./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_ignore_case_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_cursor_eq_ignore_case_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 37f6b0c93ef236fcd62a86dc508823d298ec7578e65cd9cab79b0e3659914d7a --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:28:03,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:28:04,039 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:28:04,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:28:04,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:28:04,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:28:04,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:28:04,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:28:04,067 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:28:04,067 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:28:04,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:28:04,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:28:04,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:28:04,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:28:04,070 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:28:04,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:28:04,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:28:04,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:28:04,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:28:04,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:28:04,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:28:04,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:28:04,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:28:04,072 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:28:04,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:28:04,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:28:04,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:28:04,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:28:04,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:28:04,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:28:04,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:28:04,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:28:04,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:28:04,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:28:04,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:28:04,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:28:04,076 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:28:04,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:28:04,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:28:04,076 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f6b0c93ef236fcd62a86dc508823d298ec7578e65cd9cab79b0e3659914d7a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:28:04,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:28:04,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:28:04,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:28:04,327 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:28:04,330 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:28:04,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i [2023-11-23 08:28:05,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:28:06,157 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:28:06,158 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i [2023-11-23 08:28:06,187 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83df86128/a0289699e6c34d359f03b988ec5e0e87/FLAG9a431ceec [2023-11-23 08:28:06,201 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83df86128/a0289699e6c34d359f03b988ec5e0e87 [2023-11-23 08:28:06,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:28:06,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:28:06,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:28:06,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:28:06,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:28:06,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:28:06" (1/1) ... [2023-11-23 08:28:06,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74479194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:06, skipping insertion in model container [2023-11-23 08:28:06,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:28:06" (1/1) ... [2023-11-23 08:28:06,343 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:28:06,603 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i[4504,4517] [2023-11-23 08:28:06,626 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i[4564,4577] [2023-11-23 08:28:07,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,344 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,345 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,346 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,346 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,568 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:28:07,569 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:28:07,570 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:28:07,570 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:28:07,572 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:28:07,572 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:28:07,573 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:28:07,573 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:28:07,574 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:28:07,574 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:28:07,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:28:07,853 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:28:07,872 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i[4504,4517] [2023-11-23 08:28:07,873 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i[4564,4577] [2023-11-23 08:28:07,912 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,912 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,913 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,913 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,913 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,917 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,919 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:07,947 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:28:07,948 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:28:07,948 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:28:07,949 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:28:07,949 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:28:07,949 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:28:07,950 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:28:07,950 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:28:07,950 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:28:07,950 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:28:08,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 08:28:08,013 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:08,013 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:28:08,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 08:28:08,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:28:08,234 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,234 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,234 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,234 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,235 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,235 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,235 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,235 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,236 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,236 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,236 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,236 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,236 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,237 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,237 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,237 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,237 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,237 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:28:08,244 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:28:08,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08 WrapperNode [2023-11-23 08:28:08,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:28:08,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:28:08,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:28:08,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:28:08,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,420 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 847 [2023-11-23 08:28:08,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:28:08,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:28:08,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:28:08,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:28:08,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:28:08,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:28:08,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:28:08,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:28:08,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (1/1) ... [2023-11-23 08:28:08,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:28:08,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:28:08,571 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 08:28:08,578 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 08:28:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 08:28:08,615 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 08:28:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2023-11-23 08:28:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2023-11-23 08:28:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:28:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:28:08,616 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:28:08,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:28:08,617 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2023-11-23 08:28:08,617 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2023-11-23 08:28:08,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:28:08,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:28:08,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:28:08,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:28:08,618 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 08:28:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 08:28:08,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:28:08,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:28:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:28:08,618 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:28:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:28:08,618 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:28:08,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:28:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:28:08,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:28:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:28:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:28:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:28:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:28:08,620 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-23 08:28:08,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-23 08:28:08,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:28:08,835 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:28:08,837 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:28:09,515 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:28:09,664 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:28:09,665 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:28:09,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:28:09 BoogieIcfgContainer [2023-11-23 