./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness.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 e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:49:02,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:49:02,983 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:49:02,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:49:02,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:49:03,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:49:03,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:49:03,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:49:03,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:49:03,016 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:49:03,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:49:03,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:49:03,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:49:03,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:49:03,018 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:49:03,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:49:03,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:49:03,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:49:03,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:49:03,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:49:03,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:49:03,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:49:03,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:49:03,020 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:49:03,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:49:03,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:49:03,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:49:03,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:49:03,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:49:03,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:49:03,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:49:03,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:49:03,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:49:03,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:49:03,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:49:03,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:49:03,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:49:03,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:49:03,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:49:03,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:49:03,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:49:03,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:49:03,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:49:03,253 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:49:03,254 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:49:03,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2023-11-23 06:49:04,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:49:04,755 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:49:04,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2023-11-23 06:49:04,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d095c92cb/505b5b5fcad845afbb2f69dfce6ec891/FLAGee0130700 [2023-11-23 06:49:04,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d095c92cb/505b5b5fcad845afbb2f69dfce6ec891 [2023-11-23 06:49:04,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:49:04,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:49:04,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:49:04,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:49:04,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:49:04,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:49:04" (1/1) ... [2023-11-23 06:49:04,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a69a996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:04, skipping insertion in model container [2023-11-23 06:49:04,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:49:04" (1/1) ... [2023-11-23 06:49:04,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:49:05,161 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_clean_up_secure_harness.i[4502,4515] [2023-11-23 06:49:05,167 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_clean_up_secure_harness.i[4562,4575] [2023-11-23 06:49:05,710 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,714 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:05,951 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:49:05,953 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:49:05,954 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:49:05,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:49:05,959 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:49:05,959 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:49:05,960 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:49:05,961 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:49:05,962 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:49:05,963 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:49:06,111 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,115 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:49:06,230 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:49:06,240 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_clean_up_secure_harness.i[4502,4515] [2023-11-23 06:49:06,242 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_clean_up_secure_harness.i[4562,4575] [2023-11-23 06:49:06,276 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,277 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,280 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,280 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,288 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,328 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:49:06,329 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:49:06,329 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:49:06,330 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:49:06,330 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:49:06,331 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:49:06,331 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:49:06,331 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:49:06,332 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:49:06,333 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:49:06,395 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8073] [2023-11-23 06:49:06,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:49:06,404 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8559-8570] [2023-11-23 06:49:06,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:49:06,576 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,576 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,576 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,576 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,577 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,577 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,577 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,577 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,577 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,577 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,578 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,578 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,578 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,578 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,579 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,579 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,579 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,579 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:49:06,585 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:49:06,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06 WrapperNode [2023-11-23 06:49:06,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:49:06,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:49:06,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:49:06,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:49:06,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,718 INFO L138 Inliner]: procedures = 690, calls = 2507, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 815 [2023-11-23 06:49:06,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:49:06,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:49:06,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:49:06,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:49:06,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,800 INFO L188 MemorySlicer]: Split 532 memory accesses to 6 slices as follows [2, 7, 256, 236, 28, 3]. 48 percent of accesses are in the largest equivalence class. The 502 initializations are split as follows [2, 5, 256, 236, 0, 3]. The 8 writes are split as follows [0, 1, 0, 0, 7, 0]. [2023-11-23 06:49:06,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:49:06,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:49:06,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:49:06,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:49:06,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (1/1) ... [2023-11-23 06:49:06,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:49:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:06,909 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 06:49:06,916 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 06:49:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:49:06,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:49:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:49:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:49:06,953 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:49:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:49:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:49:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:49:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:49:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:49:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:49:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:49:06,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:49:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2023-11-23 06:49:06,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2023-11-23 06:49:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:49:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:49:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:49:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:49:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:49:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:49:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:49:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:49:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:49:06,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:49:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:49:06,956 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:49:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 06:49:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 06:49:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:49:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:49:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:49:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:49:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:49:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:49:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:49:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:49:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:49:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:49:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:49:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:49:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:49:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:49:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:49:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:49:06,959 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:49:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:49:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:49:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:49:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:49:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:49:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:49:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 06:49:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 06:49:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 06:49:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 06:49:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:49:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:49:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:49:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:49:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:49:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:49:07,256 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:49:07,258 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:49:07,871 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:49:08,037 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:49:08,037 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 06:49:08,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:49:08 BoogieIcfgContainer [2023-11-23 06:49:08,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:49:08,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:49:08,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:49:08,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:49:08,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:49:04" (1/3) ... [2023-11-23 06:49:08,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9564b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:49:08, skipping insertion in model container [2023-11-23 06:49:08,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:49:06" (2/3) ... [2023-11-23 06:49:08,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9564b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:49:08, skipping insertion in model container [2023-11-23 06:49:08,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:49:08" (3/3) ... [2023-11-23 06:49:08,049 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2023-11-23 06:49:08,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:49:08,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:49:08,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:49:08,119 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;@7c838f3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:49:08,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:49:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 64 states have internal predecessors, (81), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-23 06:49:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 06:49:08,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:08,136 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:08,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:08,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1982467764, now seen corresponding path program 1 times [2023-11-23 06:49:08,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:08,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149130252] [2023-11-23 06:49:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:49:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:49:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:49:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:49:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 06:49:09,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149130252] [2023-11-23 06:49:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149130252] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:09,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201126041] [2023-11-23 06:49:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:09,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:09,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:09,289 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 06:49:09,322 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 06:49:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:49:09,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 06:49:09,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:09,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201126041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:09,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:09,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 06:49:09,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857242441] [2023-11-23 06:49:09,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:09,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:49:09,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:09,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:49:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:49:09,826 INFO L87 Difference]: Start difference. First operand has 103 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 64 states have internal predecessors, (81), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 06:49:10,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:10,164 INFO L93 Difference]: Finished difference Result 206 states and 298 transitions. [2023-11-23 06:49:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:49:10,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2023-11-23 06:49:10,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:10,173 INFO L225 Difference]: With dead ends: 206 [2023-11-23 06:49:10,173 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 06:49:10,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:49:10,179 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 34 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:10,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 373 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:49:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 06:49:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-23 06:49:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2023-11-23 06:49:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 138 transitions. [2023-11-23 06:49:10,216 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 138 transitions. Word has length 68 [2023-11-23 06:49:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:10,216 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 138 transitions. [2023-11-23 06:49:10,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 06:49:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 138 transitions. [2023-11-23 06:49:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 06:49:10,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:10,219 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:10,243 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 06:49:10,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 06:49:10,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:10,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash 435423449, now seen corresponding path program 1 times [2023-11-23 06:49:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168278170] [2023-11-23 06:49:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:49:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:49:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:49:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:49:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:49:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168278170] [2023-11-23 06:49:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168278170] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722450326] [2023-11-23 