./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.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 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:21:09,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:21:10,018 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:21:10,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:21:10,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:21:10,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:21:10,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:21:10,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:21:10,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:21:10,056 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:21:10,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:21:10,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:21:10,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:21:10,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:21:10,058 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:21:10,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:21:10,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:21:10,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:21:10,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:21:10,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:21:10,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:21:10,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:21:10,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:21:10,061 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:21:10,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:21:10,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:21:10,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:21:10,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:21:10,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:21:10,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:21:10,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:21:10,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:21:10,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:21:10,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:21:10,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:21:10,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:21:10,064 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:21:10,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:21:10,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:21:10,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:21:10,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:21:10,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:21:10,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:21:10,341 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:21:10,341 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:21:10,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2023-11-23 08:21:11,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:21:11,851 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:21:11,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2023-11-23 08:21:11,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74f26130/2c8ff8f33c0241018fb5a01a819f552d/FLAGb66d8bdcc [2023-11-23 08:21:11,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74f26130/2c8ff8f33c0241018fb5a01a819f552d [2023-11-23 08:21:11,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:21:11,906 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:21:11,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:21:11,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:21:11,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:21:11,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:11,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7fb3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11, skipping insertion in model container [2023-11-23 08:21:11,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:11,993 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:21:12,183 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2023-11-23 08:21:12,191 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2023-11-23 08:21:12,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:12,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:12,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:12,865 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:12,865 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:12,874 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:12,877 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:12,880 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:12,881 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,128 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:21:13,129 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:21:13,130 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:21:13,132 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:21:13,137 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:21:13,137 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:21:13,138 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:21:13,139 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:21:13,141 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:21:13,142 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:21:13,385 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,386 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:21:13,507 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:21:13,524 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2023-11-23 08:21:13,525 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2023-11-23 08:21:13,552 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,552 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,552 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,553 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,553 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,561 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,584 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:21:13,585 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:21:13,585 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:21:13,586 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:21:13,588 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:21:13,589 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:21:13,589 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:21:13,589 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:21:13,590 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:21:13,594 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:21:13,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 08:21:13,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:13,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 08:21:13,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:21:13,833 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,833 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,833 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,834 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,834 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,834 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,834 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,834 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,835 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,835 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,835 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,835 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,835 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,835 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,836 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,836 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,836 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,836 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:13,842 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:21:13,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13 WrapperNode [2023-11-23 08:21:13,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:21:13,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:21:13,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:21:13,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:21:13,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:13,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,003 INFO L138 Inliner]: procedures = 690, calls = 2659, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 902 [2023-11-23 08:21:14,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:21:14,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:21:14,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:21:14,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:21:14,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:21:14,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:21:14,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:21:14,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:21:14,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (1/1) ... [2023-11-23 08:21:14,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:21:14,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:14,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:21:14,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:21:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:21:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:21:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:21:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:21:14,195 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:21:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:21:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:21:14,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:21:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:21:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:21:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 08:21:14,200 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 08:21:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:21:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 08:21:14,200 