08:24:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:28,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503549912] [2023-11-23 08:24:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503549912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:24:28,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519911304] [2023-11-23 08:24:28,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:24:28,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:24:28,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:24:28,129 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 08:24:28,133 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 08:24:28,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 08:24:28,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:24:28,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:24:28,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:24:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-23 08:24:28,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:24:28,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519911304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:24:28,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:24:28,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 16 [2023-11-23 08:24:28,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763395274] [2023-11-23 08:24:28,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:24:28,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:24:28,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:24:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:24:28,827 INFO L87 Difference]: Start difference. First operand 612 states and 863 transitions. Second operand has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 08:24:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:29,789 INFO L93 Difference]: Finished difference Result 1246 states and 1785 transitions. [2023-11-23 08:24:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:24:29,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 189 [2023-11-23 08:24:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:29,794 INFO L225 Difference]: With dead ends: 1246 [2023-11-23 08:24:29,794 INFO L226 Difference]: Without dead ends: 640 [2023-11-23 08:24:29,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:24:29,798 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 13 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:29,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1454 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:24:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-11-23 08:24:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 616. [2023-11-23 08:24:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 384 states have (on average 1.2395833333333333) internal successors, (476), 398 states have internal predecessors, (476), 172 states have call successors, (172), 48 states have call predecessors, (172), 59 states have return successors, (219), 173 states have call predecessors, (219), 165 states have call successors, (219) [2023-11-23 08:24:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 867 transitions. [2023-11-23 08:24:29,857 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 867 transitions. Word has length 189 [2023-11-23 08:24:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:29,858 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 867 transitions. [2023-11-23 08:24:29,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 08:24:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 867 transitions. [2023-11-23 08:24:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-23 08:24:29,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:29,861 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:24:29,887 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 08:24:30,084 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 08:24:30,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:30,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2038330913, now seen corresponding path program 1 times [2023-11-23 08:24:30,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:30,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085898139] [2023-11-23 08:24:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:30,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:24:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:24:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:24:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:24:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:24:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:24:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:24:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:24:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:24:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:24:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:24:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:24:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:24:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:24:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 08:24:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 08:24:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:24:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:24:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 08:24:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-23 08:24:31,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:31,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085898139] [2023-11-23 08:24:31,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085898139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:24:31,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047176530] [2023-11-23 08:24:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:31,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:24:31,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:24:31,283 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 08:24:31,302 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 08:24:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:31,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 3067 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-23 08:24:31,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:24:32,155 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 19 treesize of output 1 [2023-11-23 08:24:32,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-11-23 08:24:32,602 INFO L349 Elim1Store]: treesize reduction 150, result has 18.9 percent of original size [2023-11-23 08:24:32,602 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 1 case distinctions, treesize of input 58 treesize of output 48 [2023-11-23 08:24:32,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-11-23 08:24:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 214 proven. 76 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 08:24:33,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:24:33,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-23 08:24:33,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:24:33,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 24 treesize of output 14 [2023-11-23 08:24:33,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-23 08:24:34,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-11-23 08:24:34,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-11-23 08:24:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 42 proven. 22 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-23 08:24:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047176530] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:24:34,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:24:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 19] total 47 [2023-11-23 08:24:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947469911] [2023-11-23 08:24:34,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:24:34,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-23 08:24:34,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-23 08:24:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2001, Unknown=0, NotChecked=0, Total=2162 [2023-11-23 08:24:34,547 INFO L87 Difference]: Start difference. First operand 616 states and 867 transitions. Second operand has 47 states, 40 states have (on average 4.85) internal successors, (194), 37 states have internal predecessors, (194), 13 states have call successors, (68), 12 states have call predecessors, (68), 16 states have return successors, (65), 15 states have call predecessors, (65), 13 states have call successors, (65) [2023-11-23 08:24:37,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:38,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:42,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:44,380 WARN L539 Checker$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 08:24:47,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:50,026 WARN L539 Checker$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 08:24:52,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:54,123 WARN L539 Checker$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 08:24:56,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:59,301 WARN L539 Checker$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 08:25:03,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:05,579 WARN L539 Checker$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 08:25:07,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:09,704 WARN L539 Checker$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 08:25:12,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:14,300 WARN L539 Checker$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 08:25:16,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:18,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15