08:28:09,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:28:09,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:28:09,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:28:09,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:28:09,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:28:06" (1/3) ... [2023-11-23 08:28:09,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afc7b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:28:09, skipping insertion in model container [2023-11-23 08:28:09,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:08" (2/3) ... [2023-11-23 08:28:09,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afc7b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:28:09, skipping insertion in model container [2023-11-23 08:28:09,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:28:09" (3/3) ... [2023-11-23 08:28:09,688 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_ignore_case_harness.i [2023-11-23 08:28:09,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:28:09,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:28:09,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:28:09,811 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;@7ee33895, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:28:09,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:28:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-23 08:28:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 08:28:09,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:28:09,843 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:28:09,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:28:09,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:28:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2070001577, now seen corresponding path program 1 times [2023-11-23 08:28:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:28:09,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033573929] [2023-11-23 08:28:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:09,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:28:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:28:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:28:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:28:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:28:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:28:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:28:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:28:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:28:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:28:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:28:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:28:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:28:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:28:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:28:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 08:28:10,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:28:10,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033573929] [2023-11-23 08:28:10,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033573929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:28:10,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:28:10,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:28:10,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311437850] [2023-11-23 08:28:10,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:28:10,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:28:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:28:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:28:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:28:10,593 INFO L87 Difference]: Start difference. First operand has 112 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 08:28:11,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:28:11,075 INFO L93 Difference]: Finished difference Result 224 states and 333 transitions. [2023-11-23 08:28:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:28:11,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2023-11-23 08:28:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:28:11,084 INFO L225 Difference]: With dead ends: 224 [2023-11-23 08:28:11,084 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 08:28:11,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:28:11,090 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 52 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:28:11,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 132 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:28:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 08:28:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2023-11-23 08:28:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 63 states have internal predecessors, (77), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-23 08:28:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2023-11-23 08:28:11,125 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 93 [2023-11-23 08:28:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:28:11,126 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2023-11-23 08:28:11,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 08:28:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2023-11-23 08:28:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 08:28:11,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:28:11,129 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:28:11,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:28:11,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:28:11,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:28:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1853695081, now seen corresponding path program 1 times [2023-11-23 08:28:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:28:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644591261] [2023-11-23 08:28:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:11,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:28:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:28:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:28:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:28:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:28:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:28:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:28:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:28:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:28:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:28:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:28:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:28:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:28:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:28:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:28:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:28:11,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:28:11,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644591261] [2023-11-23 08:28:11,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644591261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:28:11,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293865701] [2023-11-23 08:28:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:11,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:28:11,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:28:11,716 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 08:28:11,736 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 08:28:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:12,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:28:12,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:28:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 08:28:12,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:28:12,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293865701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:28:12,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:28:12,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 08:28:12,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138361150] [2023-11-23 08:28:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:28:12,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:28:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:28:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:28:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:28:12,246 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 08:28:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:28:12,494 INFO L93 Difference]: Finished difference Result 214 states and 295 transitions. [2023-11-23 08:28:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:28:12,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 93 [2023-11-23 08:28:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:28:12,496 INFO L225 Difference]: With dead ends: 214 [2023-11-23 08:28:12,496 INFO L226 Difference]: Without dead ends: 111 [2023-11-23 08:28:12,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:28:12,498 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 35 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:28:12,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 326 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:28:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-23 08:28:12,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-23 08:28:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 36 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-11-23 08:28:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 155 transitions. [2023-11-23 08:28:12,509 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 155 transitions. Word has length 93 [2023-11-23 08:28:12,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:28:12,509 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 155 transitions. [2023-11-23 08:28:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 08:28:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 155 transitions. [2023-11-23 08:28:12,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 08:28:12,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:28:12,511 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:28:12,529 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 08:28:12,726 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 08:28:12,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:28:12,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:28:12,727 INFO L85 PathProgramCache]: Analyzing trace with hash 779801956, now seen corresponding path program 1 times [2023-11-23 08:28:12,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:28:12,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567750917] [2023-11-23 08:28:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:12,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:28:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:28:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:28:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:28:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:28:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:28:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:28:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:28:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:28:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:28:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:28:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:28:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:28:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:28:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:28:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:28:13,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:28:13,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567750917] [2023-11-23 08:28:13,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567750917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:28:13,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722860371] [2023-11-23 