./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_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 e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:18:01,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:18:01,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:18:01,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:18:01,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:18:01,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:18:01,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:18:01,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:18:01,129 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:18:01,132 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:18:01,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:18:01,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:18:01,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:18:01,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:18:01,134 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:18:01,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:18:01,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:18:01,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:18:01,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:18:01,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:18:01,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:18:01,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:18:01,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:18:01,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:18:01,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:18:01,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:18:01,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:18:01,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:18:01,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:18:01,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:18:01,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:18:01,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:18:01,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:18:01,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:18:01,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:18:01,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:18:01,139 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:18:01,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:18:01,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:18:01,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:18:01,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:18:01,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:18:01,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:18:01,385 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:18:01,386 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:18:01,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i [2023-11-23 08:18:02,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:18:02,996 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:18:02,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i [2023-11-23 08:18:03,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51d73cc3/6d357d7c767f4cf380b82b966171bd92/FLAG6d9c055d8 [2023-11-23 08:18:03,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51d73cc3/6d357d7c767f4cf380b82b966171bd92 [2023-11-23 08:18:03,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:18:03,046 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:18:03,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:18:03,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:18:03,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:18:03,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:18:03" (1/1) ... [2023-11-23 08:18:03,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ef5591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:03, skipping insertion in model container [2023-11-23 08:18:03,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:18:03" (1/1) ... [2023-11-23 08:18:03,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:18:03,376 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2023-11-23 08:18:03,384 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i[4557,4570] [2023-11-23 08:18:04,205 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,208 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,210 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,217 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,218 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,241 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,526 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:18:04,527 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:18:04,527 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:18:04,528 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:18:04,529 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:18:04,530 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:18:04,530 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:18:04,531 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:18:04,531 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:18:04,532 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:18:04,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:18:04,922 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:18:04,935 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2023-11-23 08:18:04,936 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i[4557,4570] [2023-11-23 08:18:04,977 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,986 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:04,987 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:05,012 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:18:05,013 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:18:05,013 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:18:05,014 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:18:05,016 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:18:05,017 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:18:05,017 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:18:05,017 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:18:05,018 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:18:05,018 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:18:05,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 08:18:05,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:05,078 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:18:05,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 08:18:05,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:18:05,266 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,266 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,266 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,266 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,267 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,267 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,267 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,267 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,267 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,268 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,268 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,268 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,268 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,269 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,269 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,269 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,269 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,269 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:18:05,276 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:18:05,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05 WrapperNode [2023-11-23 08:18:05,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:18:05,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:18:05,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:18:05,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:18:05,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,445 INFO L138 Inliner]: procedures = 690, calls = 2622, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 865 [2023-11-23 08:18:05,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:18:05,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:18:05,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:18:05,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:18:05,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:18:05,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:18:05,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:18:05,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:18:05,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (1/1) ... [2023-11-23 08:18:05,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:18:05,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:05,605 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 08:18:05,668 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 08:18:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure htons [2023-11-23 08:18:05,702 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:18:05,703 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:18:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:18:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:18:05,703 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:18:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:18:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:18:05,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:18:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:18:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:18:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:18:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 08:18:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 08:18:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:18:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:18:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:18:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:18:05,705 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:18:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:18:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:18:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:18:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 08:18:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 08:18:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:18:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:18:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 08:18:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 08:18:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:18:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:18:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:18:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:18:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:18:06,002 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:18:06,004 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:18:06,721 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:18:06,912 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:18:06,913 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:18:06,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:06 BoogieIcfgContainer [2023-11-23 08:18:06,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:18:06,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:18:06,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:18:06,918 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:18:06,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:18:03" (1/3) ... [2023-11-23 08:18:06,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7546abd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:18:06, skipping insertion in model container [2023-11-23 08:18:06,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05" (2/3) ... [2023-11-23 08:18:06,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7546abd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:18:06, skipping insertion in model container [2023-11-23 08:18:06,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:06" (3/3) ... [2023-11-23 08:18:06,923 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2023-11-23 08:18:06,937 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:18:06,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:18:07,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:18:07,018 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;@751e3b67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:18:07,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:18:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 08:18:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 08:18:07,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:07,032 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:07,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1311018526, now seen corresponding path program 1 times [2023-11-23 08:18:07,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:07,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191676893] [2023-11-23 08:18:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:07,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:18:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:18:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:18:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:18:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:18:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:18:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:18:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 08:18:07,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:07,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191676893] [2023-11-23 08:18:07,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191676893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:07,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:18:07,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 08:18:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744330599] [2023-11-23 08:18:07,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:07,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:18:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:18:07,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:18:07,821 INFO L87 Difference]: Start difference. First operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:18:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:08,093 INFO L93 Difference]: Finished difference Result 230 states and 339 transitions. [2023-11-23 08:18:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:18:08,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2023-11-23 08:18:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:08,102 INFO L225 Difference]: With dead ends: 230 [2023-11-23 08:18:08,102 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 08:18:08,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:18:08,108 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 69 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:08,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 89 