06:49:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:10,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:10,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:10,841 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 06:49:10,864 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 06:49:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:49:11,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 06:49:11,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:11,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722450326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:11,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:11,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:49:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557769736] [2023-11-23 06:49:11,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:11,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:49:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:49:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:49:11,292 INFO L87 Difference]: Start difference. First operand 103 states and 138 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:49:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:11,552 INFO L93 Difference]: Finished difference Result 209 states and 291 transitions. [2023-11-23 06:49:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:49:11,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2023-11-23 06:49:11,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:11,572 INFO L225 Difference]: With dead ends: 209 [2023-11-23 06:49:11,572 INFO L226 Difference]: Without dead ends: 125 [2023-11-23 06:49:11,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:49:11,574 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 42 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:11,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 358 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:49:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-23 06:49:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 105. [2023-11-23 06:49:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 67 states have internal predecessors, (80), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2023-11-23 06:49:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 140 transitions. [2023-11-23 06:49:11,596 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 140 transitions. Word has length 74 [2023-11-23 06:49:11,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:11,597 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 140 transitions. [2023-11-23 06:49:11,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:49:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 140 transitions. [2023-11-23 06:49:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 06:49:11,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:11,600 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:11,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 06:49:11,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 06:49:11,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:11,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:11,843 INFO L85 PathProgramCache]: Analyzing trace with hash 82335067, now seen corresponding path program 1 times [2023-11-23 06:49:11,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:11,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320997424] [2023-11-23 06:49:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:11,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:49:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:49:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:49:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:49:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:49:12,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320997424] [2023-11-23 06:49:12,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320997424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627753448] [2023-11-23 06:49:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:12,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:12,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:12,141 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 06:49:12,152 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 06:49:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 2524 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:49:12,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 06:49:12,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627753448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:12,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:12,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:49:12,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877596310] [2023-11-23 06:49:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:49:12,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:49:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:49:12,633 INFO L87 Difference]: Start difference. First operand 105 states and 140 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:49:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:12,978 INFO L93 Difference]: Finished difference Result 201 states and 278 transitions. [2023-11-23 06:49:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:49:12,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2023-11-23 06:49:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:12,980 INFO L225 Difference]: With dead ends: 201 [2023-11-23 06:49:12,980 INFO L226 Difference]: Without dead ends: 115 [2023-11-23 06:49:12,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:49:12,981 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 29 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:12,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 339 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:49:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-23 06:49:12,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2023-11-23 06:49:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 69 states have internal predecessors, (82), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2023-11-23 06:49:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 142 transitions. [2023-11-23 06:49:12,993 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 142 transitions. Word has length 74 [2023-11-23 06:49:12,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:12,993 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 142 transitions. [2023-11-23 06:49:12,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:49:12,994 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 142 transitions. [2023-11-23 06:49:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 06:49:12,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:12,995 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:13,016 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 06:49:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:13,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:13,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:13,212 INFO L85 PathProgramCache]: Analyzing trace with hash 450942167, now seen corresponding path program 1 times [2023-11-23 06:49:13,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:13,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386003745] [2023-11-23 06:49:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:13,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:49:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:49:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:49:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:49:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 06:49:13,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:13,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386003745] [2023-11-23 06:49:13,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386003745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:13,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541935752] [2023-11-23 06:49:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:13,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:13,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:13,877 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 06:49:13,903 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 06:49:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:14,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:49:14,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 06:49:14,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:14,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541935752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:14,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:14,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-23 06:49:14,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767130611] [2023-11-23 06:49:14,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:49:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:49:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:49:14,325 INFO L87 Difference]: Start difference. First operand 107 states and 142 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 06:49:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:14,924 INFO L93 Difference]: Finished difference Result 192 states and 255 transitions. [2023-11-23 06:49:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:49:14,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 74 [2023-11-23 06:49:14,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:14,925 INFO L225 Difference]: With dead ends: 192 [2023-11-23 06:49:14,925 INFO L226 Difference]: Without dead ends: 107 [2023-11-23 06:49:14,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:49:14,926 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 43 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:14,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 467 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:49:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-23 06:49:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-23 06:49:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 69 states have internal predecessors, (82), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2023-11-23 06:49:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2023-11-23 06:49:14,934 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 74 [2023-11-23 06:49:14,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:14,934 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2023-11-23 06:49:14,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 06:49:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2023-11-23 06:49:14,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 06:49:14,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:14,935 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:14,963 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 06:49:15,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:15,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:15,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:15,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1566664812, now seen corresponding path program 2 times [2023-11-23 06:49:15,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:15,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009985957] [2023-11-23 06:49:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:15,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:49:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:49:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:49:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 06:49:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:15,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009985957] [2023-11-23 06:49:15,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009985957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:15,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42591452] [2023-11-23 06:49:15,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:49:15,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:15,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:15,560 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 06:49:15,584 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 06:49:16,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:49:16,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:49:16,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 06:49:16,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:16,140 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-11-23 06:49:16,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-11-23 06:49:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 06:49:16,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:16,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42591452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:16,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:16,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-23 06:49:16,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937398787] [2023-11-23 06:49:16,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:16,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:49:16,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:16,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:49:16,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:49:16,324 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 06:49:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:17,065 INFO L93 Difference]: Finished difference Result 187 states and 244 transitions. [2023-11-23 06:49:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:49:17,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 80 [2023-11-23 06:49:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:17,066 INFO L225 Difference]: With dead ends: 187 [2023-11-23 06:49:17,066 INFO L226 Difference]: Without dead ends: 107 [2023-11-23 06:49:17,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:49:17,067 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 52 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:17,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 651 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:49:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-23 06:49:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-23 06:49:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 69 states have internal predecessors, (82), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2023-11-23 06:49:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 138 transitions. [2023-11-23 06:49:17,077 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 138 transitions. Word has length 80 [2023-11-23 06:49:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:17,077 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 138 transitions. [2023-11-23 06:49:17,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 06:49:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 138 transitions. [2023-11-23 06:49:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 06:49:17,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:17,079 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:17,099 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 06:49:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:17,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:17,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash -861552116, now seen corresponding path program 1 times [2023-11-23 06:49:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:17,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748068975] [2023-11-23 06:49:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:49:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:49:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 06:49:17,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748068975] [2023-11-23 06:49:17,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748068975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:17,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:49:17,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:49:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16816305] [2023-11-23 06:49:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:17,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:49:17,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:17,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:49:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:49:17,901 INFO L87 Difference]: Start difference. First operand 107 states and 138 transitions. Second operand has 9 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 06:49:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:18,915 INFO L93 Difference]: Finished difference Result 120 states and 156 transitions. [2023-11-23 06:49:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:49:18,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 92 [2023-11-23 06:49:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:18,916 INFO L225 Difference]: With dead ends: 120 [2023-11-23 06:49:18,916 INFO L226 Difference]: Without dead ends: 118 [2023-11-23 06:49:18,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:49:18,917 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 89 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:18,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 296 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:49:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-23 06:49:18,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2023-11-23 06:49:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 75 states have internal predecessors, (87), 29 states have call successors, (29), 11 states have call predecessors, (29), 13 states have return successors, (35), 28 states have call predecessors, (35), 28 states have call successors, (35) [2023-11-23 06:49:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 151 transitions. [2023-11-23 06:49:18,926 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 151 transitions. Word has length 92 [2023-11-23 06:49:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:18,926 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 151 transitions. [2023-11-23 06:49:18,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 06:49:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 151 transitions. [2023-11-23 06:49:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 06:49:18,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:18,927 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:18,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 06:49:18,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:18,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash -289777856, now seen corresponding path program 1 times [2023-11-23 06:49:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423777773] [2023-11-23 06:49:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:18,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:49:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:49:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 06:49:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423777773] [2023-11-23 06:49:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423777773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:19,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:49:19,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 06:49:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896226104] [2023-11-23 06:49:19,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:19,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:49:19,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:49:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:49:19,800 