08:28:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:13,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:28:13,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:28:13,331 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 08:28:13,368 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 08:28:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:13,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 2647 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:28:13,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:28:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 08:28:13,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:28:13,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722860371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:28:13,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:28:13,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 08:28:13,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110070105] [2023-11-23 08:28:13,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:28:13,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:28:13,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:28:13,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:28:13,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:28:13,876 INFO L87 Difference]: Start difference. First operand 111 states and 155 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 08:28:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:28:14,325 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2023-11-23 08:28:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:28:14,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 95 [2023-11-23 08:28:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:28:14,329 INFO L225 Difference]: With dead ends: 178 [2023-11-23 08:28:14,329 INFO L226 Difference]: Without dead ends: 111 [2023-11-23 08:28:14,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:28:14,332 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 35 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:28:14,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 550 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:28:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-23 08:28:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-23 08:28:14,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 36 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-23 08:28:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2023-11-23 08:28:14,354 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 95 [2023-11-23 08:28:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:28:14,355 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2023-11-23 08:28:14,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 08:28:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2023-11-23 08:28:14,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 08:28:14,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:28:14,361 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:28:14,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:28:14,578 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 08:28:14,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:28:14,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:28:14,579 INFO L85 PathProgramCache]: Analyzing trace with hash -189538982, now seen corresponding path program 2 times [2023-11-23 08:28:14,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:28:14,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165288076] [2023-11-23 08:28:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:14,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:28:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:28:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:28:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:28:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:28:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:28:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:28:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:28:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:28:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:28:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:28:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:28:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:28:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:28:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:28:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 08:28:15,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:28:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165288076] [2023-11-23 08:28:15,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165288076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:28:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012486036] [2023-11-23 08:28:15,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:28:15,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:28:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:28:15,196 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 08:28:15,224 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 08:28:15,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:28:15,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:28:15,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 08:28:15,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:28:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:28:15,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:28:15,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012486036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:28:15,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:28:15,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 08:28:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469257456] [2023-11-23 08:28:15,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:28:15,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:28:15,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:28:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:28:15,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:28:15,631 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 08:28:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:28:16,807 INFO L93 Difference]: Finished difference Result 122 states and 171 transitions. [2023-11-23 08:28:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:28:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 99 [2023-11-23 08:28:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:28:16,809 INFO L225 Difference]: With dead ends: 122 [2023-11-23 08:28:16,809 INFO L226 Difference]: Without dead ends: 120 [2023-11-23 08:28:16,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:28:16,810 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 17 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:28:16,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 948 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:28:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-23 08:28:16,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2023-11-23 08:28:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 71 states have internal predecessors, (83), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (48), 36 states have call predecessors, (48), 36 states have call successors, (48) [2023-11-23 08:28:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 168 transitions. [2023-11-23 08:28:16,823 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 168 transitions. Word has length 99 [2023-11-23 08:28:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:28:16,823 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 168 transitions. [2023-11-23 08:28:16,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 08:28:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 168 transitions. [2023-11-23 08:28:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 08:28:16,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:28:16,841 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:28:16,870 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 08:28:17,055 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 08:28:17,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:28:17,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:28:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 824918034, now seen corresponding path program 1 times [2023-11-23 08:28:17,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:28:17,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712248383] [2023-11-23 08:28:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:28:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:28:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:28:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:28:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:28:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:28:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:28:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:28:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:28:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:28:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:28:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:28:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:28:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:28:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:28:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 08:28:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:28:17,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712248383] [2023-11-23 08:28:17,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712248383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:28:17,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893719902] [2023-11-23 08:28:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:28:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:28:17,519 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 08:28:17,547 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 08:28:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:17,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:28:17,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:28:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 08:28:18,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:28:18,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893719902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:28:18,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:28:18,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 08:28:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755123291] [2023-11-23 08:28:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:28:18,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:28:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:28:18,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:28:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:28:18,019 INFO L87 Difference]: Start difference. First operand 119 states and 168 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 08:28:18,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:28:18,526 INFO L93 Difference]: Finished difference Result 208 states and 292 transitions. [2023-11-23 08:28:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:28:18,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 103 [2023-11-23 08:28:18,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:28:18,528 INFO L225 Difference]: With dead ends: 208 [2023-11-23 08:28:18,528 INFO L226 Difference]: Without dead ends: 117 [2023-11-23 08:28:18,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:28:18,529 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 34 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:28:18,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 564 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:28:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-23 