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:18:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 08:18:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-23 08:18:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 70 states have internal predecessors, (86), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 08:18:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2023-11-23 08:18:08,143 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 76 [2023-11-23 08:18:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:08,144 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2023-11-23 08:18:08,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:18:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2023-11-23 08:18:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 08:18:08,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:08,147 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:08,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:18:08,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:08,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2115463910, now seen corresponding path program 1 times [2023-11-23 08:18:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:08,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309546428] [2023-11-23 08:18:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:18:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:18:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:18:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:18:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:18:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:18:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:18:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 08:18:08,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:08,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309546428] [2023-11-23 08:18:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309546428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257527293] [2023-11-23 08:18:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:08,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:08,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:08,832 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 08:18:08,837 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 08:18:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:09,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:18:09,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:18:09,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:18:09,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257527293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:09,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:18:09,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 08:18:09,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940100863] [2023-11-23 08:18:09,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:09,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:18:09,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:09,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:18:09,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:18:09,562 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:18:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:09,999 INFO L93 Difference]: Finished difference Result 211 states and 290 transitions. [2023-11-23 08:18:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:18:10,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 76 [2023-11-23 08:18:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:10,002 INFO L225 Difference]: With dead ends: 211 [2023-11-23 08:18:10,002 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 08:18:10,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:18:10,004 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 42 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:10,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 445 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:18:10,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 08:18:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-23 08:18:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2023-11-23 08:18:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2023-11-23 08:18:10,014 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 76 [2023-11-23 08:18:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:10,015 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2023-11-23 08:18:10,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:18:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2023-11-23 08:18:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 08:18:10,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:10,017 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:10,050 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 08:18:10,236 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 08:18:10,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:10,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash 928001937, now seen corresponding path program 1 times [2023-11-23 08:18:10,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494694770] [2023-11-23 08:18:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:18:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:18:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:18:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:18:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:18:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:18:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:18:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 08:18:10,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:10,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494694770] [2023-11-23 08:18:10,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494694770] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:10,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343891623] [2023-11-23 08:18:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:10,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:10,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:10,734 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 08:18:10,763 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 08:18:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:11,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 2601 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:18:11,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 08:18:11,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:18:11,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343891623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:11,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:18:11,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-23 08:18:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275906059] [2023-11-23 08:18:11,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:11,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:18:11,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:18:11,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:18:11,259 INFO L87 Difference]: Start difference. First operand 116 states and 158 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 08:18:11,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:11,472 INFO L93 Difference]: Finished difference Result 206 states and 281 transitions. [2023-11-23 08:18:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:18:11,473 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2023-11-23 08:18:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:11,476 INFO L225 Difference]: With dead ends: 206 [2023-11-23 08:18:11,477 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 08:18:11,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:18:11,480 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 41 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:11,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 574 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:18:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 08:18:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-23 08:18:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-11-23 08:18:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2023-11-23 08:18:11,495 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 82 [2023-11-23 08:18:11,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:11,497 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2023-11-23 08:18:11,497 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 08:18:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2023-11-23 08:18:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 08:18:11,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:11,500 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-23 08:18:11,525 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 08:18:11,704 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 08:18:11,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:11,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1261322758, now seen corresponding path program 2 times [2023-11-23 08:18:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:11,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130629824] [2023-11-23 08:18:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:18:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:18:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:18:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:18:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:18:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:18:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:18:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:18:12,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:12,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130629824] [2023-11-23 08:18:12,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130629824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096536478] [2023-11-23 08:18:12,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:18:12,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:12,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:12,238 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 08:18:12,276 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 08:18:12,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:18:12,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:18:12,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:18:12,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:18:12,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:18:12,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096536478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:12,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:18:12,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-23 08:18:12,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147173068] [2023-11-23 08:18:12,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:12,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:18:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:12,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:18:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:18:12,802 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 08:18:13,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:13,241 INFO L93 Difference]: Finished difference Result 201 states and 272 transitions. [2023-11-23 08:18:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:18:13,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 88 [2023-11-23 08:18:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:13,243 INFO L225 Difference]: With dead ends: 201 [2023-11-23 08:18:13,243 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 08:18:13,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:18:13,244 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 57 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:13,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 682 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:18:13,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 08:18:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-23 08:18:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 70 states have internal predecessors, (85), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 08:18:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 152 transitions. [2023-11-23 08:18:13,251 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 152 transitions. Word has length 88 [2023-11-23 08:18:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:13,251 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 152 transitions. [2023-11-23 08:18:13,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 08:18:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 152 transitions. [2023-11-23 08:18:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 08:18:13,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:13,253 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:13,274 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 08:18:13,470 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 08:18:13,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:13,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:13,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2108567910, now seen corresponding path program 1 times [2023-11-23 08:18:13,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:13,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278432002] [2023-11-23 08:18:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:13,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:18:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:18:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:18:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:18:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:18:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:18:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:18:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 08:18:14,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:14,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278432002] [2023-11-23 08:18:14,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278432002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:14,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:18:14,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:18:14,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036623149] [2023-11-23 08:18:14,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:14,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:18:14,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:14,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:18:14,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:18:14,205 INFO L87 Difference]: Start difference. First operand 114 states and 152 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:18:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:15,433 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2023-11-23 08:18:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:18:15,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2023-11-23 