INFO L87 Difference]: Start difference. First operand 115 states and 151 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:49:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:20,663 INFO L93 Difference]: Finished difference Result 193 states and 254 transitions. [2023-11-23 06:49:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:49:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2023-11-23 06:49:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:20,664 INFO L225 Difference]: With dead ends: 193 [2023-11-23 06:49:20,664 INFO L226 Difference]: Without dead ends: 128 [2023-11-23 06:49:20,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:49:20,665 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 101 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:20,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 199 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:49:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-23 06:49:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 121. [2023-11-23 06:49:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 81 states have internal predecessors, (93), 29 states have call successors, (29), 11 states have call predecessors, (29), 14 states have return successors, (40), 28 states have call predecessors, (40), 28 states have call successors, (40) [2023-11-23 06:49:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2023-11-23 06:49:20,675 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 96 [2023-11-23 06:49:20,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:20,675 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2023-11-23 06:49:20,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:49:20,675 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2023-11-23 06:49:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 06:49:20,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:20,686 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:20,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 06:49:20,686 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:20,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash 411286722, now seen corresponding path program 1 times [2023-11-23 06:49:20,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:20,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957829062] [2023-11-23 06:49:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:49:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:49:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 06:49:21,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:21,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957829062] [2023-11-23 06:49:21,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957829062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:21,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:49:21,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:49:21,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606550222] [2023-11-23 06:49:21,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:21,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:49:21,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:49:21,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:49:21,276 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 06:49:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:21,893 INFO L93 Difference]: Finished difference Result 240 states and 335 transitions. [2023-11-23 06:49:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:49:21,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 96 [2023-11-23 06:49:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:21,895 INFO L225 Difference]: With dead ends: 240 [2023-11-23 06:49:21,895 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 06:49:21,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:49:21,896 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 84 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:21,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 184 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:49:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 06:49:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2023-11-23 06:49:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 80 states have (on average 1.2) internal successors, (96), 84 states have internal predecessors, (96), 29 states have call successors, (29), 11 states have call predecessors, (29), 14 states have return successors, (40), 28 states have call predecessors, (40), 28 states have call successors, (40) [2023-11-23 06:49:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2023-11-23 06:49:21,909 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 96 [2023-11-23 06:49:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:21,910 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2023-11-23 06:49:21,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 06:49:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2023-11-23 06:49:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 06:49:21,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:21,911 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:21,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 06:49:21,912 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:21,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:21,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1851494970, now seen corresponding path program 1 times [2023-11-23 06:49:21,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:21,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422636248] [2023-11-23 06:49:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:49:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:49:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 06:49:23,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422636248] [2023-11-23 06:49:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422636248] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439054645] [2023-11-23 06:49:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:23,102 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 06:49:23,120 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 06:49:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:23,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 06:49:23,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:23,597 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 06:49:23,988 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 20 treesize of output 8 [2023-11-23 06:49:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 06:49:24,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:24,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439054645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:24,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:24,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 20 [2023-11-23 06:49:24,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993647788] [2023-11-23 06:49:24,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:24,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:49:24,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:24,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:49:24,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:49:24,003 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-23 06:49:26,275 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 06:49:28,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:30,424 WARN L539 Checker$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 06:49:32,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:34,587 WARN L539 Checker$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 06:49:36,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:38,629 WARN L539 Checker$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 06:49:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:38,639 INFO L93 Difference]: Finished difference Result 243 states and 309 transitions. [2023-11-23 06:49:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:49:38,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 96 [2023-11-23 06:49:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:38,640 INFO L225 Difference]: With dead ends: 243 [2023-11-23 06:49:38,640 INFO L226 Difference]: Without dead ends: 160 [2023-11-23 06:49:38,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 97 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2023-11-23 06:49:38,641 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 39 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 5 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:38,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 727 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 275 Invalid, 7 Unknown, 0 Unchecked, 14.6s Time] [2023-11-23 06:49:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-23 06:49:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 151. [2023-11-23 06:49:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 105 states have (on average 1.2) internal successors, (126), 109 states have internal predecessors, (126), 29 states have call successors, (29), 13 states have call predecessors, (29), 16 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-23 06:49:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 189 transitions. [2023-11-23 06:49:38,657 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 189 transitions. Word has length 96 [2023-11-23 06:49:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:38,658 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 189 transitions. [2023-11-23 06:49:38,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-23 06:49:38,659 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 189 transitions. [2023-11-23 06:49:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 06:49:38,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:38,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:38,677 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 06:49:38,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:38,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:38,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash -492577848, now seen corresponding path program 1 times [2023-11-23 06:49:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:38,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410087959] [2023-11-23 06:49:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:38,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:49:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 06:49:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:49:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 06:49:40,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:40,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410087959] [2023-11-23 06:49:40,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410087959] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:40,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091876008] [2023-11-23 06:49:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:40,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:40,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:40,565 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 06:49:40,610 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 06:49:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:41,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-23 06:49:41,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:41,097 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 06:49:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 06:49:41,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:41,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091876008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:41,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2023-11-23 06:49:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044364681] [2023-11-23 06:49:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:41,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:49:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:49:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:49:41,528 INFO L87 Difference]: Start difference. First operand 151 states and 189 transitions. Second operand has 12 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:49:43,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:46,620 WARN L539 Checker$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 06:49:48,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:50,947 WARN L539 Checker$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 06:49:52,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:54,990 WARN L539 Checker$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 06:49:57,044 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 06:49:57,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:57,057 INFO L93 Difference]: Finished difference Result 286 states and 360 transitions. [2023-11-23 06:49:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:49:57,057 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 111 [2023-11-23 06:49:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:57,058 INFO L225 Difference]: With dead ends: 286 [2023-11-23 06:49:57,058 INFO L226 Difference]: Without dead ends: 154 [2023-11-23 06:49:57,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2023-11-23 06:49:57,059 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 81 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:57,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 553 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 344 Invalid, 7 Unknown, 0 Unchecked, 15.4s Time] [2023-11-23 06:49:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-23 06:49:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-23 06:49:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 112 states have internal predecessors, (128), 29 states have call successors, (29), 13 states have call predecessors, (29), 17 states have return successors, (35), 28 states have call predecessors, (35), 28 states have call successors, (35) [2023-11-23 06:49:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 192 transitions. [2023-11-23 06:49:57,071 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 192 transitions. Word has length 111 [2023-11-23 06:49:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:57,071 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 192 transitions. [2023-11-23 06:49:57,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:49:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 192 transitions. [2023-11-23 06:49:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 06:49:57,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:57,073 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:57,090 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 06:49:57,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:57,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:57,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1615129032, now seen corresponding path program 1 times [2023-11-23 06:49:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:57,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361754423] [2023-11-23 06:49:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:57,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:57,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:49:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:49:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:49:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:49:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:49:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 06:49:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 06:49:58,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:58,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361754423] [2023-11-23 06:49:58,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361754423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:58,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994525597] [2023-11-23 06:49:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:58,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:58,146 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 06:49:58,147 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 06:49:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:58,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 06:49:58,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:58,638 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 06:49:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 06:49:59,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:59,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994525597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:59,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:59,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2023-11-23 06:49:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288329432] [2023-11-23 06:49:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:59,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:49:59,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:49:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-11-23 06:49:59,447 INFO L87 Difference]: Start difference. First operand 154 states and 192 transitions. Second operand has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-23 06:50:02,479 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 06:50:04,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:06,764 WARN L539 Checker$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 06:50:09,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:11,128 WARN L539 Checker$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 06:50:13,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:15,197 WARN L539 Checker$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 06:50:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:15,209 INFO L93 Difference]: Finished difference Result 255 states and 318 transitions. [2023-11-23 06:50:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:50:15,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 119 [2023-11-23 06:50:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:15,210 INFO L225 Difference]: With dead ends: 255 [2023-11-23 06:50:15,210 INFO L226 Difference]: Without dead ends: 151 [2023-11-23 06:50:15,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 125 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:50:15,211 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 64 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:15,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 868 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 458 Invalid, 7 Unknown, 0 Unchecked, 15.7s Time] [2023-11-23 06:50:15,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-23 06:50:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2023-11-23 06:50:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 107 states have internal predecessors, (123), 29 states have call successors, (29), 13 states have call predecessors, (29), 16 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-23 06:50:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 186 transitions. [2023-11-23 06:50:15,221 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 186 transitions. Word has length 119 [2023-11-23 06:50:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:15,221 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 186 transitions. [2023-11-23 06:50:15,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-23 06:50:15,226 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 186 transitions. [2023-11-23 06:50:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 