08:28:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-23 08:28:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 67 states have (on average 1.208955223880597) internal successors, (81), 69 states have internal predecessors, (81), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (44), 36 states have call predecessors, (44), 36 states have call successors, (44) [2023-11-23 08:28:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 162 transitions. [2023-11-23 08:28:18,537 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 162 transitions. Word has length 103 [2023-11-23 08:28:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:28:18,538 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 162 transitions. [2023-11-23 08:28:18,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 08:28:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 162 transitions. [2023-11-23 08:28:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 08:28:18,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:28:18,539 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:28:18,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:28:18,754 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 08:28:18,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:28:18,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:28:18,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1059359177, now seen corresponding path program 1 times [2023-11-23 08:28:18,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:28:18,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557410425] [2023-11-23 08:28:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:18,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:28:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:28:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:28:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:28:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:28:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:28:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:28:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:28:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:28:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:28:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:28:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:28:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:28:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:28:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:28:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 08:28:20,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:28:20,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557410425] [2023-11-23 08:28:20,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557410425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:28:20,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860221878] [2023-11-23 08:28:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:20,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:28:20,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:28:20,113 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 08:28:20,129 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 08:28:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:20,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 106 conjunts are in the unsatisfiable core [2023-11-23 08:28:20,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:28:20,588 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 08:28:20,654 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 13 treesize of output 9 [2023-11-23 08:28:20,657 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 13 treesize of output 9 [2023-11-23 08:28:20,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 08:28:20,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:28:20,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 08:28:20,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:28:22,421 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 17 treesize of output 9 [2023-11-23 08:28:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 64 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 08:28:22,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:28:23,530 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 10 treesize of output 6 [2023-11-23 08:28:23,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:28:23,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2023-11-23 08:28:23,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:28:23,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2023-11-23 08:28:26,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860221878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:28:26,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:28:26,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24] total 34 [2023-11-23 08:28:26,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301104140] [2023-11-23 08:28:26,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:28:26,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 08:28:26,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:28:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 08:28:26,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1892, Unknown=7, NotChecked=0, Total=2070 [2023-11-23 08:28:26,043 INFO L87 Difference]: Start difference. First operand 117 states and 162 transitions. Second operand has 34 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 30 states have internal predecessors, (101), 14 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 10 states have call predecessors, (34), 14 states have call successors, (34) [2023-11-23 08:28:28,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:28:43,394 WARN L539 Checker$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 08:28:43,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:28:43,750 INFO L93 Difference]: Finished difference Result 506 states and 721 transitions. [2023-11-23 08:28:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-23 08:28:43,751 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 30 states have internal predecessors, (101), 14 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 10 states have call predecessors, (34), 14 states have call successors, (34) Word has length 105 [2023-11-23 08:28:43,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:28:43,757 INFO L225 Difference]: With dead ends: 506 [2023-11-23 08:28:43,757 INFO L226 Difference]: Without dead ends: 452 [2023-11-23 08:28:43,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 184 SyntacticMatches, 11 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4023 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1399, Invalid=12165, Unknown=8, NotChecked=0, Total=13572 [2023-11-23 08:28:43,764 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 750 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 583 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 4357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:28:43,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 995 Invalid, 4357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 3762 Invalid, 12 Unknown, 0 Unchecked, 13.3s Time] [2023-11-23 08:28:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-11-23 08:28:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 416. [2023-11-23 08:28:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 246 states have (on average 1.2113821138211383) internal successors, (298), 253 states have internal predecessors, (298), 129 states have call successors, (129), 37 states have call predecessors, (129), 40 states have return successors, (164), 125 states have call predecessors, (164), 125 states have call successors, (164) [2023-11-23 08:28:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 591 transitions. [2023-11-23 08:28:43,862 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 591 transitions. Word has length 105 [2023-11-23 08:28:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:28:43,862 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 591 transitions. [2023-11-23 08:28:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 30 states have internal predecessors, (101), 14 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 10 states have call predecessors, (34), 14 states have call successors, (34) [2023-11-23 08:28:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 591 transitions. [2023-11-23 08:28:43,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 08:28:43,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:28:43,867 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 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 08:28:43,887 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 08:28:44,083 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 08:28:44,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:28:44,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:28:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1916877948, now seen corresponding path program 1 times [2023-11-23 08:28:44,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:28:44,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39890733] [2023-11-23 08:28:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:44,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:28:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:28:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:28:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:28:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:28:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:28:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:28:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:28:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:28:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:28:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:28:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:28:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:28:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:28:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:47,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:28:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:28:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 08:28:47,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:28:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39890733] [2023-11-23 08:28:47,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39890733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:28:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450675424] [2023-11-23 08:28:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:47,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:28:47,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:28:47,135 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 08:28:47,136 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 08:28:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:47,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 08:28:47,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:28:47,564 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 08:28:47,644 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 13 treesize of output 9 [2023-11-23 08:28:47,648 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 13 treesize of output 9 [2023-11-23 08:28:47,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 08:28:48,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:28:48,007 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 9 treesize of output 3 [2023-11-23 08:28:48,016 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 13 treesize of output 9 [2023-11-23 08:28:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 72 proven. 