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 08:21:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:21:14,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:21:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:21:14,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:21:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:21:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:21:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 08:21:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 08:21:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:21:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:21:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:21:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 08:21:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 08:21:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:21:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-23 08:21:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-23 08:21:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:21:14,453 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:21:14,455 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:21:15,186 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:21:15,296 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:21:15,296 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:21:15,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:21:15 BoogieIcfgContainer [2023-11-23 08:21:15,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:21:15,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:21:15,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:21:15,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:21:15,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:21:11" (1/3) ... [2023-11-23 08:21:15,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea88c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:21:15, skipping insertion in model container [2023-11-23 08:21:15,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:13" (2/3) ... [2023-11-23 08:21:15,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea88c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:21:15, skipping insertion in model container [2023-11-23 08:21:15,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:21:15" (3/3) ... [2023-11-23 08:21:15,305 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2023-11-23 08:21:15,319 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:21:15,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:21:15,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:21:15,377 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;@37e94e2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:21:15,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:21:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 91 states have internal predecessors, (112), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-23 08:21:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 08:21:15,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:15,396 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:15,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:15,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:15,403 INFO L85 PathProgramCache]: Analyzing trace with hash 289396822, now seen corresponding path program 1 times [2023-11-23 08:21:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:15,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914356326] [2023-11-23 08:21:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:15,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:21:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:21:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:21:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:21:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:21:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:21:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:21:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:21:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:21:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:21:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-23 08:21:16,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:16,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914356326] [2023-11-23 08:21:16,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914356326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:16,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:21:16,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:21:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972924739] [2023-11-23 08:21:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:16,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:21:16,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:21:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:21:16,318 INFO L87 Difference]: Start difference. First operand has 159 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 91 states have internal predecessors, (112), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 08:21:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:17,188 INFO L93 Difference]: Finished difference Result 325 states and 483 transitions. [2023-11-23 08:21:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:17,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2023-11-23 08:21:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:17,199 INFO L225 Difference]: With dead ends: 325 [2023-11-23 08:21:17,199 INFO L226 Difference]: Without dead ends: 167 [2023-11-23 08:21:17,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:21:17,205 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 169 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:17,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 134 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:21:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-23 08:21:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2023-11-23 08:21:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 08:21:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 213 transitions. [2023-11-23 08:21:17,249 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 213 transitions. Word has length 141 [2023-11-23 08:21:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:17,249 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 213 transitions. [2023-11-23 08:21:17,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 08:21:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 213 transitions. [2023-11-23 08:21:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 08:21:17,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:17,252 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:17,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:21:17,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:17,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1886544022, now seen corresponding path program 1 times [2023-11-23 08:21:17,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:17,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624816773] [2023-11-23 08:21:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:17,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:21:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:21:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:21:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:21:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:21:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:21:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:21:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:21:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:21:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:21:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 08:21:18,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:18,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624816773] [2023-11-23 08:21:18,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624816773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:18,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002428024] [2023-11-23 08:21:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:18,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:18,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:18,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:18,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:21:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:18,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 08:21:18,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:18,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002428024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:18,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:18,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:21:18,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115920848] [2023-11-23 08:21:18,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:18,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:21:18,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:21:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:18,697 INFO L87 Difference]: Start difference. First operand 157 states and 213 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 08:21:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:19,025 INFO L93 Difference]: Finished difference Result 310 states and 426 transitions. [2023-11-23 08:21:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:19,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 141 [2023-11-23 08:21:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:19,027 INFO L225 Difference]: With dead ends: 310 [2023-11-23 08:21:19,027 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 08:21:19,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:19,029 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 43 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:19,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 498 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:21:19,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 