08:18:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:15,436 INFO L225 Difference]: With dead ends: 125 [2023-11-23 08:18:15,436 INFO L226 Difference]: Without dead ends: 123 [2023-11-23 08:18:15,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:18:15,437 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 97 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:15,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 362 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:18:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-23 08:18:15,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2023-11-23 08:18:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 76 states have internal predecessors, (90), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2023-11-23 08:18:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 165 transitions. [2023-11-23 08:18:15,446 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 165 transitions. Word has length 100 [2023-11-23 08:18:15,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:15,446 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 165 transitions. [2023-11-23 08:18:15,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:18:15,447 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 165 transitions. [2023-11-23 08:18:15,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 08:18:15,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:15,448 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:15,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 08:18:15,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:15,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1735983778, now seen corresponding path program 1 times [2023-11-23 08:18:15,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:15,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991363832] [2023-11-23 08:18:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:15,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:18:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:18:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:18:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:18:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:18:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:18:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:18:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 08:18:16,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:16,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991363832] [2023-11-23 08:18:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991363832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:16,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:18:16,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:18:16,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756608497] [2023-11-23 08:18:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:18:16,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:18:16,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:18:16,381 INFO L87 Difference]: Start difference. First operand 122 states and 165 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:18:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:17,354 INFO L93 Difference]: Finished difference Result 248 states and 353 transitions. [2023-11-23 08:18:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:18:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-11-23 08:18:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:17,356 INFO L225 Difference]: With dead ends: 248 [2023-11-23 08:18:17,356 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 08:18:17,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:18:17,357 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 131 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:17,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 211 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:18:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 08:18:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2023-11-23 08:18:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 81 states have internal predecessors, (97), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2023-11-23 08:18:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2023-11-23 08:18:17,365 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 104 [2023-11-23 08:18:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:17,365 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2023-11-23 08:18:17,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:18:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2023-11-23 08:18:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 08:18:17,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:17,366 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:17,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 08:18:17,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:17,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:17,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1034919200, now seen corresponding path program 1 times [2023-11-23 08:18:17,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:17,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069083588] [2023-11-23 08:18:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:17,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:18:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:18:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:18:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:18:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:18:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:18:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:18:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 08:18:18,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:18,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069083588] [2023-11-23 08:18:18,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069083588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:18,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328712934] [2023-11-23 08:18:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:18,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:18,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:18,576 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 08:18:18,600 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 08:18:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:18,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 08:18:18,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:19,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:18:19,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:18:19,305 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 24 treesize of output 12 [2023-11-23 08:18:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 08:18:19,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:18:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328712934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:19,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:18:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2023-11-23 08:18:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123657743] [2023-11-23 08:18:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:18:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:18:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:18:19,518 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:18:22,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:18:25,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:18:27,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:18:29,094 WARN L539 Checker$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 08:18:31,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:18:33,166 WARN L539 Checker$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 08:18:35,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:18:37,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:18:37,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:37,292 INFO L93 Difference]: Finished difference Result 267 states and 360 transitions. [2023-11-23 08:18:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:18:37,293 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 104 [2023-11-23 08:18:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:37,294 INFO L225 Difference]: With dead ends: 267 [2023-11-23 08:18:37,294 INFO L226 Difference]: Without dead ends: 156 [2023-11-23 08:18:37,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-11-23 08:18:37,295 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 77 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 17 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:37,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 955 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 453 Invalid, 8 Unknown, 0 Unchecked, 17.6s Time] [2023-11-23 08:18:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-23 08:18:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2023-11-23 08:18:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 103 states have (on average 1.233009708737864) internal successors, (127), 106 states have internal predecessors, (127), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (41), 35 states have call predecessors, (41), 36 states have call successors, (41) [2023-11-23 08:18:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 205 transitions. [2023-11-23 08:18:37,308 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 205 transitions. Word has length 104 [2023-11-23 08:18:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:37,309 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 205 transitions. [2023-11-23 08:18:37,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:18:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 205 transitions. [2023-11-23 08:18:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 08:18:37,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:37,311 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:37,342 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 08:18:37,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:37,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:37,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1886310496, now seen corresponding path program 2 times [2023-11-23 08:18:37,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:37,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785584506] [2023-11-23 08:18:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:37,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:18:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:18:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:18:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:18:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:18:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:18:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:18:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 08:18:38,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:38,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785584506] [2023-11-23 08:18:38,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785584506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:38,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159029007] [2023-11-23 08:18:38,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:18:38,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:38,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:38,238 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 08:18:38,245 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 08:18:38,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:18:38,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:18:38,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 08:18:38,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 85 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 08:18:39,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:18:39,622 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 08:18:39,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2023-11-23 08:18:39,629 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-23 08:18:39,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-11-23 08:18:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 44 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:18:39,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159029007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:18:39,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:18:39,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2023-11-23 08:18:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634318859] [2023-11-23 08:18:39,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:18:39,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 08:18:39,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 08:18:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:18:39,657 INFO L87 Difference]: Start difference. First operand 155 states and 205 transitions. Second operand has 26 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 24 states have internal predecessors, (95), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 08:18:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:44,577 INFO L93 Difference]: Finished difference Result 481 states and 649 transitions. [2023-11-23 08:18:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-23 08:18:44,578 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 24 states have internal predecessors, (95), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 112 [2023-11-23 08:18:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:44,581 INFO L225 Difference]: With dead ends: 481 [2023-11-23 08:18:44,581 INFO L226 Difference]: Without dead ends: 345 [2023-11-23 08:18:44,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 237 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=852, Invalid=4118, Unknown=0, NotChecked=0, Total=4970 [2023-11-23 08:18:44,584 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 453 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:44,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 601 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-23 08:18:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-23 08:18:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 271. [2023-11-23 08:18:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 187 states have (on average 1.2566844919786095) internal successors, (235), 191 states have internal predecessors, (235), 59 states have call successors, (59), 21 states have call predecessors, (59), 24 states have return successors, (68), 58 states have call predecessors, (68), 57 states have call successors, (68) [2023-11-23 08:18:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 362 transitions. [2023-11-23 08:18:44,601 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 362 transitions. Word has length 112 [2023-11-23 08:18:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:44,601 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 362 transitions. [2023-11-23 08:18:44,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 24 states have internal