./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash df84751ae907cf8e2f81d69c2889b453b5ccdd1cae9e7b45e78c48443104a63e --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:31:15,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:31:15,333 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:31:15,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:31:15,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:31:15,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:31:15,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:31:15,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:31:15,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:31:15,374 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:31:15,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:31:15,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:31:15,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:31:15,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:31:15,377 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:31:15,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:31:15,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:31:15,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:31:15,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:31:15,378 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:31:15,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:31:15,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:31:15,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:31:15,379 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:31:15,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:31:15,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:31:15,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:31:15,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:31:15,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:31:15,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:31:15,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:31:15,381 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:31:15,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:31:15,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:31:15,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:31:15,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:31:15,382 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:31:15,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:31:15,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:31:15,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df84751ae907cf8e2f81d69c2889b453b5ccdd1cae9e7b45e78c48443104a63e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:31:15,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:31:15,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:31:15,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:31:15,625 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:31:15,626 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:31:15,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i [2023-11-23 08:31:16,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:31:17,259 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:31:17,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i [2023-11-23 08:31:17,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804fb6117/5fd6daac37ce4ede9ce627ceea30f340/FLAGd9405c184 [2023-11-23 08:31:17,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804fb6117/5fd6daac37ce4ede9ce627ceea30f340 [2023-11-23 08:31:17,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:31:17,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:31:17,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:31:17,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:31:17,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:31:17,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:17" (1/1) ... [2023-11-23 08:31:17,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b706282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:17, skipping insertion in model container [2023-11-23 08:31:17,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:17" (1/1) ... [2023-11-23 08:31:17,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:31:17,610 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4499,4512] [2023-11-23 08:31:17,618 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4559,4572] [2023-11-23 08:31:18,187 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,188 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,188 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,189 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,202 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,202 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,484 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:31:18,486 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:31:18,488 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:31:18,489 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:31:18,500 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:31:18,501 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:31:18,501 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:31:18,502 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:31:18,502 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:31:18,502 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:31:18,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:31:18,816 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:31:18,838 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4499,4512] [2023-11-23 08:31:18,838 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_read_be16_harness_negated.i[4559,4572] [2023-11-23 08:31:18,883 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,884 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,884 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,885 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,885 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,895 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,895 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,897 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,897 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:18,940 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:31:18,941 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:31:18,941 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:31:18,942 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:31:18,944 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:31:18,945 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:31:18,945 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:31:18,945 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:31:18,946 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:31:18,946 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:31:19,060 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-23 08:31:19,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:19,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:31:19,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2023-11-23 08:31:19,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:31:19,254 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,255 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,255 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,255 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,255 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,255 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,256 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,256 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,256 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,256 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,256 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,256 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,257 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,257 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,257 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,258 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,258 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,258 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:31:19,265 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:31:19,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19 WrapperNode [2023-11-23 08:31:19,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:31:19,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:31:19,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:31:19,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:31:19,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,473 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1022 [2023-11-23 08:31:19,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:31:19,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:31:19,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:31:19,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:31:19,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:31:19,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:31:19,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:31:19,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:31:19,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (1/1) ... [2023-11-23 08:31:19,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:31:19,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:19,620 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 08:31:19,635 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 08:31:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-11-23 08:31:19,675 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-11-23 08:31:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 08:31:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 08:31:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ntohs [2023-11-23 08:31:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:31:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:31:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:31:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 08:31:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 08:31:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 08:31:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:31:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 08:31:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 08:31:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:31:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:31:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:31:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh16 [2023-11-23 08:31:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh16 [2023-11-23 08:31:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:31:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:31:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:31:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:31:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:31:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:31:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:31:19,680 