08:21:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 08:21:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 92 states have internal predecessors, (109), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-11-23 08:21:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 221 transitions. [2023-11-23 08:21:19,042 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 221 transitions. Word has length 141 [2023-11-23 08:21:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:19,042 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 221 transitions. [2023-11-23 08:21:19,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 08:21:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 221 transitions. [2023-11-23 08:21:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-23 08:21:19,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:19,044 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:19,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:21:19,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:19,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:19,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:19,246 INFO L85 PathProgramCache]: Analyzing trace with hash -977098935, now seen corresponding path program 1 times [2023-11-23 08:21:19,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:19,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457162957] [2023-11-23 08:21:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:19,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:21:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:21:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:21:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:21:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:21:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:21:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:21:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 08:21:19,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457162957] [2023-11-23 08:21:19,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457162957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030480098] [2023-11-23 08:21:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:19,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:19,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:19,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:19,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:21:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:20,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:21:20,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 08:21:20,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:20,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030480098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:20,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:20,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 08:21:20,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079275423] [2023-11-23 08:21:20,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:20,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:21:20,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:21:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:21:20,265 INFO L87 Difference]: Start difference. First operand 159 states and 221 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:21:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:20,733 INFO L93 Difference]: Finished difference Result 322 states and 456 transitions. [2023-11-23 08:21:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:20,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 147 [2023-11-23 08:21:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:20,735 INFO L225 Difference]: With dead ends: 322 [2023-11-23 08:21:20,735 INFO L226 Difference]: Without dead ends: 169 [2023-11-23 08:21:20,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:21:20,737 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 29 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:20,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 582 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:21:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-23 08:21:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2023-11-23 08:21:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 94 states have internal predecessors, (111), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-11-23 08:21:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2023-11-23 08:21:20,751 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 147 [2023-11-23 08:21:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:20,752 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2023-11-23 08:21:20,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:21:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2023-11-23 08:21:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-23 08:21:20,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:20,754 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:20,790 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 08:21:20,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 08:21:20,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:20,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:20,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1315982091, now seen corresponding path program 1 times [2023-11-23 08:21:20,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:20,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17702630] [2023-11-23 08:21:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:20,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:21:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:21:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:21:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:21:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:21:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:21:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:21:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 08:21:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17702630] [2023-11-23 08:21:21,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17702630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961100760] [2023-11-23 08:21:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:21,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:21,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:21,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:21,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:21:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:22,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 08:21:22,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961100760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:22,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:21:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325654542] [2023-11-23 08:21:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:22,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:21:22,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:21:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:22,184 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 08:21:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:22,510 INFO L93 Difference]: Finished difference Result 290 states and 404 transitions. [2023-11-23 08:21:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:22,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 147 [2023-11-23 08:21:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:22,512 INFO L225 Difference]: With dead ends: 290 [2023-11-23 08:21:22,512 INFO L226 Difference]: Without dead ends: 161 [2023-11-23 08:21:22,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:22,514 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 41 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:22,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 506 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:21:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-23 08:21:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-23 08:21:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 94 states have internal predecessors, (111), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2023-11-23 08:21:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 221 transitions. [2023-11-23 08:21:22,535 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 221 transitions. Word has length 147 [2023-11-23 08:21:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:22,536 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 221 transitions. [2023-11-23 08:21:22,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 08:21:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 221 transitions. [2023-11-23 08:21:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 08:21:22,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:22,537 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:22,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:21:22,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:22,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:22,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1285152320, now seen corresponding path program 2 times [2023-11-23 08:21:22,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:22,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664625407] [2023-11-23 08:21:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:22,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:21:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:21:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 08:21:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:21:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 08:21:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:21:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 08:21:23,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:23,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664625407] [2023-11-23 08:21:23,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664625407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:23,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131957232] [2023-11-23 