8 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 08:28:48,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:28:48,678 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 30 treesize of output 24 [2023-11-23 08:28:48,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:28:48,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:28:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 08:28:48,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450675424] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:28:48,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:28:48,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 11] total 38 [2023-11-23 08:28:48,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289192542] [2023-11-23 08:28:48,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:28:48,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 08:28:48,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:28:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 08:28:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 08:28:48,704 INFO L87 Difference]: Start difference. First operand 416 states and 591 transitions. Second operand has 38 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 19 states have call successors, (51), 7 states have call predecessors, (51), 12 states have return successors, (50), 17 states have call predecessors, (50), 19 states have call successors, (50) [2023-11-23 08:28:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:28:58,297 INFO L93 Difference]: Finished difference Result 977 states and 1488 transitions. [2023-11-23 08:28:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-23 08:28:58,298 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 19 states have call successors, (51), 7 states have call predecessors, (51), 12 states have return successors, (50), 17 states have call predecessors, (50), 19 states have call successors, (50) Word has length 115 [2023-11-23 08:28:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:28:58,306 INFO L225 Difference]: With dead ends: 977 [2023-11-23 08:28:58,306 INFO L226 Difference]: Without dead ends: 837 [2023-11-23 08:28:58,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 255 SyntacticMatches, 6 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=891, Invalid=7851, Unknown=0, NotChecked=0, Total=8742 [2023-11-23 08:28:58,310 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1101 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 4512 mSolverCounterSat, 1590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 6102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1590 IncrementalHoareTripleChecker+Valid, 4512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:28:58,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 1233 Invalid, 6102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1590 Valid, 4512 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-23 08:28:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2023-11-23 08:28:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 600. [2023-11-23 08:28:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 349 states have (on average 1.2148997134670487) internal successors, (424), 358 states have internal predecessors, (424), 203 states have call successors, (203), 42 states have call predecessors, (203), 47 states have return successors, (265), 199 states have call predecessors, (265), 199 states have call successors, (265) [2023-11-23 08:28:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 892 transitions. [2023-11-23 08:28:58,431 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 892 transitions. Word has length 115 [2023-11-23 08:28:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:28:58,432 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 892 transitions. [2023-11-23 08:28:58,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 19 states have call successors, (51), 7 states have call predecessors, (51), 12 states have return successors, (50), 17 states have call predecessors, (50), 19 states have call successors, (50) [2023-11-23 08:28:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 892 transitions. [2023-11-23 08:28:58,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 08:28:58,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:28:58,434 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2023-11-23 08:28:58,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:28:58,652 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 08:28:58,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:28:58,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:28:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash -707938916, now seen corresponding path program 1 times [2023-11-23 08:28:58,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:28:58,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388983606] [2023-11-23 08:28:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:28:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:28:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:28:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:28:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:28:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:28:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:28:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:28:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:28:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:28:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:28:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:28:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:28:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:28:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:28:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:28:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:28:59,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:28:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388983606] [2023-11-23 08:28:59,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388983606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:28:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278350543] [2023-11-23 08:28:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:28:59,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:28:59,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:28:59,392 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 08:28:59,460 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 08:28:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:28:59,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:28:59,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:28:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 08:28:59,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:28:59,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278350543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:28:59,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:28:59,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2023-11-23 08:28:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763559300] [2023-11-23 08:28:59,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:28:59,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:28:59,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:28:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:28:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:28:59,878 INFO L87 Difference]: Start difference. First operand 600 states and 892 transitions. Second operand has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 08:29:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:29:01,678 INFO L93 Difference]: Finished difference Result 1026 states and 1530 transitions. [2023-11-23 08:29:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:29:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 111 [2023-11-23 08:29:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:29:01,682 INFO L225 Difference]: With dead ends: 1026 [2023-11-23 08:29:01,682 INFO L226 Difference]: Without dead ends: 632 [2023-11-23 08:29:01,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:29:01,684 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 13 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:29:01,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1011 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 08:29:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-11-23 08:29:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 620. [2023-11-23 08:29:01,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 364 states have (on average 1.206043956043956) internal successors, (439), 378 states have internal predecessors, (439), 203 states have call successors, (203), 42 states have call predecessors, (203), 52 states have return successors, (298), 199 states have call predecessors, (298), 199 states have call successors, (298) [2023-11-23 08:29:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 940 transitions. [2023-11-23 08:29:01,755 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 940 transitions. Word has length 111 [2023-11-23 08:29:01,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:29:01,756 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 940 transitions. [2023-11-23 08:29:01,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 08:29:01,756 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 940 transitions. [2023-11-23 08:29:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 08:29:01,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:29:01,759 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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 08:29:01,774 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 08:29:01,972 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 08:29:01,973 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:29:01,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:29:01,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1708546249, now seen corresponding path program 1 times [2023-11-23 08:29:01,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:29:01,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471801786] [2023-11-23 08:29:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:29:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:29:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:29:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:29:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:29:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:29:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:29:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:29:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:29:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:29:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:29:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:29:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:29:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:29:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:29:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:29:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:29:03,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471801786] [2023-11-23 08:29:03,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471801786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:29:03,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669285644] [2023-11-23 08:29:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:03,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:29:03,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:29:03,421 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 08:29:03,447 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 08:29:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:03,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-23 08:29:03,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:29:03,850 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 08:29:03,908 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 13 treesize of output 9 [2023-11-23 08:29:03,912 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 13 treesize