predecessors, (95), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 08:18:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 362 transitions. [2023-11-23 08:18:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 08:18:44,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:44,603 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-23 08:18:44,620 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 08:18:44,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:44,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:44,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:44,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1472331779, now seen corresponding path program 1 times [2023-11-23 08:18:44,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:44,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506495923] [2023-11-23 08:18:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:44,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:18:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:18:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:18:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:18:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:18:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:18:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:18:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 08:18:45,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:45,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506495923] [2023-11-23 08:18:45,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506495923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:45,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153361519] [2023-11-23 08:18:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:45,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:45,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:45,112 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 08:18:45,130 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 08:18:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:45,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:18:45,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 08:18:45,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:18:45,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153361519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:45,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:18:45,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 08:18:45,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905453397] [2023-11-23 08:18:45,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:45,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:18:45,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:45,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:18:45,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:18:45,532 INFO L87 Difference]: Start difference. First operand 271 states and 362 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:18:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:45,863 INFO L93 Difference]: Finished difference Result 548 states and 742 transitions. [2023-11-23 08:18:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:18:45,863 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-11-23 08:18:45,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:45,866 INFO L225 Difference]: With dead ends: 548 [2023-11-23 08:18:45,866 INFO L226 Difference]: Without dead ends: 300 [2023-11-23 08:18:45,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:18:45,868 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 9 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:45,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 407 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:18:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-23 08:18:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 279. [2023-11-23 08:18:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 195 states have (on average 1.2461538461538462) internal successors, (243), 199 states have internal predecessors, (243), 59 states have call successors, (59), 21 states have call predecessors, (59), 24 states have return successors, (68), 58 states have call predecessors, (68), 57 states have call successors, (68) [2023-11-23 08:18:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 370 transitions. [2023-11-23 08:18:45,915 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 370 transitions. Word has length 114 [2023-11-23 08:18:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:45,916 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 370 transitions. [2023-11-23 08:18:45,916 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:18:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 370 transitions. [2023-11-23 08:18:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 08:18:45,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:45,919 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:45,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 08:18:46,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:46,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:46,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:46,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1714238137, now seen corresponding path program 1 times [2023-11-23 08:18:46,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:46,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224960] [2023-11-23 08:18:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:46,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:18:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:18:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:18:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:18:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:18:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:18:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:18:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 08:18:46,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224960] [2023-11-23 08:18:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719885841] [2023-11-23 08:18:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:46,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:46,409 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 08:18:46,434 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 08:18:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:46,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:18:46,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 08:18:46,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:18:46,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719885841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:18:46,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:18:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 08:18:46,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639419759] [2023-11-23 08:18:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:18:46,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:18:46,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:18:46,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:18:46,839 INFO L87 Difference]: Start difference. First operand 279 states and 370 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:18:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:47,087 INFO L93 Difference]: Finished difference Result 583 states and 782 transitions. [2023-11-23 08:18:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:18:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-11-23 08:18:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:47,089 INFO L225 Difference]: With dead ends: 583 [2023-11-23 08:18:47,089 INFO L226 Difference]: Without dead ends: 327 [2023-11-23 08:18:47,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:18:47,090 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 28 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:47,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 423 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:18:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-23 08:18:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 279. [2023-11-23 08:18:47,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 195 states have (on average 1.2256410256410257) internal successors, (239), 199 states have internal predecessors, (239), 59 states have call successors, (59), 21 states have call predecessors, (59), 24 states have return successors, (68), 58 states have call predecessors, (68), 57 states have call successors, (68) [2023-11-23 08:18:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 366 transitions. [2023-11-23 08:18:47,101 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 366 transitions. Word has length 114 [2023-11-23 08:18:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:47,101 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 366 transitions. [2023-11-23 08:18:47,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:18:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 366 transitions. [2023-11-23 08:18:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 08:18:47,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:47,103 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:18:47,118 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 08:18:47,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:47,312 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:47,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:47,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1994452937, now seen corresponding path program 2 times [2023-11-23 08:18:47,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:47,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533674521] [2023-11-23 08:18:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:47,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:18:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:18:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:18:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:18:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:18:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:18:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:18:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 08:18:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533674521] [2023-11-23 08:18:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533674521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952157364] [2023-11-23 08:18:48,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:18:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:48,193 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 08:18:48,208 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 08:18:48,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:18:48,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:18:48,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-23 08:18:48,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:48,659 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 08:18:48,672 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 08:18:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 83 proven. 5 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 08:18:49,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:18:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 44 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:18:49,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952157364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:18:49,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:18:49,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 11] total 32 [2023-11-23 08:18:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847578444] [2023-11-23 08:18:49,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:18:49,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-23 08:18:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:18:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-23 08:18:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2023-11-23 08:18:49,502 INFO L87 Difference]: Start difference. First operand 279 states and 366 transitions. Second operand has 32 states, 29 states have (on average 3.9310344827586206) internal successors, (114), 29 states have internal predecessors, (114), 8 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2023-11-23 08:18:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:18:55,868 INFO L93 Difference]: Finished difference Result 844 states and 1121 transitions. [2023-11-23 08:18:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-23 08:18:55,869 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.9310344827586206) internal successors, (114), 29 states have internal predecessors, (114), 8 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 114 [2023-11-23 08:18:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:18:55,871 INFO L225 Difference]: With dead ends: 844 [2023-11-23 08:18:55,871 INFO L226 Difference]: Without dead ends: 596 [2023-11-23 08:18:55,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 232 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1144, Invalid=7046, Unknown=0, NotChecked=0, Total=8190 [2023-11-23 08:18:55,875 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 508 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 3919 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 4107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 3919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:18:55,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 687 Invalid, 4107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 3919 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-23 08:18:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-11-23 08:18:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 528. [2023-11-23 08:18:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 377 states have (on average 1.209549071618037) internal successors, (456), 387 states have internal predecessors, (456), 103 states have call successors, (103), 36 states have call predecessors, (103), 47 states have return successors, (139), 104 states have call predecessors, (139), 99 states have call successors, (139) [2023-11-23 08:18:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 698 transitions. [2023-11-23 08:18:55,906 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 698 transitions. Word has length 114 [2023-11-23 08:18:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:18:55,906 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 698 transitions. [2023-11-23 08:18:55,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.9310344827586206) internal successors, (114), 29 states have internal predecessors, (114), 8 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2023-11-23 08:18:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 698 transitions. [2023-11-23 08:18:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 08:18:55,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:18:55,910 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 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] [2023-11-23 08:18:55,928 