08:21:23,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:21:23,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:23,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:23,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:23,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:21:24,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:21:24,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:21:24,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 08:21:24,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:24,389 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-23 08:21:24,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-23 08:21:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-23 08:21:24,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131957232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:24,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:24,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-11-23 08:21:24,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445566792] [2023-11-23 08:21:24,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:24,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:21:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:21:24,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:21:24,605 INFO L87 Difference]: Start difference. First operand 161 states and 221 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 08:21:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:25,436 INFO L93 Difference]: Finished difference Result 277 states and 383 transitions. [2023-11-23 08:21:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:21:25,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 153 [2023-11-23 08:21:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:25,438 INFO L225 Difference]: With dead ends: 277 [2023-11-23 08:21:25,438 INFO L226 Difference]: Without dead ends: 161 [2023-11-23 08:21:25,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:21:25,439 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 56 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:25,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1171 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:21:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-23 08:21:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-23 08:21:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 94 states have internal predecessors, (111), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (53), 52 states have call predecessors, (53), 52 states have call successors, (53) [2023-11-23 08:21:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 217 transitions. [2023-11-23 08:21:25,447 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 217 transitions. Word has length 153 [2023-11-23 08:21:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 217 transitions. [2023-11-23 08:21:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 08:21:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 217 transitions. [2023-11-23 08:21:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-23 08:21:25,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:25,449 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:25,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 08:21:25,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:25,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:25,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:25,650 INFO L85 PathProgramCache]: Analyzing trace with hash -171585205, now seen corresponding path program 3 times [2023-11-23 08:21:25,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:25,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597689537] [2023-11-23 08:21:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:25,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 08:21:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 08:21:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 08:21:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:21:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:21:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-23 08:21:26,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:26,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597689537] [2023-11-23 08:21:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597689537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:26,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482918390] [2023-11-23 08:21:26,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:21:26,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:26,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:26,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:26,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:21:26,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 08:21:26,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:21:26,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 08:21:26,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-11-23 08:21:26,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482918390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 08:21:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701361014] [2023-11-23 08:21:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:26,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:21:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:21:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:21:26,683 INFO L87 Difference]: Start difference. First operand 161 states and 217 transitions. Second operand has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 08:21:27,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:27,363 INFO L93 Difference]: Finished difference Result 172 states and 236 transitions. [2023-11-23 08:21:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:21:27,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 171 [2023-11-23 08:21:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:27,369 INFO L225 Difference]: With dead ends: 172 [2023-11-23 08:21:27,369 INFO L226 Difference]: Without dead ends: 170 [2023-11-23 08:21:27,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:21:27,371 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 23 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:27,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1341 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:21:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-23 08:21:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2023-11-23 08:21:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 100 states have internal predecessors, (116), 54 states have call successors, (54), 16 states have call predecessors, (54), 18 states have return successors, (63), 53 states have call predecessors, (63), 53 states have call successors, (63) [2023-11-23 08:21:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 233 transitions. [2023-11-23 08:21:27,396 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 233 transitions. Word has length 171 [2023-11-23 08:21:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:27,398 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 233 transitions. [2023-11-23 08:21:27,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 08:21:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 233 transitions. [2023-11-23 08:21:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-23 08:21:27,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:27,401 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:27,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:21:27,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:27,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:27,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:27,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1705563007, now seen corresponding path program 1 times [2023-11-23 08:21:27,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983885197] [2023-11-23 08:21:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:27,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 08:21:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 08:21:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 08:21:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:21:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:21:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-23 08:21:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983885197] [2023-11-23 08:21:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983885197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:28,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849317823] [2023-11-23 08:21:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:28,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:28,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:28,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:28,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:21:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:28,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 155 proven. 