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:31:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 08:31:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 08:31:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 08:31:19,681 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 08:31:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:31:19,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:31:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:31:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:31:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:31:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:31:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:31:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:31:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 08:31:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:31:19,983 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:31:19,985 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:31:20,747 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:31:20,821 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:31:20,822 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 08:31:20,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:20 BoogieIcfgContainer [2023-11-23 08:31:20,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:31:20,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:31:20,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:31:20,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:31:20,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:31:17" (1/3) ... [2023-11-23 08:31:20,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2d8cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:20, skipping insertion in model container [2023-11-23 08:31:20,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:19" (2/3) ... [2023-11-23 08:31:20,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2d8cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:20, skipping insertion in model container [2023-11-23 08:31:20,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:20" (3/3) ... [2023-11-23 08:31:20,830 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be16_harness_negated.i [2023-11-23 08:31:20,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:31:20,844 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:31:20,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:31:20,885 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;@3b6a4f37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:31:20,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:31:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 08:31:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 08:31:20,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:20,899 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:20,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:20,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2146430406, now seen corresponding path program 1 times [2023-11-23 08:31:20,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:20,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002782709] [2023-11-23 08:31:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:21,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:31:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:31:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:31:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:31:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:31:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:31:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:31:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:31:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:31:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:31:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:31:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:31:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:31:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:31:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:31:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-23 08:31:22,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:22,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002782709] [2023-11-23 08:31:22,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002782709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:22,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757094638] [2023-11-23 08:31:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:22,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:22,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:22,182 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 08:31:22,184 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 08:31:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:22,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 08:31:22,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 08:31:22,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:31:22,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757094638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:31:22,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:31:22,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2023-11-23 08:31:22,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317292149] [2023-11-23 08:31:22,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:22,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:31:22,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:31:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:31:22,885 INFO L87 Difference]: Start difference. First operand has 159 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 08:31:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:23,026 INFO L93 Difference]: Finished difference Result 312 states and 477 transitions. [2023-11-23 08:31:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:31:23,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 112 [2023-11-23 08:31:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:23,036 INFO L225 Difference]: With dead ends: 312 [2023-11-23 08:31:23,036 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 08:31:23,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:31:23,042 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:23,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:31:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 08:31:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 08:31:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 98 states have internal predecessors, (129), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-23 08:31:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 224 transitions. [2023-11-23 08:31:23,082 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 224 transitions. Word has length 112 [2023-11-23 08:31:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:23,083 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 224 transitions. [2023-11-23 08:31:23,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 08:31:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 224 transitions. [2023-11-23 08:31:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 08:31:23,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:23,086 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:23,117 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 08:31:23,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 08:31:23,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:23,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1893788540, now seen corresponding path program 1 times [2023-11-23 08:31:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:23,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285721835] [2023-11-23 08:31:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:23,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:31:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:31:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:31:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:31:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:31:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:31:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:31:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:31:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:31:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:31:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:31:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:31:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:31:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:31:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:31:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-23 08:31:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285721835] [2023-11-23 08:31:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285721835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278535924] [2023-11-23 08:31:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:23,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:23,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:23,798 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 08:31:23,826 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 08:31:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:24,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:31:24,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 08:31:24,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:31:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278535924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:31:24,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:31:24,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 08:31:24,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933174021] [2023-11-23 08:31:24,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:24,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:31:24,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:31:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:31:24,319 INFO L87 Difference]: Start difference. First operand 157 states and 224 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 08:31:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:24,459 INFO L93 Difference]: Finished difference Result 294 states and 431 transitions. [2023-11-23 08:31:24,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:31:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 112 [2023-11-23 08:31:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:24,462 INFO L225 Difference]: With dead ends: 294 [2023-11-23 08:31:24,462 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 08:31:24,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:31:24,464 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 46 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:24,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 513 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:31:24,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 