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 08:18:56,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:18:56,126 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:18:56,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:18:56,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1063276670, now seen corresponding path program 1 times [2023-11-23 08:18:56,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:18:56,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801059480] [2023-11-23 08:18:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:18:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:18:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:18:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:18:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:18:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:18:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:18:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:18:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:18:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:18:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:57,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:18:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:18:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:57,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:18:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-23 08:18:57,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:18:57,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801059480] [2023-11-23 08:18:57,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801059480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:18:57,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492761553] [2023-11-23 08:18:57,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:18:57,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:18:57,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:18:57,164 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 08:18:57,166 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 08:18:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:18:57,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 89 conjunts are in the unsatisfiable core [2023-11-23 08:18:57,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:18:57,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:18:57,792 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:18:57,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-23 08:18:57,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:18:58,270 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:18:58,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2023-11-23 08:18:58,306 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 26 treesize of output 19 [2023-11-23 08:19:00,389 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 26 treesize of output 19 [2023-11-23 08:19:00,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:19:00,421 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 24 treesize of output 12 [2023-11-23 08:19:04,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:19:04,598 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 24 treesize of output 12 [2023-11-23 08:19:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 95 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 08:19:06,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:19:09,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492761553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:19:09,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:19:09,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21] total 30 [2023-11-23 08:19:09,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564874969] [2023-11-23 08:19:09,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:19:09,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 08:19:09,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:19:09,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 08:19:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1286, Unknown=2, NotChecked=0, Total=1406 [2023-11-23 08:19:09,175 INFO L87 Difference]: Start difference. First operand 528 states and 698 transitions. Second operand has 30 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 12 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-23 08:19:16,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:19:18,577 WARN L539 Checker$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 08:19:20,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:19:22,732 WARN L539 Checker$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 08:19:25,012 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 08:19:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:19:25,353 INFO L93 Difference]: Finished difference Result 1190 states and 1526 transitions. [2023-11-23 08:19:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-23 08:19:25,353 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 12 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 116 [2023-11-23 08:19:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:19:25,356 INFO L225 Difference]: With dead ends: 1190 [2023-11-23 08:19:25,356 INFO L226 Difference]: Without dead ends: 703 [2023-11-23 08:19:25,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 162 SyntacticMatches, 12 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=992, Invalid=6488, Unknown=2, NotChecked=0, Total=7482 [2023-11-23 08:19:25,361 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1101 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 400 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:19:25,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 509 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2605 Invalid, 5 Unknown, 0 Unchecked, 14.1s Time] [2023-11-23 08:19:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-11-23 08:19:25,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 337. [2023-11-23 08:19:25,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 250 states have (on average 1.204) internal successors, (301), 257 states have internal predecessors, (301), 56 states have call successors, (56), 25 states have call predecessors, (56), 30 states have return successors, (63), 54 states have call predecessors, (63), 53 states have call successors, (63) [2023-11-23 08:19:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 420 transitions. [2023-11-23 08:19:25,386 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 420 transitions. Word has length 116 [2023-11-23 08:19:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:19:25,387 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 420 transitions. [2023-11-23 08:19:25,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 12 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-23 08:19:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 420 transitions. [2023-11-23 08:19:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:19:25,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:19:25,388 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2023-11-23 08:19:25,418 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 08:19:25,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:19:25,603 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:19:25,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:19:25,604 INFO L85 PathProgramCache]: Analyzing trace with hash 938367880, now seen corresponding path program 1 times [2023-11-23 08:19:25,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:19:25,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310770297] [2023-11-23 08:19:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:19:25,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:19:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:19:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:19:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:19:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:19:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:19:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:19:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:19:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:19:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:19:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:19:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:19:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:19:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 08:19:26,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:19:26,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310770297] [2023-11-23 08:19:26,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310770297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:19:26,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137637375] [2023-11-23 08:19:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:19:26,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:19:26,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:19:26,283 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 08:19:26,316 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 08:19:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:26,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:19:26,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:19:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 08:19:26,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:19:26,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137637375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:19:26,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:19:26,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 08:19:26,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920014380] [2023-11-23 08:19:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:19:26,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:19:26,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:19:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:19:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:19:26,747 INFO L87 Difference]: Start difference. First operand 337 states and 420 transitions. Second operand has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:19:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:19:27,412 INFO L93 Difference]: Finished difference Result 585 states and 726 transitions. [2023-11-23 08:19:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:19:27,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 120 [2023-11-23 08:19:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:19:27,414 INFO L225 Difference]: With dead ends: 585 [2023-11-23 08:19:27,414 INFO L226 Difference]: Without dead ends: 302 [2023-11-23 08:19:27,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:19:27,415 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 13 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:19:27,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1002 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:19:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-23 08:19:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 276. [2023-11-23 08:19:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 204 states have (on average 1.2156862745098038) internal successors, (248), 208 states have internal predecessors, (248), 48 states have call successors, (48), 21 states have call predecessors, (48), 23 states have return successors, (48), 46 states have call predecessors, (48), 45 states have call successors, (48) [2023-11-23 08:19:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 344 transitions. [2023-11-23 08:19:27,436 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 344 transitions. Word has length 120 [2023-11-23 08:19:27,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:19:27,436 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 344 transitions. [2023-11-23 08:19:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:19:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 344 transitions. [2023-11-23 08:19:27,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:19:27,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:19:27,438 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:19:27,458 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 08:19:27,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:19:27,653 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:19:27,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:19:27,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1003298353, now seen corresponding path program 1 times [2023-11-23 08:19:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:19:27,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710510021] [2023-11-23 08:19:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:19:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:19:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:19:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:19:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:19:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:19:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:19:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:19:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:19:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:19:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:19:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:19:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:19:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:19:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 08:19:28,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:19:28,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710510021] [2023-11-23 08:19:28,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710510021] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:19:28,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277530005] [2023-11-23 08:19:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:19:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:19:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:19:28,888 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 08:19:28,906 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 08:19:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:29,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 08:19:29,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:19:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 08:19:29,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:19:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277530005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:19:29,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:19:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2023-11-23 08:19:29,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721076097] [2023-11-23 08:19:29,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:19:29,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:19:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:19:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:19:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2023-11-23 08:19:29,648 INFO L87 Difference]: Start difference. First operand 276 states and 344 