of output 9 [2023-11-23 08:29:04,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:29:04,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:29:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-23 08:29:04,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:29:04,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669285644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:29:04,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:29:04,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [15] total 27 [2023-11-23 08:29:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655113139] [2023-11-23 08:29:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:29:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:29:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:29:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:29:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:29:04,681 INFO L87 Difference]: Start difference. First operand 620 states and 940 transitions. Second operand has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 15 states have internal predecessors, (62), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-23 08:29:09,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:29:09,749 INFO L93 Difference]: Finished difference Result 1211 states and 1799 transitions. [2023-11-23 08:29:09,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 08:29:09,750 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 15 states have internal predecessors, (62), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) Word has length 113 [2023-11-23 08:29:09,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:29:09,754 INFO L225 Difference]: With dead ends: 1211 [2023-11-23 08:29:09,754 INFO L226 Difference]: Without dead ends: 679 [2023-11-23 08:29:09,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 130 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=1456, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 08:29:09,757 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 288 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:29:09,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 431 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-23 08:29:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-11-23 08:29:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 648. [2023-11-23 08:29:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 389 states have (on average 1.2082262210796915) internal successors, (470), 406 states have internal predecessors, (470), 203 states have call successors, (203), 42 states have call predecessors, (203), 55 states have return successors, (316), 199 states have call predecessors, (316), 199 states have call successors, (316) [2023-11-23 08:29:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 989 transitions. [2023-11-23 08:29:09,833 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 989 transitions. Word has length 113 [2023-11-23 08:29:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:29:09,833 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 989 transitions. [2023-11-23 08:29:09,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 15 states have internal predecessors, (62), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-23 08:29:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 989 transitions. [2023-11-23 08:29:09,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 08:29:09,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:29:09,836 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:09,866 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 08:29:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 08:29:10,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:29:10,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:29:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 253028409, now seen corresponding path program 1 times [2023-11-23 08:29:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:29:10,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783825798] [2023-11-23 08:29:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:10,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:29:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:29:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:29:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:29:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:29:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:29:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:29:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:29:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:29:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:29:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:29:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:29:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:29:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:29:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:29:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 08:29:10,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:29:10,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783825798] [2023-11-23 08:29:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783825798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:29:10,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858490469] [2023-11-23 08:29:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:10,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:29:10,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:29:10,297 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 08:29:10,298 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 08:29:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:10,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:29:10,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:29:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 08:29:10,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:29:10,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858490469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:29:10,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:29:10,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 08:29:10,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313916257] [2023-11-23 08:29:10,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:29:10,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:29:10,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:29:10,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:29:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:29:10,715 INFO L87 Difference]: Start difference. First operand 648 states and 989 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 08:29:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:29:11,148 INFO L93 Difference]: Finished difference Result 1184 states and 1788 transitions. [2023-11-23 08:29:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:29:11,148 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 113 [2023-11-23 08:29:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:29:11,152 INFO L225 Difference]: With dead ends: 1184 [2023-11-23 08:29:11,152 INFO L226 Difference]: Without dead ends: 549 [2023-11-23 08:29:11,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:29:11,158 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 6 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:29:11,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 406 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:29:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-11-23 08:29:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 523. [2023-11-23 08:29:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 310 states have (on average 1.1838709677419355) internal successors, (367), 322 states have internal predecessors, (367), 167 states have call successors, (167), 37 states have call predecessors, (167), 45 states have return successors, (245), 163 states have call predecessors, (245), 164 states have call successors, (245) [2023-11-23 08:29:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 779 transitions. [2023-11-23 08:29:11,212 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 779 transitions. Word has length 113 [2023-11-23 08:29:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:29:11,212 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 779 transitions. [2023-11-23 08:29:11,212 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 08:29:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 779 transitions. [2023-11-23 08:29:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 08:29:11,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:29:11,215 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:11,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:29:11,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 08:29:11,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:29:11,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:29:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1469210785, now seen corresponding path program 1 times [2023-11-23 08:29:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:29:11,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836424941] [2023-11-23 08:29:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:11,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:29:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:29:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:29:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:29:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:29:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:29:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:29:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:29:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:29:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:29:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:29:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:29:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:29:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:29:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:29:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:29:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 08:29:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:29:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836424941] [2023-11-23 08:29:12,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836424941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:29:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167902774] [2023-11-23 08:29:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:12,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:29:12,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:29:12,130 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 08:29:12,168 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 08:29:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:12,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 92 conjunts are in the unsatisfiable core [2023-11-23 08:29:12,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:29:12,566 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 08:29:12,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 18 [2023-11-23 08:29:12,984 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 20 [2023-11-23 08:29:12,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-23 08:29:12,992 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 20 [2023-11-23 08:29:12,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-23 08:29:13,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2023-11-23 08:29:13,055 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-23 08:29:13,055 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 08:29:13,259 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 08:29:13,284 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 08:29:13,286 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 08:29:13,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-23 08:29:13,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-11-23 08:29:13,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2023-11-23 08:29:13,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:29:13,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 147 [2023-11-23 08:29:13,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:29:13,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 117 [2023-11-23 08:29:13,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:29:13,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 87 [2023-11-23 08:29:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 68 proven. 