52 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 08:21:29,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:21:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-23 08:21:29,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849317823] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:21:29,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:21:29,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-11-23 08:21:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725877679] [2023-11-23 08:21:29,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:21:29,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:21:29,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:29,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:21:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:21:29,309 INFO L87 Difference]: Start difference. First operand 169 states and 233 transitions. Second operand has 14 states, 14 states have (on average 8.0) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2023-11-23 08:21:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:30,747 INFO L93 Difference]: Finished difference Result 300 states and 409 transitions. [2023-11-23 08:21:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:21:30,748 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) Word has length 175 [2023-11-23 08:21:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:30,749 INFO L225 Difference]: With dead ends: 300 [2023-11-23 08:21:30,749 INFO L226 Difference]: Without dead ends: 177 [2023-11-23 08:21:30,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 395 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:21:30,751 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 382 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:30,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 402 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:21:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-23 08:21:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 167. [2023-11-23 08:21:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 95 states have (on average 1.2) internal successors, (114), 98 states have internal predecessors, (114), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (62), 53 states have call predecessors, (62), 53 states have call successors, (62) [2023-11-23 08:21:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2023-11-23 08:21:30,764 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 175 [2023-11-23 08:21:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:30,765 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2023-11-23 08:21:30,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2023-11-23 08:21:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2023-11-23 08:21:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 08:21:30,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:30,767 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:30,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 08:21:30,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:30,973 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:30,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1653145034, now seen corresponding path program 1 times [2023-11-23 08:21:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:30,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303668701] [2023-11-23 08:21:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 08:21:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:21:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:21:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 08:21:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:21:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 72 proven. 7 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-23 08:21:32,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303668701] [2023-11-23 08:21:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303668701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022101793] [2023-11-23 08:21:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:32,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:32,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:32,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:32,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:21:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:33,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 3043 conjuncts, 85 conjunts are in the unsatisfiable core [2023-11-23 08:21:33,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:33,620 INFO L349 Elim1Store]: treesize reduction 126, result has 18.7 percent of original size [2023-11-23 08:21:33,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2023-11-23 08:21:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 199 proven. 28 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-23 08:21:34,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:21:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 08:21:35,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022101793] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:21:35,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:21:35,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 17] total 42 [2023-11-23 08:21:35,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54158261] [2023-11-23 08:21:35,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:21:35,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-23 08:21:35,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-23 08:21:35,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1548, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 08:21:35,636 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand has 42 states, 40 states have (on average 3.4) internal successors, (136), 37 states have internal predecessors, (136), 11 states have call successors, (56), 9 states have call predecessors, (56), 8 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2023-11-23 08:21:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:43,908 INFO L93 Difference]: Finished difference Result 569 states and 823 transitions. [2023-11-23 08:21:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-23 08:21:43,909 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 3.4) internal successors, (136), 37 states have internal predecessors, (136), 11 states have call successors, (56), 9 states have call predecessors, (56), 8 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) Word has length 181 [2023-11-23 08:21:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:43,913 INFO L225 Difference]: With dead ends: 569 [2023-11-23 08:21:43,913 INFO L226 Difference]: Without dead ends: 455 [2023-11-23 08:21:43,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 385 SyntacticMatches, 12 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=789, Invalid=4737, Unknown=24, NotChecked=0, Total=5550 [2023-11-23 08:21:43,916 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1395 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 4550 mSolverCounterSat, 850 mSolverCounterUnsat, 44 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 5444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 4550 IncrementalHoareTripleChecker+Invalid, 44 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:43,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 683 Invalid, 5444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 4550 Invalid, 44 Unknown, 0 Unchecked, 6.6s Time] [2023-11-23 08:21:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-11-23 08:21:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 363. [2023-11-23 08:21:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 222 states have (on average 1.2387387387387387) internal successors, (275), 230 states have internal predecessors, (275), 105 states have call successors, (105), 30 states have call predecessors, (105), 35 states have return successors, (142), 104 states have call predecessors, (142), 103 states have call successors, (142) [2023-11-23 08:21:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 522 transitions. [2023-11-23 08:21:43,967 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 522 transitions. Word has length 181 [2023-11-23 08:21:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:43,968 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 522 transitions. [2023-11-23 08:21:43,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 3.4) internal successors, (136), 37 states have internal predecessors, (136), 11 states have call successors, (56), 9 states have call predecessors, (56), 8 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2023-11-23 08:21:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 522 transitions. [2023-11-23 08:21:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 08:21:43,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:43,972 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:44,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:21:44,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:44,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:44,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:44,186 INFO L85 PathProgramCache]: Analyzing trace with hash -642027784, now seen corresponding path program 1 times [2023-11-23 08:21:44,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:44,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899527984] [2023-11-23 08:21:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:44,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 08:21:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:21:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:21:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 08:21:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:21:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-11-23 08:21:45,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899527984] [2023-11-23 08:21:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899527984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:45,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:21:45,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:21:45,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27396217] [2023-11-23 08:21:45,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:45,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:21:45,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:45,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:21:45,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:21:45,169 INFO L87 Difference]: Start difference. First operand 363 states and 522 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 08:21:46,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:46,478 INFO L93 Difference]: Finished difference Result 805 states and 1224 transitions. [2023-11-23 08:21:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:21:46,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-23 08:21:46,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:46,482 INFO L225 Difference]: With dead ends: 805 [2023-11-23 08:21:46,482 INFO L226 Difference]: Without dead ends: 448 [2023-11-23 08:21:46,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:21:46,487 