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 11 states have internal predecessors, (51), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 08:19:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:19:32,308 INFO L93 Difference]: Finished difference Result 592 states and 734 transitions. [2023-11-23 08:19:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 08:19:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 11 states have internal predecessors, (51), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 122 [2023-11-23 08:19:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:19:32,311 INFO L225 Difference]: With dead ends: 592 [2023-11-23 08:19:32,312 INFO L226 Difference]: Without dead ends: 399 [2023-11-23 08:19:32,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 08:19:32,313 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 168 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:19:32,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1244 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 08:19:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-11-23 08:19:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 301. [2023-11-23 08:19:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 227 states have (on average 1.2114537444933922) internal successors, (275), 232 states have internal predecessors, (275), 49 states have call successors, (49), 22 states have call predecessors, (49), 24 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2023-11-23 08:19:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2023-11-23 08:19:32,330 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 122 [2023-11-23 08:19:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:19:32,331 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2023-11-23 08:19:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 11 states have internal predecessors, (51), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 08:19:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2023-11-23 08:19:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:19:32,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:19:32,332 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:19:32,360 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 08:19:32,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 08:19:32,548 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:19:32,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:19:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash -7818897, now seen corresponding path program 1 times [2023-11-23 08:19:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:19:32,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470888448] [2023-11-23 08:19:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:19:32,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:19:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:19:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:19:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:19:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:19:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:19:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:19:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:19:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:19:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:19:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:19:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:19:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:19:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 08:19:33,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:19:33,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470888448] [2023-11-23 08:19:33,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470888448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:19:33,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134531764] [2023-11-23 08:19:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:19:33,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:19:33,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:19:33,747 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 08:19:33,770 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 08:19:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:34,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-23 08:19:34,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:19:34,396 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:19:34,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2023-11-23 08:19:34,452 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-23 08:19:34,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2023-11-23 08:19:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 67 proven. 41 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 08:19:34,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:19:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 56 proven. 13 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:19:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134531764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:19:35,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:19:35,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 10] total 31 [2023-11-23 08:19:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853522701] [2023-11-23 08:19:35,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:19:35,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 08:19:35,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:19:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 08:19:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:19:35,288 INFO L87 Difference]: Start difference. First operand 301 states and 373 transitions. Second operand has 31 states, 28 states have (on average 4.25) internal successors, (119), 28 states have internal predecessors, (119), 11 states have call successors, (32), 6 states have call predecessors, (32), 5 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) [2023-11-23 08:19:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:19:39,829 INFO L93 Difference]: Finished difference Result 762 states and 925 transitions. [2023-11-23 08:19:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-23 08:19:39,830 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.25) internal successors, (119), 28 states have internal predecessors, (119), 11 states have call successors, (32), 6 states have call predecessors, (32), 5 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) Word has length 122 [2023-11-23 08:19:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:19:39,832 INFO L225 Difference]: With dead ends: 762 [2023-11-23 08:19:39,832 INFO L226 Difference]: Without dead ends: 649 [2023-11-23 08:19:39,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 250 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=469, Invalid=3071, Unknown=0, NotChecked=0, Total=3540 [2023-11-23 08:19:39,835 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 502 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 3193 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 3193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:19:39,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 555 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 3193 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 08:19:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-11-23 08:19:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 365. [2023-11-23 08:19:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 273 states have (on average 1.1941391941391941) internal successors, (326), 281 states have internal predecessors, (326), 60 states have call successors, (60), 27 states have call predecessors, (60), 31 states have return successors, (67), 56 states have call predecessors, (67), 57 states have call successors, (67) [2023-11-23 08:19:39,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 453 transitions. [2023-11-23 08:19:39,863 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 453 transitions. Word has length 122 [2023-11-23 08:19:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:19:39,864 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 453 transitions. [2023-11-23 08:19:39,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.25) internal successors, (119), 28 states have internal predecessors, (119), 11 states have call successors, (32), 6 states have call predecessors, (32), 5 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) [2023-11-23 08:19:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 453 transitions. [2023-11-23 08:19:39,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:19:39,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:19:39,865 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:19:39,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:19:40,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 08:19:40,081 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:19:40,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:19:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1426000179, now seen corresponding path program 2 times [2023-11-23 08:19:40,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:19:40,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407713618] [2023-11-23 08:19:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:19:40,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:19:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:19:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:19:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:19:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:19:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:19:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:19:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:19:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:19:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:19:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:19:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:19:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:19:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:19:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 41 proven. 27 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 08:19:42,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:19:42,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407713618] [2023-11-23 08:19:42,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407713618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:19:42,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435342581] [2023-11-23 08:19:42,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:19:42,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:19:42,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:19:42,411 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:19:42,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:19:43,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:19:43,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:19:43,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-23 08:19:43,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:19:43,118 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 15 treesize of output 1 [2023-11-23 08:19:43,125 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 15 treesize of output 1 [2023-11-23 08:19:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:19:45,345 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 26 treesize of output 14 [2023-11-23 08:19:49,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:19:49,686 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 26 treesize of output 14 [2023-11-23 08:19:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 64 proven. 54 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 08:19:58,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:20:00,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435342581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:20:00,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:20:00,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 32 [2023-11-23 08:20:00,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822468470] [2023-11-23 08:20:00,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:20:00,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-23 08:20:00,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:20:00,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-23 08:20:00,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1353, Unknown=2, NotChecked=0, Total=1482 [2023-11-23 08:20:00,507 INFO L87 Difference]: Start difference. First operand 365 states and 453 transitions. Second operand has 32 states, 29 states have (on average 4.689655172413793) internal successors, (136), 29 states have internal predecessors, (136), 13 states have call successors, (26), 5 states have call predecessors, (26), 8 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) [2023-11-23 08:20:05,307 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 08:20:07,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:20:09,466 WARN L539 Checker$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 08:20:13,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:20:15,184 WARN L539 Checker$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 08:20:17,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:20:19,293 WARN L539 Checker$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 08:20:21,416 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 08:20:21,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:20:21,703 INFO L93 Difference]: Finished difference Result 533 states and 644 transitions. [2023-11-23 08:20:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 08:20:21,704 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.689655172413793) internal successors, (136), 29 states have internal predecessors, (136), 13 states have call successors, (26), 5 states have call predecessors, (26), 8 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) Word has length 122 [2023-11-23 08:20:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:20:21,706 INFO L225 Difference]: With dead ends: 533 [2023-11-23 08:20:21,706 INFO L226 Difference]: Without dead ends: 407 [2023-11-23 08:20:21,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 172 SyntacticMatches, 14 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=442, Invalid=3588, Unknown=2, NotChecked=0, Total=4032 [2023-11-23 08:20:21,708 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 403 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 3577 mSolverCounterSat, 154 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3577 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:20:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 489 Invalid, 3739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 3577 Invalid, 8 Unknown, 0 Unchecked, 20.5s Time] [2023-11-23 08:20:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-23 08:20:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 380. [2023-11-23 08:20:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 282 states have (on average 1.1666666666666667) internal successors, (329), 293 states have internal