06:50:15,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:15,229 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:15,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 06:50:15,444 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,SelfDestructingSolverStorable10 [2023-11-23 06:50:15,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:15,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:15,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1136407292, now seen corresponding path program 1 times [2023-11-23 06:50:15,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:15,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509540089] [2023-11-23 06:50:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:15,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:50:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:50:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:50:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:50:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:50:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:50:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 06:50:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 06:50:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509540089] [2023-11-23 06:50:16,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509540089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:50:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524018037] [2023-11-23 06:50:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:16,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:16,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:50:16,147 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 06:50:16,199 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 06:50:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:16,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:50:16,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:50:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 06:50:16,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:50:16,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524018037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:50:16,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:50:16,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 13 [2023-11-23 06:50:16,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791300300] [2023-11-23 06:50:16,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:50:16,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:50:16,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:16,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:50:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:50:16,649 INFO L87 Difference]: Start difference. First operand 149 states and 186 transitions. Second operand has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 06:50:17,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:17,123 INFO L93 Difference]: Finished difference Result 258 states and 324 transitions. [2023-11-23 06:50:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:50:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2023-11-23 06:50:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:17,125 INFO L225 Difference]: With dead ends: 258 [2023-11-23 06:50:17,125 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 06:50:17,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:50:17,126 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 13 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:17,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 824 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:50:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 06:50:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2023-11-23 06:50:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 111 states have internal predecessors, (126), 29 states have call successors, (29), 13 states have call predecessors, (29), 17 states have return successors, (36), 28 states have call predecessors, (36), 28 states have call successors, (36) [2023-11-23 06:50:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 191 transitions. [2023-11-23 06:50:17,133 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 191 transitions. Word has length 123 [2023-11-23 06:50:17,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:17,133 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 191 transitions. [2023-11-23 06:50:17,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 06:50:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 191 transitions. [2023-11-23 06:50:17,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 06:50:17,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:17,134 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:17,166 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 06:50:17,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:17,349 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:17,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:17,349 INFO L85 PathProgramCache]: Analyzing trace with hash 374710999, now seen corresponding path program 1 times [2023-11-23 06:50:17,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:17,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975529888] [2023-11-23 06:50:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:17,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:50:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:50:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:50:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:50:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:50:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:50:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 06:50:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 06:50:18,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975529888] [2023-11-23 06:50:18,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975529888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:50:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496788227] [2023-11-23 06:50:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:50:18,064 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 06:50:18,068 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 06:50:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:50:18,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:50:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 06:50:18,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:50:18,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496788227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:50:18,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:50:18,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 13 [2023-11-23 06:50:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183656347] [2023-11-23 06:50:18,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:50:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:50:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:50:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:50:18,510 INFO L87 Difference]: Start difference. First operand 153 states and 191 transitions. Second operand has 9 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 06:50:19,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:19,287 INFO L93 Difference]: Finished difference Result 288 states and 358 transitions. [2023-11-23 06:50:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:50:19,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2023-11-23 06:50:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:19,288 INFO L225 Difference]: With dead ends: 288 [2023-11-23 06:50:19,288 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 06:50:19,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:50:19,289 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 13 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:19,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 823 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:50:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 06:50:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2023-11-23 06:50:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 111 states have internal predecessors, (126), 29 states have call successors, (29), 13 states have call predecessors, (29), 17 states have return successors, (35), 28 states have call predecessors, (35), 28 states have call successors, (35) [2023-11-23 06:50:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2023-11-23 06:50:19,296 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 125 [2023-11-23 06:50:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:19,297 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2023-11-23 06:50:19,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 06:50:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2023-11-23 06:50:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 06:50:19,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:19,298 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:19,325 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 06:50:19,498 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,SelfDestructingSolverStorable12 [2023-11-23 06:50:19,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:19,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1580990372, now seen corresponding path program 2 times [2023-11-23 06:50:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257904703] [2023-11-23 06:50:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:19,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:50:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:50:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:50:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:50:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:50:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:50:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 06:50:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 06:50:20,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:20,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257904703] [2023-11-23 06:50:20,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257904703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:50:20,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512522922] [2023-11-23 06:50:20,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:50:20,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:20,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:50:20,214 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 06:50:20,274 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 06:50:20,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:50:20,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:50:20,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-23 06:50:20,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:50:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 114 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 06:50:21,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:50:21,667 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:50:21,668 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 19 treesize of output 18 [2023-11-23 06:50:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 15 proven. 52 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 06:50:21,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512522922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:50:21,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:50:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 13] total 31 [2023-11-23 06:50:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141535965] [2023-11-23 06:50:21,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:50:21,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 06:50:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 06:50:21,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2023-11-23 06:50:21,698 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand has 31 states, 27 states have (on average 5.481481481481482) internal successors, (148), 24 states have internal predecessors, (148), 10 states have call successors, (38), 7 states have call predecessors, (38), 8 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-23 06:50:25,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:27,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:30,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:32,098 WARN L539 Checker$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 06:50:36,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:38,803 WARN L539 Checker$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 06:50:40,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:43,020 WARN L539 Checker$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 06:50:45,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:47,711 WARN L539 Checker$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 06:50:48,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:48,023 INFO L93 Difference]: Finished difference Result 342 states and 422 transitions. [2023-11-23 06:50:48,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-23 06:50:48,023 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.481481481481482) internal successors, (148), 24 states have internal predecessors, (148), 10 states have call successors, (38), 7 states have call predecessors, (38), 8 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) Word has length 127 [2023-11-23 06:50:48,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:48,024 INFO L225 Difference]: With dead ends: 342 [2023-11-23 06:50:48,024 INFO L226 Difference]: Without dead ends: 195 [2023-11-23 06:50:48,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 255 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=432, Invalid=3228, Unknown=0, NotChecked=0, Total=3660 [2023-11-23 06:50:48,026 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 279 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 81 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:48,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 622 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2593 Invalid, 26 Unknown, 0 Unchecked, 23.9s Time] [2023-11-23 06:50:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-23 06:50:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 149. [2023-11-23 06:50:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 107 states have internal predecessors, (122), 29 states have call successors, (29), 13 states have call predecessors, (29), 16 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-23 06:50:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 185 transitions. [2023-11-23 06:50:48,037 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 185 transitions. Word has length 127 [2023-11-23 06:50:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:48,037 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 185 transitions. [2023-11-23 06:50:48,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.481481481481482) internal successors, (148), 24 states have internal predecessors, (148), 10 states have call successors, (38), 7 states have call predecessors, (38), 8 states have return successors, (32), 8 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-23 06:50:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 185 transitions. [2023-11-23 06:50:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 06:50:48,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:48,038 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:48,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 06:50:48,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 06:50:48,252 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:48,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:48,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2083013769, now seen corresponding path program 3 times [2023-11-23 06:50:48,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:48,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761773159] [2023-11-23 06:50:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:50:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:50:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:50:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:50:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:50:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:49,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:50:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 06:50:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 06:50:50,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761773159] [2023-11-23 06:50:50,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761773159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:50:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073401058] [2023-11-23 06:50:50,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 06:50:50,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:50,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:50:50,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:50:50,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 06:50:50,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 06:50:50,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:50:50,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 06:50:50,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:51:03,157 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 24 treesize of output 12 [2023-11-23 06:51:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 88 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:51:03,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:51:03,491 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:51:03,491 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 24 treesize of output 19 [2023-11-23 06:51:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 06:51:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073401058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:51:03,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:51:03,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 11] total 33 [2023-11-23 06:51:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494791570] [2023-11-23 06:51:03,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:51:03,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-23 06:51:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:51:03,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-23 06:51:03,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=955, Unknown=4, NotChecked=0, Total=1056 [2023-11-23 06:51:03,514 INFO L87 Difference]: Start difference. First operand 149 states and 185 transitions. Second operand has 33 states, 27 states have (on average 4.185185185185185) internal successors, (113), 28 states have internal predecessors, (113), 16 states have call successors, (34), 7 states have call predecessors, (34), 9 states have return successors, (31), 12 states have call predecessors, (31), 16 states have call successors, (31) [2023-11-23 06:51:06,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:09,269 WARN L539 Checker$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 06:51:11,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:13,393 WARN L539 Checker$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 06:51:15,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:20,311 WARN L539 Checker$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 06:51:22,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:24,846 WARN L539 Checker$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 06:51:27,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:34,085 WARN L539 