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 347 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:46,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 249 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:21:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-23 08:21:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 379. [2023-11-23 08:21:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 238 states have (on average 1.2394957983193278) internal successors, (295), 246 states have internal predecessors, (295), 105 states have call successors, (105), 30 states have call predecessors, (105), 35 states have return successors, (142), 104 states have call predecessors, (142), 103 states have call successors, (142) [2023-11-23 08:21:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 542 transitions. [2023-11-23 08:21:46,578 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 542 transitions. Word has length 181 [2023-11-23 08:21:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:46,580 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 542 transitions. [2023-11-23 08:21:46,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 08:21:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 542 transitions. [2023-11-23 08:21:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 08:21:46,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:46,586 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:46,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 08:21:46,586 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:46,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash 59036794, now seen corresponding path program 1 times [2023-11-23 08:21:46,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:46,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320237883] [2023-11-23 08:21:46,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:46,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:21:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:21:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:21:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:21:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:21:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:21:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:21:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:21:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:21:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 08:21:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:21:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:21:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 08:21:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:21:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-23 08:21:48,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:48,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320237883] [2023-11-23 08:21:48,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320237883] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:48,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054039863] [2023-11-23 08:21:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:48,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:48,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:48,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:48,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:21:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:49,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 3043 conjuncts, 135 conjunts are in the unsatisfiable core [2023-11-23 08:21:49,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:49,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 08:21:49,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:21:51,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:21:53,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-11-23 08:21:54,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2023-11-23 08:21:54,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-23 08:21:54,211 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:21:54,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-23 08:21:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 138 proven. 163 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-23 08:21:55,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:21:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 72 proven. 36 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-23 08:21:56,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054039863] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:21:56,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:21:56,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 36, 18] total 64 [2023-11-23 08:21:56,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435315097] [2023-11-23 08:21:56,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:21:56,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-23 08:21:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-23 08:21:56,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3793, Unknown=2, NotChecked=0, Total=4032 [2023-11-23 08:21:56,718 INFO L87 Difference]: Start difference. First operand 379 states and 542 transitions. Second operand has 64 states, 53 states have (on average 3.4150943396226414) internal successors, (181), 56 states have internal predecessors, (181), 21 states have call successors, (63), 13 states have call predecessors, (63), 16 states have return successors, (55), 14 states have call predecessors, (55), 19 states have call successors, (55) [2023-11-23 08:22:01,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:05,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:07,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:09,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:13,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:20,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:22,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:24,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:26,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:28,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:32,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:40,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:44,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:46,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:48,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:50,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:52,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:54,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:56,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:58,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:00,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:03,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:05,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:08,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:11,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:14,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:16,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:18,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:20,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:22,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:25,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:27,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:30,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:32,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:34,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:37,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:39,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:41,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:43,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:45,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:47,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:49,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:51,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:23:51,992 INFO L93 Difference]: Finished difference Result 1760 states and 2564 transitions. [2023-11-23 08:23:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2023-11-23 08:23:51,993 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 53 states have (on average 3.4150943396226414) internal successors, (181), 56 states have internal predecessors, (181), 21 states have call successors, (63), 13 states have call predecessors, (63), 16 states have return successors, (55), 14 states have call predecessors, (55), 19 states have call successors, (55) Word has length 181 [2023-11-23 08:23:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:23:52,001 INFO L225 Difference]: With dead ends: 1760 [2023-11-23 08:23:52,001 INFO L226 Difference]: Without dead ends: 1393 [2023-11-23 08:23:52,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 390 SyntacticMatches, 21 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14248 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=4293, Invalid=39592, Unknown=5, NotChecked=0, Total=43890 [2023-11-23 08:23:52,014 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1765 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 16652 mSolverCounterSat, 1009 mSolverCounterUnsat, 65 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 17726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 16652 IncrementalHoareTripleChecker+Invalid, 65 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:23:52,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 1854 Invalid, 17726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1009 Valid, 16652 Invalid, 65 Unknown, 0 Unchecked, 99.9s Time] [2023-11-23 08:23:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2023-11-23 08:23:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1210. [2023-11-23 08:23:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 869 states have (on average 1.2600690448791714) internal successors, (1095), 896 states have internal predecessors, (1095), 251 states have call successors, (251), 69 states have call predecessors, (251), 89 states have return successors, (371), 248 