predecessors, (329), 60 states have call successors, (60), 29 states have call predecessors, (60), 37 states have return successors, (70), 57 states have call predecessors, (70), 57 states have call successors, (70) [2023-11-23 08:20:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 459 transitions. [2023-11-23 08:20:21,735 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 459 transitions. Word has length 122 [2023-11-23 08:20:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:20:21,735 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 459 transitions. [2023-11-23 08:20:21,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.689655172413793) internal successors, (136), 29 states have internal predecessors, (136), 13 states have call successors, (26), 5 states have call predecessors, (26), 8 states have return successors, (24), 11 states have call predecessors, (24), 11 states have call successors, (24) [2023-11-23 08:20:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 459 transitions. [2023-11-23 08:20:21,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:20:21,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:20:21,737 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:20:21,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-23 08:20:21,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 08:20:21,952 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:20:21,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:20:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1307250003, now seen corresponding path program 1 times [2023-11-23 08:20:21,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:20:21,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290381791] [2023-11-23 08:20:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:20:21,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:20:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:20:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:20:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:20:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:20:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:20:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:20:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:20:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:20:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:20:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:20:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:20:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:20:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:20:23,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:20:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290381791] [2023-11-23 08:20:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290381791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:20:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005757548] [2023-11-23 08:20:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:20:23,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:20:23,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:20:23,333 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:20:23,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:20:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:23,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 92 conjunts are in the unsatisfiable core [2023-11-23 08:20:23,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:20:23,837 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 15 treesize of output 1 [2023-11-23 08:20:23,847 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 15 treesize of output 1 [2023-11-23 08:20:24,024 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:20:24,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2023-11-23 08:20:24,081 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-23 08:20:24,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2023-11-23 08:20:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 08:20:24,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:20:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 56 proven. 13 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:20:25,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005757548] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:20:25,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:20:25,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 12] total 38 [2023-11-23 08:20:25,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616034705] [2023-11-23 08:20:25,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:20:25,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 08:20:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:20:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 08:20:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 08:20:25,457 INFO L87 Difference]: Start difference. First operand 380 states and 459 transitions. Second operand has 38 states, 36 states have (on average 3.5) internal successors, (126), 36 states have internal predecessors, (126), 11 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2023-11-23 08:20:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:20:32,339 INFO L93 Difference]: Finished difference Result 727 states and 870 transitions. [2023-11-23 08:20:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-23 08:20:32,339 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.5) internal successors, (126), 36 states have internal predecessors, (126), 11 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 122 [2023-11-23 08:20:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:20:32,343 INFO L225 Difference]: With dead ends: 727 [2023-11-23 08:20:32,343 INFO L226 Difference]: Without dead ends: 649 [2023-11-23 08:20:32,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 245 SyntacticMatches, 9 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1107, Invalid=5865, Unknown=0, NotChecked=0, Total=6972 [2023-11-23 08:20:32,346 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 509 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 3877 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 4110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:20:32,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 521 Invalid, 4110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 3877 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-23 08:20:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-11-23 08:20:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 405. [2023-11-23 08:20:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 304 states have (on average 1.1546052631578947) internal successors, (351), 316 states have internal predecessors, (351), 60 states have call successors, (60), 31 states have call predecessors, (60), 40 states have return successors, (70), 57 states have call predecessors, (70), 57 states have call successors, (70) [2023-11-23 08:20:32,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 481 transitions. [2023-11-23 08:20:32,381 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 481 transitions. Word has length 122 [2023-11-23 08:20:32,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:20:32,382 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 481 transitions. [2023-11-23 08:20:32,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.5) internal successors, (126), 36 states have internal predecessors, (126), 11 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2023-11-23 08:20:32,382 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 481 transitions. [2023-11-23 08:20:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:20:32,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:20:32,383 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-11-23 08:20:32,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 08:20:32,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:20:32,599 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:20:32,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:20:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash 719648301, now seen corresponding path program 1 times [2023-11-23 08:20:32,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:20:32,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883187560] [2023-11-23 08:20:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:20:32,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:20:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:20:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:20:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:20:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:20:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:20:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:20:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:20:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:20:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:20:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:20:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:20:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:20:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 08:20:34,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:20:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883187560] [2023-11-23 08:20:34,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883187560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:20:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734400758] [2023-11-23 08:20:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:20:34,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:20:34,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:20:34,841 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:20:34,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 08:20:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:35,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 86 conjunts are in the unsatisfiable core [2023-11-23 08:20:35,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:20:35,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:20:35,444 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 5 treesize of output 3 [2023-11-23 08:20:35,450 WARN L876 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (<= (+ |bounded_malloc_#res.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| (select |c_#valid| |bounded_malloc_#res.base|))))) is different from true [2023-11-23 08:20:35,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:20:35,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-23 08:20:35,871 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-23 08:20:35,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-23 08:20:35,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:20:35,915 INFO L349 Elim1Store]: treesize reduction 92, result has 22.7 percent of original size [2023-11-23 08:20:35,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 39 [2023-11-23 08:20:36,084 INFO L349 Elim1Store]: treesize reduction 56, result has 36.4 percent of original size [2023-11-23 08:20:36,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 92 [2023-11-23 08:20:36,136 INFO L349 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size [2023-11-23 08:20:36,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 97 [2023-11-23 08:20:36,437 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 08:20:36,471 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 08:20:36,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:20:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 97 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 08:20:36,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:20:37,247 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1488 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be16_~#x#1.base| v_ArrVal_1488) |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.offset|))) (< .cse0 (+ (* 18446744073709551616 (div .cse0 18446744073709551616)) 1)))) is different from false [2023-11-23 08:20:37,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734400758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:20:37,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:20:37,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25] total 41 [2023-11-23 08:20:37,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956712302] [2023-11-23 08:20:37,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:20:37,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-23 08:20:37,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:20:37,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-23 08:20:37,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1811, Unknown=2, NotChecked=174, Total=2162 [2023-11-23 08:20:37,253 INFO L87 Difference]: Start difference. First operand 405 states and 481 transitions. Second operand has 41 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 14 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (23), 10 states have call predecessors, (23), 12 states have call successors, (23) [2023-11-23 08:20:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:20:44,827 INFO L93 Difference]: Finished difference Result 977 states and 1167 transitions. [2023-11-23 08:20:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-23 08:20:44,827 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 14 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (23), 10 states have call predecessors, (23), 12 states have call successors, (23) Word has length 122 [2023-11-23 08:20:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:20:44,829 INFO L225 Difference]: With dead ends: 977 [2023-11-23 08:20:44,829 INFO L226 Difference]: Without dead ends: 639 [2023-11-23 08:20:44,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 173 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=937, Invalid=6901, Unknown=2, NotChecked=350, Total=8190 [2023-11-23 08:20:44,833 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 596 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 3944 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 4708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:20:44,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 539 Invalid, 4708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3944 Invalid, 0 Unknown, 408 Unchecked, 6.0s Time] [2023-11-23 08:20:44,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-23 08:20:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 524. [2023-11-23 08:20:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 394 states have (on average 1.1294416243654823) internal successors, (445), 406 states have internal predecessors, (445), 79 states have call successors, (79), 42 states have call predecessors, (79), 50 states have return successors, (93), 75 states have call predecessors, (93), 76 states have call successors, (93) [2023-11-23 08:20:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 617 transitions. [2023-11-23 08:20:44,880 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 617 transitions. Word has length 122 [2023-11-23 08:20:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:20:44,881 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 617 transitions. [2023-11-23 08:20:44,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 