12 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 08:29:14,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:29:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167902774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:29:15,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:29:15,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16] total 21 [2023-11-23 08:29:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044515681] [2023-11-23 08:29:15,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:29:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 08:29:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:29:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 08:29:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:29:15,119 INFO L87 Difference]: Start difference. First operand 523 states and 779 transitions. Second operand has 21 states, 19 states have (on average 5.0) internal successors, (95), 17 states have internal predecessors, (95), 7 states have call successors, (37), 8 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36) [2023-11-23 08:29:17,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:29:22,320 WARN L539 Checker$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 08:29:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:29:24,174 INFO L93 Difference]: Finished difference Result 1058 states and 1658 transitions. [2023-11-23 08:29:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 08:29:24,175 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.0) internal successors, (95), 17 states have internal predecessors, (95), 7 states have call successors, (37), 8 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36) Word has length 117 [2023-11-23 08:29:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:29:24,179 INFO L225 Difference]: With dead ends: 1058 [2023-11-23 08:29:24,179 INFO L226 Difference]: Without dead ends: 631 [2023-11-23 08:29:24,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 199 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 08:29:24,182 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 388 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 362 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:29:24,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 534 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1986 Invalid, 14 Unknown, 0 Unchecked, 8.1s Time] [2023-11-23 08:29:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-11-23 08:29:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 527. [2023-11-23 08:29:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 313 states have (on average 1.1661341853035143) internal successors, (365), 324 states have internal predecessors, (365), 168 states have call successors, (168), 38 states have call predecessors, (168), 45 states have return successors, (246), 164 states have call predecessors, (246), 165 states have call successors, (246) [2023-11-23 08:29:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 779 transitions. [2023-11-23 08:29:24,250 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 779 transitions. Word has length 117 [2023-11-23 08:29:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:29:24,250 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 779 transitions. [2023-11-23 08:29:24,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.0) internal successors, (95), 17 states have internal predecessors, (95), 7 states have call successors, (37), 8 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 7 states have call successors, (36) [2023-11-23 08:29:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 779 transitions. [2023-11-23 08:29:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 08:29:24,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:29:24,253 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:29:24,272 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 08:29:24,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:29:24,463 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:29:24,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:29:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1967468835, now seen corresponding path program 1 times [2023-11-23 08:29:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:29:24,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217269737] [2023-11-23 08:29:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:24,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:29:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:29:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:29:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:29:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:29:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:29:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:29:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:29:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:29:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:29:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:29:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:29:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:29:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:24,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:29:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:29:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:29:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:29:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 08:29:25,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:29:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217269737] [2023-11-23 08:29:25,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217269737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:29:25,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:29:25,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:29:25,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276177493] [2023-11-23 08:29:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:29:25,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:29:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:29:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:29:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:29:25,068 INFO L87 Difference]: Start difference. First operand 527 states and 779 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 08:29:27,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:29:27,126 INFO L93 Difference]: Finished difference Result 551 states and 807 transitions. [2023-11-23 08:29:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:29:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 118 [2023-11-23 08:29:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:29:27,147 INFO L225 Difference]: With dead ends: 551 [2023-11-23 08:29:27,147 INFO L226 Difference]: Without dead ends: 549 [2023-11-23 08:29:27,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:29:27,149 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 68 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:29:27,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 483 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 08:29:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-11-23 08:29:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 544. [2023-11-23 08:29:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 322 states have (on average 1.1614906832298137) internal successors, (374), 333 states have internal predecessors, (374), 173 states have call successors, (173), 41 states have call predecessors, (173), 48 states have return successors, (251), 169 states have call predecessors, (251), 170 states have call successors, (251) [2023-11-23 08:29:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 798 transitions. [2023-11-23 08:29:27,219 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 798 transitions. Word has length 118 [2023-11-23 08:29:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:29:27,219 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 798 transitions. [2023-11-23 08:29:27,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 08:29:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 798 transitions. [2023-11-23 08:29:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 08:29:27,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:29:27,222 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 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 08:29:27,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 08:29:27,222 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:29:27,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:29:27,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1001386702, now seen corresponding path program 1 times [2023-11-23 08:29:27,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:29:27,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610989675] [2023-11-23 08:29:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:27,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:29:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:29:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:29:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:29:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:29:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:29:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:29:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:29:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:29:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:29:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:29:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:29:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:29:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:29:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:29:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:29:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:29:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-23 08:29:28,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:29:28,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610989675] [2023-11-23 08:29:28,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610989675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:29:28,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514982468] [2023-11-23 08:29:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:28,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:29:28,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:29:28,773 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 08:29:28,774 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 08:29:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:29,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-23 08:29:29,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:29:29,236 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 08:29:29,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 18 [2023-11-23 08:29:29,477 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 13 treesize of output 9 [2023-11-23 08:29:29,489 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 13 treesize of output 9 [2023-11-23 08:29:29,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 08:29:30,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:29:30,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 08:29:30,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:29:30,082 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-23 08:29:30,082 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 08:29:30,294 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 08:29:30,296 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 08:29:30,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-23 08:29:30,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-23 08:29:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 88 proven. 