states have call predecessors, (371), 247 states have call successors, (371) [2023-11-23 08:23:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1717 transitions. [2023-11-23 08:23:52,139 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1717 transitions. Word has length 181 [2023-11-23 08:23:52,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:23:52,140 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1717 transitions. [2023-11-23 08:23:52,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 53 states have (on average 3.4150943396226414) internal successors, (181), 56 states have internal predecessors, (181), 21 states have call successors, (63), 13 states have call predecessors, (63), 16 states have return successors, (55), 14 states have call predecessors, (55), 19 states have call successors, (55) [2023-11-23 08:23:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1717 transitions. [2023-11-23 08:23:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-23 08:23:52,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:52,145 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:23:52,184 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 08:23:52,358 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,SelfDestructingSolverStorable9 [2023-11-23 08:23:52,358 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:52,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:52,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1221621442, now seen corresponding path program 1 times [2023-11-23 08:23:52,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:52,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133786995] [2023-11-23 08:23:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:23:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:23:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:23:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:23:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:23:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:23:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:23:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:23:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:23:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:23:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:23:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:23:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:23:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:23:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:23:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:23:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:23:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 08:23:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:23:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 08:23:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-23 08:23:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-11-23 08:23:53,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133786995] [2023-11-23 08:23:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133786995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015241238] [2023-11-23 08:23:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:53,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:23:53,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:53,477 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:23:53,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:23:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:54,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 102 conjunts are in the unsatisfiable core [2023-11-23 08:23:54,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:23:54,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 08:23:54,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:23:56,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:23:58,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-11-23 08:23:58,946 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:23:58,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-23 08:24:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 110 proven. 172 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:24:00,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:24:00,790 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 08:24:00,790 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 30 treesize of output 25 [2023-11-23 08:24:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 62 proven. 27 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-23 08:24:00,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015241238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:24:00,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:24:00,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 28, 13] total 48 [2023-11-23 08:24:00,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936053502] [2023-11-23 08:24:00,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:24:00,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-23 08:24:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-23 08:24:00,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2107, Unknown=2, NotChecked=0, Total=2256 [2023-11-23 08:24:00,927 INFO L87 Difference]: Start difference. First operand 1210 states and 1717 transitions. Second operand has 48 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 15 states have call successors, (69), 10 states have call predecessors, (69), 12 states have return successors, (64), 14 states have call predecessors, (64), 14 states have call successors, (64) [2023-11-23 08:24:05,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:09,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:11,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:13,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:17,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:23,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:25,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:27,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:29,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:31,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:34,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:39,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:41,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:44,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:46,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:48,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:50,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:53,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:56,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:58,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:00,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:02,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:05,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:07,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:09,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:11,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:25:11,940 INFO L93 Difference]: Finished difference Result 2487 states and 3574 transitions. [2023-11-23 08:25:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-11-23 08:25:11,941 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 15 states have call successors, (69), 10 states have call predecessors, (69), 12 states have return successors, (64), 14 states have call predecessors, (64), 14 states have call successors, (64) Word has length 189 [2023-11-23 08:25:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:25:11,946 INFO L225 Difference]: With dead ends: 2487 [2023-11-23 08:25:11,946 INFO L226 Difference]: Without dead ends: 1304 [2023-11-23 08:25:11,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 381 SyntacticMatches, 23 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5513 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=1955, Invalid=17780, Unknown=5, NotChecked=0, Total=19740 [2023-11-23 08:25:11,954 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1214 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 10795 mSolverCounterSat, 587 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 11409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 10795 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:25:11,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1492 Invalid, 11409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 10795 Invalid, 27 Unknown, 0 Unchecked, 60.9s Time] [2023-11-23 08:25:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2023-11-23 08:25:12,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1104. [2023-11-23 08:25:12,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 776 states have (on average 1.2525773195876289) internal successors, (972), 800 states have internal predecessors, (972), 243 states have call successors, (243), 67 states have call predecessors, (243), 84 states have return successors, (349), 240 states have call predecessors, (349), 239 states have call successors, (349) [2023-11-23 08:25:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1564 transitions. [2023-11-23 08:25:12,112 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1564 transitions. Word has length 189 [2023-11-23 08:25:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:25:12,112 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1564 transitions. [2023-11-23 08:25:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 15 states have call successors, (69), 10 states have call predecessors, (69), 12 states have return successors, (64), 14 states have call predecessors, (64), 14 states have call successors, (64) [2023-11-23 08:25:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1564 transitions. [2023-11-23 08:25:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-23 08:25:12,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:25:12,117 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:25:12,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-23 08:25:12,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:25:12,332 