Checker$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 06:51:36,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:38,247 WARN L539 Checker$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 06:51:40,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:42,446 WARN L539 Checker$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 06:51:44,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:46,942 WARN L539 Checker$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 06:51:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:51:47,039 INFO L93 Difference]: Finished difference Result 480 states and 623 transitions. [2023-11-23 06:51:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-23 06:51:47,040 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 4.185185185185185) internal successors, (113), 28 states have internal predecessors, (113), 16 states have call successors, (34), 7 states have call predecessors, (34), 9 states have return successors, (31), 12 states have call predecessors, (31), 16 states have call successors, (31) Word has length 129 [2023-11-23 06:51:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:51:47,042 INFO L225 Difference]: With dead ends: 480 [2023-11-23 06:51:47,042 INFO L226 Difference]: Without dead ends: 351 [2023-11-23 06:51:47,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 271 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=588, Invalid=4520, Unknown=4, NotChecked=0, Total=5112 [2023-11-23 06:51:47,045 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 446 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 3228 mSolverCounterSat, 238 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 3487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 3228 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:51:47,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 728 Invalid, 3487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 3228 Invalid, 21 Unknown, 0 Unchecked, 36.5s Time] [2023-11-23 06:51:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-23 06:51:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 297. [2023-11-23 06:51:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 206 states have (on average 1.1893203883495145) internal successors, (245), 212 states have internal predecessors, (245), 59 states have call successors, (59), 25 states have call predecessors, (59), 31 states have return successors, (78), 59 states have call predecessors, (78), 57 states have call successors, (78) [2023-11-23 06:51:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 382 transitions. [2023-11-23 06:51:47,068 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 382 transitions. Word has length 129 [2023-11-23 06:51:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:51:47,068 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 382 transitions. [2023-11-23 06:51:47,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 4.185185185185185) internal successors, (113), 28 states have internal predecessors, (113), 16 states have call successors, (34), 7 states have call predecessors, (34), 9 states have return successors, (31), 12 states have call predecessors, (31), 16 states have call successors, (31) [2023-11-23 06:51:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 382 transitions. [2023-11-23 06:51:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 06:51:47,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:51:47,070 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:51:47,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 06:51:47,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 06:51:47,284 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:51:47,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:51:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1772674431, now seen corresponding path program 4 times [2023-11-23 06:51:47,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:51:47,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134487953] [2023-11-23 06:51:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:51:47,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:51:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:51:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:51:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:51:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:51:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:51:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:51:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:51:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:51:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:51:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 06:51:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-23 06:51:47,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:51:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134487953] [2023-11-23 06:51:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134487953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:51:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818235511] [2023-11-23 06:51:47,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 06:51:47,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:51:47,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:51:47,844 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:51:47,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 06:51:48,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 06:51:48,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:51:48,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 2803 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-23 06:51:48,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:51:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 119 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 06:51:48,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:51:49,265 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:51:49,265 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 23 treesize of output 18 [2023-11-23 06:51:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 41 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 06:51:49,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818235511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:51:49,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:51:49,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 11] total 26 [2023-11-23 06:51:49,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222637444] [2023-11-23 06:51:49,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:51:49,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 06:51:49,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:51:49,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 06:51:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:51:49,308 INFO L87 Difference]: Start difference. First operand 297 states and 382 transitions. Second operand has 26 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 8 states have call successors, (38), 7 states have call predecessors, (38), 6 states have return successors, (32), 5 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-23 06:51:52,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:55,221 WARN L539 Checker$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 06:51:57,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:59,335 WARN L539 Checker$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 06:52:04,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:52:06,869 WARN L539 Checker$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 06:52:08,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:52:11,220 WARN L539 Checker$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 06:52:13,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:52:15,498 WARN L539 Checker$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 06:52:17,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:52:19,558 WARN L539 Checker$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 06:52:21,858 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 06:52:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:21,993 INFO L93 Difference]: Finished difference Result 694 states and 881 transitions. [2023-11-23 06:52:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-23 06:52:21,993 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 8 states have call successors, (38), 7 states have call predecessors, (38), 6 states have return successors, (32), 5 states have call predecessors, (32), 8 states have call successors, (32) Word has length 129 [2023-11-23 06:52:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:21,995 INFO L225 Difference]: With dead ends: 694 [2023-11-23 06:52:21,995 INFO L226 Difference]: Without dead ends: 429 [2023-11-23 06:52:21,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 277 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=444, Invalid=2636, Unknown=0, NotChecked=0, Total=3080 [2023-11-23 06:52:21,997 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 511 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 233 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:21,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 376 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2519 Invalid, 21 Unknown, 0 Unchecked, 30.0s Time] [2023-11-23 06:52:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-23 06:52:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 357. [2023-11-23 06:52:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 252 states have (on average 1.1666666666666667) internal successors, (294), 258 states have internal predecessors, (294), 66 states have call successors, (66), 30 states have call predecessors, (66), 38 states have return successors, (85), 68 states have call predecessors, (85), 64 states have call successors, (85) [2023-11-23 06:52:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 445 transitions. [2023-11-23 06:52:22,023 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 445 transitions. Word has length 129 [2023-11-23 06:52:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:22,023 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 445 transitions. [2023-11-23 06:52:22,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 6.086956521739131) internal successors, (140), 22 states have internal predecessors, (140), 8 states have call successors, (38), 7 states have call predecessors, (38), 6 states have return successors, (32), 5 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-23 06:52:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 445 transitions. [2023-11-23 06:52:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 06:52:22,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:22,025 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:22,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 06:52:22,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 06:52:22,242 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:22,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash -484609347, now seen corresponding path program 1 times [2023-11-23 06:52:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723186383] [2023-11-23 06:52:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:52:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:52:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:52:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 06:52:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-23 06:52:22,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:22,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723186383] [2023-11-23 06:52:22,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723186383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:52:22,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104462779] [2023-11-23 06:52:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:22,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:52:22,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:52:22,549 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:52:22,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 06:52:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:22,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:52:22,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:52:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 06:52:22,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:52:22,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104462779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:22,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:52:22,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 06:52:22,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390248027] [2023-11-23 06:52:22,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:22,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:52:22,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:52:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:52:22,995 INFO L87 Difference]: Start difference. First operand 357 states and 445 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:52:23,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:23,425 INFO L93 Difference]: Finished difference Result 573 states and 697 transitions. [2023-11-23 06:52:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:52:23,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2023-11-23 06:52:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:23,427 INFO L225 Difference]: With dead ends: 573 [2023-11-23 06:52:23,427 INFO L226 Difference]: Without dead ends: 250 [2023-11-23 06:52:23,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:52:23,428 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:23,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 345 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:52:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-23 06:52:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 240. [2023-11-23 06:52:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 179 states have (on average 1.1452513966480447) internal successors, (205), 182 states have internal predecessors, (205), 36 states have call successors, (36), 20 states have call predecessors, (36), 24 states have return successors, (42), 37 states have call predecessors, (42), 34 states have call successors, (42) [2023-11-23 06:52:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 283 transitions. [2023-11-23 06:52:23,444 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 283 transitions. Word has length 129 [2023-11-23 06:52:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:23,445 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 283 transitions. [2023-11-23 06:52:23,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:52:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 283 transitions. [2023-11-23 06:52:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 06:52:23,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:23,446 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:23,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 06:52:23,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:52:23,661 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:23,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1793500812, now seen corresponding path program 1 times [2023-11-23 06:52:23,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:23,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727830203] [2023-11-23 06:52:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:23,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:52:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:52:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:52:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:52:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-23 06:52:24,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:24,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727830203] [2023-11-23 06:52:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727830203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:24,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:24,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 06:52:24,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326368296] [2023-11-23 06:52:24,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:24,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:52:24,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:52:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:52:24,340 INFO L87 Difference]: Start difference. First operand 240 states and 283 transitions. Second operand has 12 states, 10 states have (on average 4.8) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:52:27,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:27,192 INFO L93 Difference]: Finished difference Result 285 states and 333 transitions. [2023-11-23 06:52:27,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:52:27,193 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.8) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 133 [2023-11-23 06:52:27,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:27,194 INFO L225 Difference]: With dead ends: 285 [2023-11-23 06:52:27,194 INFO L226 Difference]: Without dead ends: 283 [2023-11-23 06:52:27,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-11-23 06:52:27,195 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 161 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:27,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 355 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 06:52:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-23 06:52:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 260. [2023-11-23 06:52:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 193 states have (on average 1.1347150259067358) internal successors, (219), 198 states have internal predecessors, (219), 38 states have call successors, (38), 22 states have call predecessors, (38), 28 states have return successors, (49), 39 states have call predecessors, (49), 36 states have call successors, (49) [2023-11-23 06:52:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 306 transitions. [2023-11-23 06:52:27,214 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 306 transitions. Word has length 133 [2023-11-23 06:52:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:27,214 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 306 transitions. [2023-11-23 06:52:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.8) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:52:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 306 transitions. [2023-11-23 06:52:27,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 06:52:27,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:27,216 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:27,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 06:52:27,216 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:27,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2108439474, now seen corresponding path program 1 times [2023-11-23 06:52:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:27,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179865756] [2023-11-23 06:52:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:52:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:52:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:52:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:52:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-23 06:52:27,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:27,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179865756] [2023-11-23 