08:31:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 08:31:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 100 states have internal predecessors, (130), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2023-11-23 08:31:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 233 transitions. [2023-11-23 08:31:24,478 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 233 transitions. Word has length 112 [2023-11-23 08:31:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:24,478 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 233 transitions. [2023-11-23 08:31:24,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 08:31:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 233 transitions. [2023-11-23 08:31:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 08:31:24,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:24,480 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:24,517 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 08:31:24,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 08:31:24,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:24,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1928391561, now seen corresponding path program 1 times [2023-11-23 08:31:24,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:24,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760995494] [2023-11-23 08:31:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:24,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:31:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:31:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:31:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:31:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:31:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:31:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:31:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:31:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:31:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:31:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:31:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:31:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:31:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:31:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:31:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-23 08:31:25,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760995494] [2023-11-23 08:31:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760995494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138549827] [2023-11-23 08:31:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:25,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:25,274 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 08:31:25,302 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 08:31:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:25,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:31:25,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 08:31:25,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:31:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138549827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:31:25,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:31:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 08:31:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019280070] [2023-11-23 08:31:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:25,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:31:25,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:25,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:31:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:31:25,852 INFO L87 Difference]: Start difference. First operand 159 states and 233 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 08:31:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:26,110 INFO L93 Difference]: Finished difference Result 280 states and 412 transitions. [2023-11-23 08:31:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:31:26,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 114 [2023-11-23 08:31:26,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:26,112 INFO L225 Difference]: With dead ends: 280 [2023-11-23 08:31:26,112 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 08:31:26,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:31:26,114 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 45 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:26,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 871 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:31:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 08:31:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 08:31:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 100 states have internal predecessors, (130), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2023-11-23 08:31:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2023-11-23 08:31:26,123 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 114 [2023-11-23 08:31:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:26,124 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2023-11-23 08:31:26,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 08:31:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2023-11-23 08:31:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 08:31:26,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:26,126 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:26,142 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 08:31:26,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:26,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:26,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:26,342 INFO L85 PathProgramCache]: Analyzing trace with hash 488628850, now seen corresponding path program 2 times [2023-11-23 08:31:26,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:26,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075528884] [2023-11-23 08:31:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:26,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:31:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:31:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:31:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:31:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:31:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:31:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:31:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:31:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:31:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:31:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:31:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:31:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:31:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:31:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:31:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-23 08:31:26,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:26,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075528884] [2023-11-23 08:31:26,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075528884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:26,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14032191] [2023-11-23 08:31:26,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:31:26,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:26,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:26,840 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 08:31:26,864 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 08:31:27,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:31:27,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:31:27,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:31:27,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-23 08:31:27,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:31:27,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14032191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:31:27,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:31:27,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-23 08:31:27,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330787392] [2023-11-23 08:31:27,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:27,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:31:27,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:31:27,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:31:27,291 INFO L87 Difference]: Start difference. First operand 159 states and 231 transitions. Second operand has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 08:31:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:27,614 INFO L93 Difference]: Finished difference Result 167 states and 239 transitions. [2023-11-23 08:31:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:31:27,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 116 [2023-11-23 08:31:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:27,616 INFO L225 Difference]: With dead ends: 167 [2023-11-23 08:31:27,617 INFO L226 Difference]: Without dead ends: 165 [2023-11-23 08:31:27,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:31:27,619 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 5 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:27,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1229 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:31:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-23 08:31:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2023-11-23 08:31:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2023-11-23 08:31:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 236 transitions. [2023-11-23 08:31:27,642 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 236 transitions. Word has length 116 [2023-11-23 08:31:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:27,644 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 236 transitions. [2023-11-23 08:31:27,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 08:31:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 236 transitions. [2023-11-23 08:31:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 08:31:27,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:27,649 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:27,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 08:31:27,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:27,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:27,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:27,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2084933843, now seen corresponding path program 3 times [2023-11-23 08:31:27,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787386737] [2023-11-23 