14 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (23), 10 states have call predecessors, (23), 12 states have call successors, (23) [2023-11-23 08:20:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 617 transitions. [2023-11-23 08:20:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:20:44,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:20:44,882 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:20:44,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 08:20:45,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 08:20:45,097 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:20:45,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:20:45,098 INFO L85 PathProgramCache]: Analyzing trace with hash -105478163, now seen corresponding path program 1 times [2023-11-23 08:20:45,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:20:45,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328829982] [2023-11-23 08:20:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:20:45,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:20:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:20:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:20:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:20:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:20:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:20:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:20:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:20:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:20:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:20:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:20:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:20:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:20:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 08:20:47,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:20:47,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328829982] [2023-11-23 08:20:47,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328829982] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:20:47,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285056103] [2023-11-23 08:20:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:20:47,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:20:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:20:47,522 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:20:47,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 08:20:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:20:47,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 08:20:47,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:20:48,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:20:48,518 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 08:20:48,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2023-11-23 08:20:48,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:20:48,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2023-11-23 08:20:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 08:20:48,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:20:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285056103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:20:48,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:20:48,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [18] total 31 [2023-11-23 08:20:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147581418] [2023-11-23 08:20:48,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:20:48,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:20:48,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:20:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:20:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:20:48,559 INFO L87 Difference]: Start difference. First operand 524 states and 617 transitions. Second operand has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:20:51,097 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 08:20:53,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:20:55,831 WARN L539 Checker$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 08:20:57,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:00,069 WARN L539 Checker$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 08:21:02,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:04,119 WARN L539 Checker$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 08:21:06,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:08,190 WARN L539 Checker$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 08:21:10,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:12,205 WARN L539 Checker$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 08:21:14,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:16,271 WARN L539 Checker$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 08:21:18,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:20,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:22,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:24,593 WARN L539 Checker$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 08:21:26,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:28,826 WARN L539 Checker$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 08:21:30,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:32,874 WARN L539 Checker$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 08:21:34,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:34,960 INFO L93 Difference]: Finished difference Result 843 states and 1009 transitions. [2023-11-23 08:21:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 08:21:34,961 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 122 [2023-11-23 08:21:34,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:34,962 INFO L225 Difference]: With dead ends: 843 [2023-11-23 08:21:34,962 INFO L226 Difference]: Without dead ends: 495 [2023-11-23 08:21:34,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=1328, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 08:21:34,963 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 145 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 36 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:34,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 553 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 707 Invalid, 22 Unknown, 0 Unchecked, 46.1s Time] [2023-11-23 08:21:34,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-11-23 08:21:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2023-11-23 08:21:35,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 371 states have (on average 1.1320754716981132) internal successors, (420), 381 states have internal predecessors, (420), 76 states have call successors, (76), 40 states have call predecessors, (76), 47 states have return successors, (89), 73 states have call predecessors, (89), 73 states have call successors, (89) [2023-11-23 08:21:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 585 transitions. [2023-11-23 08:21:35,011 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 585 transitions. Word has length 122 [2023-11-23 08:21:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:35,011 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 585 transitions. [2023-11-23 08:21:35,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.615384615384615) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:21:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 585 transitions. [2023-11-23 08:21:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 08:21:35,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:35,016 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:35,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 08:21:35,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:35,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:35,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:35,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1067468648, now seen corresponding path program 1 times [2023-11-23 08:21:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:35,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606440317] [2023-11-23 08:21:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:35,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:21:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:21:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:21:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:21:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:21:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:21:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:21:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-23 08:21:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606440317] [2023-11-23 08:21:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606440317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:21:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 08:21:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018110614] [2023-11-23 08:21:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:21:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:21:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:35,751 INFO L87 Difference]: Start difference. First operand 495 states and 585 transitions. Second operand has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:21:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:37,111 INFO L93 Difference]: Finished difference Result 530 states and 620 transitions. [2023-11-23 08:21:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:21:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 124 [2023-11-23 08:21:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:37,114 INFO L225 Difference]: With dead ends: 530 [2023-11-23 08:21:37,114 INFO L226 Difference]: Without dead ends: 528 [2023-11-23 08:21:37,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:21:37,115 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 109 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:37,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 456 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:21:37,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-11-23 08:21:37,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 505. [2023-11-23 08:21:37,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 378 states have (on average 1.126984126984127) internal successors, (426), 389 states have internal predecessors, (426), 77 states have call successors, (77), 41 states have call predecessors, (77), 49 states have return successors, (91), 74 states have call predecessors, (91), 74 states have call successors, (91) [2023-11-23 08:21:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 594 transitions. [2023-11-23 08:21:37,162 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 594 transitions. Word has length 124 [2023-11-23 08:21:37,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:37,162 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 594 transitions. [2023-11-23 08:21:37,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:21:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 594 transitions. [2023-11-23 08:21:37,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 08:21:37,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:37,164 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:37,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 08:21:37,164 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:37,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash -360887200, now seen corresponding path program 1 times [2023-11-23 08:21:37,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:37,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944097486] [2023-11-23 08:21:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:37,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:21:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:21:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:21:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:21:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:21:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:21:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:21:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:21:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:21:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:21:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:39,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:21:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 08:21:40,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:40,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944097486] [2023-11-23 08:21:40,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944097486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:40,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196528902] [2023-11-23 08:21:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:40,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:40,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:40,166 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:21:40,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 08:21:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:41,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 185 conjunts are in the unsatisfiable core [2023-11-23 08:21:41,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:41,949 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 9 treesize of output 5 [2023-11-23 08:21:41,953 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 9 treesize of output 5 [2023-11-23 08:21:41,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:21:42,366 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:21:42,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 08:21:42,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:21:42,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:21:42,592 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:21:42,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2023-11-23 08:21:42,696 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 25 treesize of output 13 [2023-11-23 08:21:42,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:21:45,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:21:45,024 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 52 treesize of output 52 [2023-11-23 08:21:45,128 INFO L349 Elim1Store]: treesize reduction 222, result has 20.7 percent of original size [2023-11-23 08:21:45,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 44 treesize of output 85 [2023-11-23 08:21:45,451 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-23 08:21:45,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 76 [2023-11-23 08:21:48,160 INFO L349 Elim1Store]: treesize reduction 200, result has 23.4 percent of original size [2023-11-23 08:21:48,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 154 treesize of output 188 [2023-11-23 08:21:48,198 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 7 treesize of output 5 [2023-11-23 08:21:48,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-23 08:21:48,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-23 08:21:48,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-23 08:21:48,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 Killed by 15