06:52:27,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179865756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:27,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:27,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:52:27,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23946698] [2023-11-23 06:52:27,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:27,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:52:27,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:27,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:52:27,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:52:27,603 INFO L87 Difference]: Start difference. First operand 260 states and 306 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:52:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:28,338 INFO L93 Difference]: Finished difference Result 348 states and 411 transitions. [2023-11-23 06:52:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:52:28,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2023-11-23 06:52:28,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:28,339 INFO L225 Difference]: With dead ends: 348 [2023-11-23 06:52:28,339 INFO L226 Difference]: Without dead ends: 207 [2023-11-23 06:52:28,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:52:28,340 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 102 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:28,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 114 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:52:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-23 06:52:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 192. [2023-11-23 06:52:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.1267605633802817) internal successors, (160), 145 states have internal predecessors, (160), 29 states have call successors, (29), 18 states have call predecessors, (29), 20 states have return successors, (35), 28 states have call predecessors, (35), 28 states have call successors, (35) [2023-11-23 06:52:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 224 transitions. [2023-11-23 06:52:28,354 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 224 transitions. Word has length 133 [2023-11-23 06:52:28,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:28,354 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 224 transitions. [2023-11-23 06:52:28,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:52:28,355 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 224 transitions. [2023-11-23 06:52:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 06:52:28,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:28,355 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:28,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 06:52:28,356 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:28,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash -574203823, now seen corresponding path program 1 times [2023-11-23 06:52:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:28,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756175793] [2023-11-23 06:52:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:28,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:52:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:52:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:52:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 06:52:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 06:52:29,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756175793] [2023-11-23 06:52:29,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756175793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:52:29,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239193989] [2023-11-23 06:52:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:29,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:52:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:29,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:52:29,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:52:29,125 INFO L87 Difference]: Start difference. First operand 192 states and 224 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:52:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:30,674 INFO L93 Difference]: Finished difference Result 297 states and 350 transitions. [2023-11-23 06:52:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:52:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2023-11-23 06:52:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:30,675 INFO L225 Difference]: With dead ends: 297 [2023-11-23 06:52:30,675 INFO L226 Difference]: Without dead ends: 199 [2023-11-23 06:52:30,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:52:30,685 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 146 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:30,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 191 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:52:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-23 06:52:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 183. [2023-11-23 06:52:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 136 states have (on average 1.125) internal successors, (153), 138 states have internal predecessors, (153), 28 states have call successors, (28), 17 states have call predecessors, (28), 18 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2023-11-23 06:52:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 212 transitions. [2023-11-23 06:52:30,704 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 212 transitions. Word has length 134 [2023-11-23 06:52:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:30,705 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 212 transitions. [2023-11-23 06:52:30,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:52:30,705 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 212 transitions. [2023-11-23 06:52:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-23 06:52:30,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:30,707 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:30,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 06:52:30,707 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:30,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash 878348013, now seen corresponding path program 1 times [2023-11-23 06:52:30,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:30,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517470920] [2023-11-23 06:52:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:30,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:52:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:52:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:52:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:52:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:52:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 06:52:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-23 06:52:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-23 06:52:31,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517470920] [2023-11-23 06:52:31,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517470920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:52:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001164958] [2023-11-23 06:52:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:31,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:52:31,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:52:31,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:52:31,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 06:52:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:31,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 06:52:31,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:52:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 06:52:31,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:52:31,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001164958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:31,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:52:31,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-23 06:52:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245607524] [2023-11-23 06:52:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:31,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:52:31,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:52:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:52:31,907 INFO L87 Difference]: Start difference. First operand 183 states and 212 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 06:52:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:32,700 INFO L93 Difference]: Finished difference Result 254 states and 296 transitions. [2023-11-23 06:52:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:52:32,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 167 [2023-11-23 06:52:32,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:32,701 INFO L225 Difference]: With dead ends: 254 [2023-11-23 06:52:32,701 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 06:52:32,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:52:32,702 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 48 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:32,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 561 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:52:32,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 06:52:32,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-11-23 06:52:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 136 states have (on average 1.1176470588235294) internal successors, (152), 138 states have internal predecessors, (152), 28 states have call successors, (28), 17 states have call predecessors, (28), 18 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2023-11-23 06:52:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 211 transitions. [2023-11-23 06:52:32,717 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 211 transitions. Word has length 167 [2023-11-23 06:52:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:32,717 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 211 transitions. [2023-11-23 06:52:32,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 5 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 06:52:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 211 transitions. [2023-11-23 06:52:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-23 06:52:32,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:32,718 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:32,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 06:52:32,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:52:32,935 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:32,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash 780582978, now seen corresponding path program 1 times [2023-11-23 06:52:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618119355] [2023-11-23 06:52:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:52:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:52:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:52:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:52:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:52:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 06:52:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 06:52:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 06:52:33,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:33,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618119355] [2023-11-23 06:52:33,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618119355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:33,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:33,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:52:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044286590] [2023-11-23 06:52:33,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:33,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:52:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:52:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:52:33,810 INFO L87 Difference]: Start difference. First operand 183 states and 211 transitions. Second operand has 10 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 06:52:35,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:35,649 INFO L93 Difference]: Finished difference Result 199 states and 227 transitions. [2023-11-23 06:52:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:52:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 173 [2023-11-23 06:52:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:35,652 INFO L225 Difference]: With dead ends: 199 [2023-11-23 06:52:35,652 INFO L226 Difference]: Without dead ends: 197 [2023-11-23 06:52:35,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:52:35,652 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 123 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:35,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 282 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 06:52:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-23 06:52:35,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2023-11-23 06:52:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.1134751773049645) internal successors, (157), 144 states have internal predecessors, (157), 29 states have call successors, (29), 18 states have call predecessors, (29), 20 states have return successors, (33), 28 states have call predecessors, (33), 28 states have call successors, (33) [2023-11-23 06:52:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 219 transitions. [2023-11-23 06:52:35,679 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 219 transitions. Word has length 173 [2023-11-23 06:52:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:35,680 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 219 transitions. [2023-11-23 06:52:35,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 06:52:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 219 transitions. [2023-11-23 06:52:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-23 06:52:35,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:35,696 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:35,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 06:52:35,697 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:35,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash -866153866, now seen corresponding path program 1 times [2023-11-23 06:52:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:35,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979619904] [2023-11-23 06:52:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:52:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:52:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:52:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:52:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:52:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 06:52:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 06:52:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-23 06:52:36,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:36,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979619904] [2023-11-23 06:52:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979619904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:36,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:36,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:52:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766139796] [2023-11-23 06:52:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:36,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:52:36,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:52:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:52:36,969 INFO L87 Difference]: Start difference. First operand 191 states and 219 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 06:52:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:38,949 INFO L93 Difference]: Finished difference Result 212 states and 244 transitions. [2023-11-23 06:52:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:52:38,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 177 [2023-11-23 06:52:38,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:38,951 INFO L225 Difference]: With dead ends: 212 [2023-11-23 06:52:38,951 INFO L226 Difference]: Without dead ends: 197 [2023-11-23 06:52:38,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:52:38,955 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 142 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:38,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 196 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 06:52:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-23 06:52:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2023-11-23 06:52:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.1134751773049645) internal successors, (157), 144 states have internal predecessors, (157), 29 states have call successors, (29), 18 states have call predecessors, (29), 20 states have return successors, (33), 28 states have call predecessors, (33), 28 states have call successors, (33) [2023-11-23 06:52:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 219 transitions. [2023-11-23 06:52:38,970 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 219 transitions. Word has length 177 [2023-11-23 06:52:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:38,970 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 219 transitions. [2023-11-23 06:52:38,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 06:52:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 219 transitions. [2023-11-23 06:52:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-23 06:52:38,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:38,972 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:38,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 06:52:38,972 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:38,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1867096316, now seen corresponding path program 1 times [2023-11-23 06:52:38,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:38,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733890823] [2023-11-23 06:52:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:38,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:52:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:52:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:52:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:52:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:52:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 06:52:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 06:52:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-11-23 06:52:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733890823] [2023-11-23 06:52:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733890823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:41,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 06:52:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084550475] [2023-11-23 06:52:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:41,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 06:52:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 06:52:41,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:52:41,552 INFO L87 Difference]: Start difference. First operand 191 states and 219 transitions. Second operand has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 12 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 11 states have call predecessors, (19), 12 states have call successors, (19) [2023-11-23 06:52:43,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:43,487 INFO L93 Difference]: Finished difference Result 292 states and 348 transitions. [2023-11-23 06:52:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 06:52:43,487 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 12 