22 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 08:29:30,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:29:30,810 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_aws_byte_cursor_eq_ignore_case_harness_~#rhs~0#1.offset| 8))) (and (forall ((v_ArrVal_1115 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_byte_cursor_eq_ignore_case_harness_~#old_byte_from_lhs~0#1.base| v_ArrVal_1115) |c_ULTIMATE.start_aws_byte_cursor_eq_ignore_case_harness_~#rhs~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_1116 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_eq_ignore_case_harness_~#old_byte_from_lhs~0#1.base| v_ArrVal_1116) |c_ULTIMATE.start_aws_byte_cursor_eq_ignore_case_harness_~#rhs~0#1.base|) .cse0) 0)))) is different from false [2023-11-23 08:29:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514982468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:29:30,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:29:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2023-11-23 08:29:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107484508] [2023-11-23 08:29:30,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:29:30,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 08:29:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:29:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 08:29:30,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1362, Unknown=1, NotChecked=74, Total=1560 [2023-11-23 08:29:30,813 INFO L87 Difference]: Start difference. First operand 544 states and 798 transitions. Second operand has 37 states, 31 states have (on average 3.193548387096774) internal successors, (99), 32 states have internal predecessors, (99), 16 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2023-11-23 08:29:42,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:29:42,188 INFO L93 Difference]: Finished difference Result 1265 states and 1934 transitions. [2023-11-23 08:29:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-23 08:29:42,188 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 3.193548387096774) internal successors, (99), 32 states have internal predecessors, (99), 16 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) Word has length 123 [2023-11-23 08:29:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:29:42,218 INFO L225 Difference]: With dead ends: 1265 [2023-11-23 08:29:42,219 INFO L226 Difference]: Without dead ends: 1125 [2023-11-23 08:29:42,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 211 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=782, Invalid=6193, Unknown=1, NotChecked=164, Total=7140 [2023-11-23 08:29:42,222 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1210 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 4463 mSolverCounterSat, 1124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1124 IncrementalHoareTripleChecker+Valid, 4463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:29:42,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 1220 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1124 Valid, 4463 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-23 08:29:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2023-11-23 08:29:42,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 866. [2023-11-23 08:29:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 509 states have (on average 1.1591355599214146) internal successors, (590), 523 states have internal predecessors, (590), 292 states have call successors, (292), 53 states have call predecessors, (292), 64 states have return successors, (436), 289 states have call predecessors, (436), 288 states have call successors, (436) [2023-11-23 08:29:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1318 transitions. [2023-11-23 08:29:42,370 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1318 transitions. Word has length 123 [2023-11-23 08:29:42,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:29:42,370 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1318 transitions. [2023-11-23 08:29:42,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 3.193548387096774) internal successors, (99), 32 states have internal predecessors, (99), 16 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2023-11-23 08:29:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1318 transitions. [2023-11-23 08:29:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 08:29:42,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:29:42,373 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:42,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:29:42,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:29:42,604 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:29:42,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:29:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash -34162480, now seen corresponding path program 1 times [2023-11-23 08:29:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:29:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35534513] [2023-11-23 08:29:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:29:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:29:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:29:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:29:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:29:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:29:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:29:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:29:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:29:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:29:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:29:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:29:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:29:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:29:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:29:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:29:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:29:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:29:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-23 08:29:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:29:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35534513] [2023-11-23 08:29:43,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35534513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:29:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173685689] [2023-11-23 08:29:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:29:43,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:29:43,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:29:43,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:29:43,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:29:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:29:44,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 125 conjunts are in the unsatisfiable core [2023-11-23 08:29:44,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:29:44,413 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 08:29:44,491 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 13 treesize of output 9 [2023-11-23 08:29:44,493 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 19 treesize of output 1 [2023-11-23 08:29:44,703 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 15 treesize of output 18 [2023-11-23 08:29:44,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2023-11-23 08:29:44,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 08:29:44,721 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 16 treesize of output 11 [2023-11-23 08:29:45,046 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 08:29:45,048 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 08:29:45,378 INFO L349 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-11-23 08:29:45,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 36 [2023-11-23 08:29:45,404 INFO L349 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-11-23 08:29:45,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2023-11-23 08:29:45,430 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 9 treesize of output 7 [2023-11-23 08:29:45,440 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 20 treesize of output 12 [2023-11-23 08:30:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 69 proven. 51 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 08:30:13,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:30:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-23 08:30:19,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173685689] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:30:19,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:30:19,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 32, 11] total 54 [2023-11-23 08:30:19,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760376562] [2023-11-23 08:30:19,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:30:19,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-23 08:30:19,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:30:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-23 08:30:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2638, Unknown=24, NotChecked=0, Total=2862 [2023-11-23 08:30:19,252 INFO L87 Difference]: Start difference. First operand 866 states and 1318 transitions. Second operand has 54 states, 46 states have (on average 3.239130434782609) internal successors, (149), 47 states have internal predecessors, (149), 17 states have call successors, (53), 9 states have call predecessors, (53), 14 states have return successors, (51), 16 states have call predecessors, (51), 17 states have call successors, (51) [2023-11-23 08:30:23,272 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 08:30:32,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:30:38,803 WARN L539 Checker$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 08:30:43,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:30:47,364 WARN L539 Checker$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 08:30:49,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:30:51,401 WARN L539 Checker$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 08:30:53,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:30:55,763 WARN L539 Checker$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 08:31:01,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:03,624 WARN L539 Checker$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 08:31:06,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:08,194 WARN L539 Checker$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 08:31:10,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:12,320 WARN L539 Checker$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 08:31:17,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:19,222 WARN L539 Checker$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 08:31:21,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:23,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:32,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:34,981 WARN L539 Checker$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 08:31:37,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:17,972 WARN L539 Checker$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 08:32:20,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:24,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15