08:31:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:27,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:31:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:31:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:31:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:31:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:31:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:31:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:31:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:31:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:31:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:31:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:31:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:31:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:31:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:31:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:31:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-23 08:31:28,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787386737] [2023-11-23 08:31:28,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787386737] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:28,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221316967] [2023-11-23 08:31:28,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:31:28,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:28,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:28,403 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 08:31:28,421 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 08:31:28,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 08:31:28,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:31:28,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:31:28,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-23 08:31:29,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:31:29,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221316967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:31:29,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:31:29,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-23 08:31:29,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449546495] [2023-11-23 08:31:29,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:29,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:31:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:31:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:31:29,050 INFO L87 Difference]: Start difference. First operand 164 states and 236 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 08:31:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:29,373 INFO L93 Difference]: Finished difference Result 279 states and 400 transitions. [2023-11-23 08:31:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:31:29,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 118 [2023-11-23 08:31:29,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:29,375 INFO L225 Difference]: With dead ends: 279 [2023-11-23 08:31:29,375 INFO L226 Difference]: Without dead ends: 164 [2023-11-23 08:31:29,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:31:29,376 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 2 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:29,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1154 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:31:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-23 08:31:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-23 08:31:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (53), 48 states have call predecessors, (53), 48 states have call successors, (53) [2023-11-23 08:31:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 235 transitions. [2023-11-23 08:31:29,386 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 235 transitions. Word has length 118 [2023-11-23 08:31:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:29,387 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 235 transitions. [2023-11-23 08:31:29,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 08:31:29,387 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 235 transitions. [2023-11-23 08:31:29,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:31:29,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:29,388 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:29,408 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 08:31:29,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:29,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:29,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash -978341870, now seen corresponding path program 4 times [2023-11-23 08:31:29,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:29,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697755] [2023-11-23 08:31:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:31:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:31:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:31:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:31:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:31:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:31:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:31:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:31:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:31:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:31:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:31:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:31:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:31:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:31:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:31:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-23 08:31:30,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697755] [2023-11-23 08:31:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420851380] [2023-11-23 08:31:30,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:31:30,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:30,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:30,126 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 08:31:30,149 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 08:31:30,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:31:30,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:31:30,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:31:30,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:31:30,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:31:30,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420851380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:31:30,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:31:30,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-23 08:31:30,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641633988] [2023-11-23 08:31:30,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:31:30,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:31:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:31:30,757 INFO L87 Difference]: Start difference. First operand 164 states and 235 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 08:31:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:31,118 INFO L93 Difference]: Finished difference Result 284 states and 407 transitions. [2023-11-23 08:31:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:31:31,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 120 [2023-11-23 08:31:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:31,125 INFO L225 Difference]: With dead ends: 284 [2023-11-23 08:31:31,125 INFO L226 Difference]: Without dead ends: 164 [2023-11-23 08:31:31,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:31:31,131 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 137 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:31,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 982 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:31:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-23 08:31:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-23 08:31:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 08:31:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 232 transitions. [2023-11-23 08:31:31,156 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 232 transitions. Word has length 120 [2023-11-23 08:31:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:31,156 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 232 transitions. [2023-11-23 08:31:31,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 08:31:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 232 transitions. [2023-11-23 08:31:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:31:31,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:31,158 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:31,174 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 08:31:31,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:31,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:31,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1024815245, now seen corresponding path program 1 times [2023-11-23 08:31:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:31,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92513112] [2023-11-23 08:31:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:31,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:31:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:31:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:31:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:31:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:31:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:31:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:31:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:31:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:31:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:31:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:31:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:31:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:31:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:31:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:31:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-23 08:31:31,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:31,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92513112] [2023-11-23 08:31:31,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92513112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:31:31,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:31:31,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:31:31,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115335412] [2023-11-23 08:31:31,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:31,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:31:31,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:31:31,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:31:31,957 INFO L87 Difference]: Start difference. First operand 164 states and 232 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 08:31:32,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:32,737 INFO L93 Difference]: Finished difference Result 301 states and 429 transitions. [2023-11-23 08:31:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:31:32,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 122 [2023-11-23 08:31:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:32,739 INFO L225 Difference]: With dead ends: 301 [2023-11-23 08:31:32,739 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 