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 11 states have call predecessors, (19), 12 states have call successors, (19) Word has length 177 [2023-11-23 06:52:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:43,489 INFO L225 Difference]: With dead ends: 292 [2023-11-23 06:52:43,489 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 06:52:43,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:52:43,489 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 220 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:43,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 192 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 06:52:43,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 06:52:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 207. [2023-11-23 06:52:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 149 states have (on average 1.1073825503355705) internal successors, (165), 152 states have internal predecessors, (165), 37 states have call successors, (37), 18 states have call predecessors, (37), 20 states have return successors, (43), 36 states have call predecessors, (43), 36 states have call successors, (43) [2023-11-23 06:52:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 245 transitions. [2023-11-23 06:52:43,506 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 245 transitions. Word has length 177 [2023-11-23 06:52:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:43,506 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 245 transitions. [2023-11-23 06:52:43,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 12 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 11 states have call predecessors, (19), 12 states have call successors, (19) [2023-11-23 06:52:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 245 transitions. [2023-11-23 06:52:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 06:52:43,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:43,507 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:43,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 06:52:43,507 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:43,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash 247730870, now seen corresponding path program 1 times [2023-11-23 06:52:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:43,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385187856] [2023-11-23 06:52:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:52:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:52:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:52:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:52:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:52:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:52:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:52:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:52:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:52:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:52:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 06:52:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 06:52:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 06:52:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-11-23 06:52:45,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:45,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385187856] [2023-11-23 06:52:45,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385187856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:45,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:45,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 06:52:45,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013338232] [2023-11-23 06:52:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:45,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 06:52:45,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 06:52:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:52:45,339 INFO L87 Difference]: Start difference. First operand 207 states and 245 transitions. Second operand has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 11 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) [2023-11-23 06:52:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:47,699 INFO L93 Difference]: Finished difference Result 273 states and 319 transitions. [2023-11-23 06:52:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 06:52:47,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 11 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) Word has length 181 [2023-11-23 06:52:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:47,701 INFO L225 Difference]: With dead ends: 273 [2023-11-23 06:52:47,701 INFO L226 Difference]: Without dead ends: 210 [2023-11-23 06:52:47,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:52:47,702 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 173 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:47,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 211 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 06:52:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-23 06:52:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2023-11-23 06:52:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 150 states have (on average 1.1066666666666667) internal successors, (166), 153 states have internal predecessors, (166), 37 states have call successors, (37), 18 states have call predecessors, (37), 20 states have return successors, (43), 36 states have call predecessors, (43), 36 states have call successors, (43) [2023-11-23 06:52:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 246 transitions. [2023-11-23 06:52:47,722 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 246 transitions. Word has length 181 [2023-11-23 06:52:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:47,722 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 246 transitions. [2023-11-23 06:52:47,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 11 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) [2023-11-23 06:52:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 246 transitions. [2023-11-23 06:52:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-23 06:52:47,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:47,724 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:47,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 06:52:47,724 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:47,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2085951034, now seen corresponding path program 1 times [2023-11-23 06:52:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:47,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256011701] [2023-11-23 06:52:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:47,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:52:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:52:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:52:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:52:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:52:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 06:52:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 06:52:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 38 proven. 9 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 06:52:49,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256011701] [2023-11-23 06:52:49,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256011701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:52:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858694922] [2023-11-23 06:52:49,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:49,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:52:49,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:52:49,883 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:52:49,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 06:52:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:50,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 06:52:50,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:52:50,463 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 36 treesize of output 19 [2023-11-23 06:52:50,471 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 42 treesize of output 9 [2023-11-23 06:52:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-23 06:52:50,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:52:50,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858694922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:50,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:52:50,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2023-11-23 06:52:50,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915444200] [2023-11-23 06:52:50,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:50,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:52:50,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:50,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:52:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:52:50,945 INFO L87 Difference]: Start difference. First operand 208 states and 246 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 06:52:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:52,969 INFO L93 Difference]: Finished difference Result 252 states and 292 transitions. [2023-11-23 06:52:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:52:52,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 177 [2023-11-23 06:52:52,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:52,970 INFO L225 Difference]: With dead ends: 252 [2023-11-23 06:52:52,970 INFO L226 Difference]: Without dead ends: 226 [2023-11-23 06:52:52,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2023-11-23 06:52:52,971 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 55 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:52,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 657 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 06:52:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-23 06:52:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 213. [2023-11-23 06:52:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 156 states have (on average 1.1025641025641026) internal successors, (172), 158 states have internal predecessors, (172), 37 states have call successors, (37), 18 states have call predecessors, (37), 19 states have return successors, (39), 36 states have call predecessors, (39), 36 states have call successors, (39) [2023-11-23 06:52:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 248 transitions. [2023-11-23 06:52:52,991 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 248 transitions. Word has length 177 [2023-11-23 06:52:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:52,992 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 248 transitions. [2023-11-23 06:52:52,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 06:52:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 248 transitions. [2023-11-23 06:52:52,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 06:52:52,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:52,993 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:53,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 06:52:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-23 06:52:53,209 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:53,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash -544531662, now seen corresponding path program 1 times [2023-11-23 06:52:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793928235] [2023-11-23 06:52:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:52:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:52:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:52:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:52:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:52:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:52:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:52:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:52:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:54,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:52:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:52:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 06:52:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 06:52:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 06:52:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-23 06:52:54,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:54,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793928235] [2023-11-23 06:52:54,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793928235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:54,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:52:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496245716] [2023-11-23 06:52:54,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:54,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:52:54,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:52:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:52:54,157 INFO L87 Difference]: Start difference. First operand 213 states and 248 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 06:52:55,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:55,982 INFO L93 Difference]: Finished difference Result 244 states and 283 transitions. [2023-11-23 06:52:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:52:55,983 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2023-11-23 06:52:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:55,984 INFO L225 Difference]: With dead ends: 244 [2023-11-23 06:52:55,984 INFO L226 Difference]: Without dead ends: 220 [2023-11-23 06:52:55,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:52:55,985 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 140 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:55,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 220 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 06:52:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-23 06:52:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2023-11-23 06:52:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 151 states have (on average 1.099337748344371) internal successors, (166), 153 states have internal predecessors, (166), 37 states have call successors, (37), 18 states have call predecessors, (37), 19 states have return successors, (39), 36 states have call predecessors, (39), 36 states have call successors, (39) [2023-11-23 06:52:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 242 transitions. [2023-11-23 06:52:56,007 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 242 transitions. Word has length 181 [2023-11-23 06:52:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:56,008 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 242 transitions. [2023-11-23 06:52:56,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 06:52:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 242 transitions. [2023-11-23 06:52:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 06:52:56,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:56,009 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:56,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 06:52:56,010 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:56,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:56,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1542363769, now seen corresponding path program 1 times [2023-11-23 06:52:56,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:56,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880511428] [2023-11-23 06:52:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:56,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:52:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:52:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:52:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:52:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:52:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:52:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:52:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:52:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:52:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:52:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 06:52:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 06:52:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-23 06:52:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-23 06:52:57,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:57,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880511428] [2023-11-23 06:52:57,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880511428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:57,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:57,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:52:57,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297726513] [2023-11-23 06:52:57,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:57,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:52:57,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:57,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:52:57,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:52:57,455 INFO L87 Difference]: Start difference. First operand 208 states and 242 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 06:52:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:59,284 INFO L93 Difference]: Finished difference Result 216 states and 249 transitions. [2023-11-23 06:52:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:52:59,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 179 [2023-11-23 06:52:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:59,286 INFO L225 Difference]: With dead ends: 216 [2023-11-23 06:52:59,287 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 06:52:59,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:52:59,287 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 129 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:59,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 160 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 06:52:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 06:52:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2023-11-23 06:52:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 154 states have (on average 1.0974025974025974) internal successors, (169), 156 states have internal predecessors, (169), 37 states have call successors, (37), 19 states have call predecessors, (37), 20 states have return successors, (39), 36 states have call predecessors, (39), 36 states have call successors, (39) [2023-11-23 06:52:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 245 transitions. [2023-11-23 06:52:59,317 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 245 transitions. Word has length 179 [2023-11-23 06:52:59,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:59,318 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 245 transitions. [2023-11-23 06:52:59,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 06:52:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 245 transitions. [2023-11-23 06:52:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-23 06:52:59,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:59,319 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:52:59,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-23 06:52:59,319 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:59,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:59,320 INFO L85 PathProgramCache]: Analyzing trace with hash 444525705, now seen corresponding path program 1 times [2023-11-23 06:52:59,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:59,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346183966] [2023-11-23 