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:25:12,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:25:12,333 INFO L85 PathProgramCache]: Analyzing trace with hash 883618931, now seen corresponding path program 1 times [2023-11-23 08:25:12,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:25:12,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318275751] [2023-11-23 08:25:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:12,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:25:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:25:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:25:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:25:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:25:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:25:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:25:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:25:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:25:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:25:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:25:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:25:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:25:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:25:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:25:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 08:25:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 08:25:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 08:25:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-23 08:25:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 08:25:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-11-23 08:25:12,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:25:12,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318275751] [2023-11-23 08:25:12,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318275751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:25:12,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118772858] [2023-11-23 08:25:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:12,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:25:12,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:25:12,665 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:25:12,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:25:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 3051 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:25:13,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:25:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-23 08:25:13,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:25:13,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118772858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:25:13,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:25:13,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 08:25:13,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433153655] [2023-11-23 08:25:13,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:25:13,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:25:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:25:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:25:13,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:25:13,242 INFO L87 Difference]: Start difference. First operand 1104 states and 1564 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:25:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:25:13,857 INFO L93 Difference]: Finished difference Result 2363 states and 3399 transitions. [2023-11-23 08:25:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:25:13,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 191 [2023-11-23 08:25:13,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:25:13,864 INFO L225 Difference]: With dead ends: 2363 [2023-11-23 08:25:13,865 INFO L226 Difference]: Without dead ends: 1275 [2023-11-23 08:25:13,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:25:13,870 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 9 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:25:13,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 584 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:25:13,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-11-23 08:25:13,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1140. [2023-11-23 08:25:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 812 states have (on average 1.2376847290640394) internal successors, (1005), 836 states have internal predecessors, (1005), 243 states have call successors, (243), 67 states have call predecessors, (243), 84 states have return successors, (349), 240 states have call predecessors, (349), 239 states have call successors, (349) [2023-11-23 08:25:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1597 transitions. [2023-11-23 08:25:13,979 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1597 transitions. Word has length 191 [2023-11-23 08:25:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:25:13,979 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1597 transitions. [2023-11-23 08:25:13,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:25:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1597 transitions. [2023-11-23 08:25:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-23 08:25:13,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:25:13,984 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:25:14,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:25:14,203 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,SelfDestructingSolverStorable11 [2023-11-23 08:25:14,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:25:14,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:25:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1867092655, now seen corresponding path program 1 times [2023-11-23 08:25:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:25:14,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887808392] [2023-11-23 08:25:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:14,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:25:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:25:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:25:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:25:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:25:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:25:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:25:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:25:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:25:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:25:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:25:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:25:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:25:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:25:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:25:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 08:25:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 08:25:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 08:25:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-23 08:25:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 08:25:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 49 proven. 38 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-23 08:25:15,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:25:15,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887808392] [2023-11-23 08:25:15,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887808392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:25:15,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840889489] [2023-11-23 08:25:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:15,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:25:15,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:25:15,809 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:25:15,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:25:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:16,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-23 08:25:16,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:25:16,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 08:25:16,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:25:19,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:25:21,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-11-23 08:25:21,306 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:25:21,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-23 08:25:21,556 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 7 treesize of output 3 [2023-11-23 08:25:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 105 proven. 177 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:25:22,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:25:22,976 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 08:25:22,976 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 08:25:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 62 proven. 27 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-23 08:25:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840889489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:25:23,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:25:23,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 30, 14] total 54 [2023-11-23 08:25:23,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023062350] [2023-11-23 08:25:23,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:25:23,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-23 08:25:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:25:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-23 08:25:23,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2669, Unknown=2, NotChecked=0, Total=2862 [2023-11-23 08:25:23,163 INFO L87 Difference]: Start difference. First operand 1140 states and 1597 transitions. Second operand has 54 states, 48 states have (on average 3.9583333333333335) internal successors, (190), 47 states have internal predecessors, (190), 17 states have call successors, (63), 11 states have call predecessors, (63), 13 states have return successors, (55), 15 states have call predecessors, (55), 17 states have call successors, (55) Killed by 15