06:52:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:59,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:52:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:52:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:52:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:52:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:52:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:52:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:52:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:53:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:53:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:53:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:53:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 06:53:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 06:53:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 06:53:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-23 06:53:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:53:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346183966] [2023-11-23 06:53:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346183966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:53:00,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:53:00,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 06:53:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885797631] [2023-11-23 06:53:00,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:53:00,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:53:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:53:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:53:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:53:00,115 INFO L87 Difference]: Start difference. First operand 212 states and 245 transitions. Second operand has 12 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 06:53:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:53:02,265 INFO L93 Difference]: Finished difference Result 240 states and 277 transitions. [2023-11-23 06:53:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:53:02,265 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 183 [2023-11-23 06:53:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:53:02,266 INFO L225 Difference]: With dead ends: 240 [2023-11-23 06:53:02,266 INFO L226 Difference]: Without dead ends: 238 [2023-11-23 06:53:02,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:53:02,267 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 141 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:53:02,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 352 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 06:53:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-23 06:53:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 214. [2023-11-23 06:53:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 156 states have (on average 1.0961538461538463) internal successors, (171), 158 states have internal predecessors, (171), 37 states have call successors, (37), 19 states have call predecessors, (37), 20 states have return successors, (39), 36 states have call predecessors, (39), 36 states have call successors, (39) [2023-11-23 06:53:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 247 transitions. [2023-11-23 06:53:02,285 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 247 transitions. Word has length 183 [2023-11-23 06:53:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:53:02,285 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 247 transitions. [2023-11-23 06:53:02,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 06:53:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 247 transitions. [2023-11-23 06:53:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-23 06:53:02,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:53:02,286 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:53:02,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-23 06:53:02,287 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:53:02,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:53:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash 51498695, now seen corresponding path program 1 times [2023-11-23 06:53:02,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:53:02,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082518039] [2023-11-23 06:53:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:53:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:53:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:53:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:53:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:53:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:53:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:53:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:53:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:53:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:53:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:53:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:53:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:53:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:53:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 06:53:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 06:53:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 06:53:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-23 06:53:03,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:53:03,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082518039] [2023-11-23 06:53:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082518039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:53:03,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:53:03,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:53:03,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603290375] [2023-11-23 06:53:03,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:53:03,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:53:03,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:53:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:53:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:53:03,224 INFO L87 Difference]: Start difference. First operand 214 states and 247 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 06:53:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:53:04,944 INFO L93 Difference]: Finished difference Result 250 states and 288 transitions. [2023-11-23 06:53:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:53:04,945 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 183 [2023-11-23 06:53:04,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:53:04,946 INFO L225 Difference]: With dead ends: 250 [2023-11-23 06:53:04,946 INFO L226 Difference]: Without dead ends: 226 [2023-11-23 06:53:04,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:53:04,947 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 131 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:53:04,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 220 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 06:53:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-23 06:53:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 208. [2023-11-23 06:53:04,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 152 states have (on average 1.0921052631578947) internal successors, (166), 153 states have internal predecessors, (166), 36 states have call successors, (36), 19 states have call predecessors, (36), 19 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2023-11-23 06:53:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 239 transitions. [2023-11-23 06:53:04,964 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 239 transitions. Word has length 183 [2023-11-23 06:53:04,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:53:04,965 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 239 transitions. [2023-11-23 06:53:04,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 06:53:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 239 transitions. [2023-11-23 06:53:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-23 06:53:04,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:53:04,966 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:53:04,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-23 06:53:04,966 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:53:04,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:53:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2028487658, now seen corresponding path program 1 times [2023-11-23 06:53:04,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:53:04,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568472606] [2023-11-23 06:53:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:53:04,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:53:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:53:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:53:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:53:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:53:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:53:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:53:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:53:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:53:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:53:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:53:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:53:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:53:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 06:53:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 06:53:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 06:53:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-23 06:53:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-23 06:53:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-11-23 06:53:06,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:53:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568472606] [2023-11-23 06:53:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568472606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:53:06,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:53:06,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-23 06:53:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556877477] [2023-11-23 06:53:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:53:06,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 06:53:06,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:53:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 06:53:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-23 06:53:06,928 INFO L87 Difference]: Start difference. First operand 208 states and 239 transitions. Second operand has 18 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 12 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-23 06:53:09,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:53:09,625 INFO L93 Difference]: Finished difference Result 270 states and 305 transitions. [2023-11-23 06:53:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 06:53:09,626 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 12 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) Word has length 189 [2023-11-23 06:53:09,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:53:09,632 INFO L225 Difference]: With dead ends: 270 [2023-11-23 06:53:09,632 INFO L226 Difference]: Without dead ends: 210 [2023-11-23 06:53:09,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2023-11-23 06:53:09,633 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 174 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:53:09,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 216 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 06:53:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-23 06:53:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2023-11-23 06:53:09,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 151 states have (on average 1.0794701986754967) internal successors, (163), 152 states have internal predecessors, (163), 36 states have call successors, (36), 19 states have call predecessors, (36), 19 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2023-11-23 06:53:09,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2023-11-23 06:53:09,655 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 189 [2023-11-23 06:53:09,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:53:09,655 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2023-11-23 06:53:09,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 12 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-23 06:53:09,656 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2023-11-23 06:53:09,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-23 06:53:09,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:53:09,657 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:53:09,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-23 06:53:09,657 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:53:09,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:53:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash 317039708, now seen corresponding path program 1 times [2023-11-23 06:53:09,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:53:09,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402357116] [2023-11-23 06:53:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:53:09,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:53:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:53:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:53:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:53:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:53:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:53:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:53:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:53:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:53:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:53:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:53:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:53:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:53:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 06:53:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:10,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 06:53:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-23 06:53:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 06:53:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-23 06:53:11,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:53:11,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402357116] [2023-11-23 06:53:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402357116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:53:11,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:53:11,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 06:53:11,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524261790] [2023-11-23 06:53:11,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:53:11,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:53:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:53:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:53:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:53:11,039 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 06:53:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:53:13,604 INFO L93 Difference]: Finished difference Result 230 states and 263 transitions. [2023-11-23 06:53:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 06:53:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 185 [2023-11-23 06:53:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:53:13,605 INFO L225 Difference]: With dead ends: 230 [2023-11-23 06:53:13,605 INFO L226 Difference]: Without dead ends: 228 [2023-11-23 06:53:13,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-11-23 06:53:13,606 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 158 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:53:13,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 237 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 06:53:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-23 06:53:13,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 219. [2023-11-23 06:53:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 158 states have (on average 1.0759493670886076) internal successors, (170), 160 states have internal predecessors, (170), 39 states have call successors, (39), 20 states have call predecessors, (39), 21 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-23 06:53:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 250 transitions. [2023-11-23 06:53:13,626 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 250 transitions. Word has length 185 [2023-11-23 06:53:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:53:13,626 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 250 transitions. [2023-11-23 06:53:13,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 06:53:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 250 transitions. [2023-11-23 06:53:13,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-23 06:53:13,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:53:13,628 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:53:13,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-23 06:53:13,628 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:53:13,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:53:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2019508477, now seen corresponding path program 1 times [2023-11-23 06:53:13,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:53:13,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113919157] [2023-11-23 06:53:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:53:13,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:53:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:53:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:53:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:53:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:53:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:53:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:53:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:53:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:53:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:53:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:53:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:53:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:53:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 06:53:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 06:53:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-23 06:53:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 06:53:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-23 06:53:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-11-23 06:53:14,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:53:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113919157] [2023-11-23 06:53:14,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113919157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:53:14,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:53:14,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:53:14,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949776762] [2023-11-23 06:53:14,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:53:14,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:53:14,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:53:14,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:53:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:53:14,909 INFO L87 Difference]: Start difference. First operand 219 states and 250 transitions. Second operand has 11 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 6 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Killed by 15