08:31:32,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:31:32,740 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 126 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:32,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 485 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:31:32,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 08:31:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2023-11-23 08:31:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 08:31:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 237 transitions. [2023-11-23 08:31:32,755 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 237 transitions. Word has length 122 [2023-11-23 08:31:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:32,755 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 237 transitions. [2023-11-23 08:31:32,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 08:31:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 237 transitions. [2023-11-23 08:31:32,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 08:31:32,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:32,757 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:32,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 08:31:32,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:32,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:32,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1873435210, now seen corresponding path program 1 times [2023-11-23 08:31:32,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:32,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395222289] [2023-11-23 08:31:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:32,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:31:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:31:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:31:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:31:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:31:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:31:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:31:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:31:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:31:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:31:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:31:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:31:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:31:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 08:31:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:31:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-23 08:31:34,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:34,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395222289] [2023-11-23 08:31:34,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395222289] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:34,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702786354] [2023-11-23 08:31:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:34,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:34,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:34,073 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 08:31:34,085 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 08:31:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:34,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:31:34,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 08:31:34,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:31:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-23 08:31:34,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702786354] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:34,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:31:34,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 5] total 17 [2023-11-23 08:31:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637966637] [2023-11-23 08:31:34,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:34,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:31:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:31:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:31:34,705 INFO L87 Difference]: Start difference. First operand 167 states and 237 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 08:31:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:34,973 INFO L93 Difference]: Finished difference Result 306 states and 440 transitions. [2023-11-23 08:31:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:31:34,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 123 [2023-11-23 08:31:34,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:34,974 INFO L225 Difference]: With dead ends: 306 [2023-11-23 08:31:34,974 INFO L226 Difference]: Without dead ends: 172 [2023-11-23 08:31:34,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:31:34,976 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 4 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:34,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 617 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:31:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-23 08:31:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2023-11-23 08:31:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 106 states have (on average 1.320754716981132) internal successors, (140), 108 states have internal predecessors, (140), 49 states have call successors, (49), 13 states have call predecessors, (49), 14 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 08:31:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 240 transitions. [2023-11-23 08:31:34,987 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 240 transitions. Word has length 123 [2023-11-23 08:31:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:34,988 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 240 transitions. [2023-11-23 08:31:34,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 08:31:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 240 transitions. [2023-11-23 08:31:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 08:31:34,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:34,990 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:35,005 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 08:31:35,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:35,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:35,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:35,206 INFO L85 PathProgramCache]: Analyzing trace with hash -164781073, now seen corresponding path program 1 times [2023-11-23 08:31:35,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:35,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263812108] [2023-11-23 08:31:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:35,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:31:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:31:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:31:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:31:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:31:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:31:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:31:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:31:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:31:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:31:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:31:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:31:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:31:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:31:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:31:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:31:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:31:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-23 08:31:36,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:36,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263812108] [2023-11-23 08:31:36,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263812108] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:36,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937493441] [2023-11-23 08:31:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:36,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:36,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:36,512 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 08:31:36,533 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 08:31:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:37,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 2897 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 08:31:37,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 08:31:37,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:31:37,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937493441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:31:37,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:31:37,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 15 [2023-11-23 08:31:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338115755] [2023-11-23 08:31:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:31:37,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:31:37,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:31:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:31:37,118 INFO L87 Difference]: Start difference. First operand 170 states and 240 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 08:31:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:38,026 INFO L93 Difference]: Finished difference Result 329 states and 468 transitions. [2023-11-23 08:31:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:31:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 124 [2023-11-23 08:31:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:38,028 INFO L225 Difference]: With dead ends: 329 [2023-11-23 08:31:38,028 INFO L226 Difference]: Without dead ends: 172 [2023-11-23 08:31:38,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:31:38,029 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 5 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:38,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1787 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:31:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-23 08:31:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2023-11-23 08:31:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 106 states have (on average 1.3113207547169812) internal successors, (139), 108 states have internal predecessors, (139), 49 states have call successors, (49), 13 states have call predecessors, (49), 14 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 08:31:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 239 transitions. [2023-11-23 08:31:38,043 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 239 transitions. Word has length 124 [2023-11-23 08:31:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:38,044 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 239 transitions. [2023-11-23 08:31:38,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 08:31:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 239 transitions. [2023-11-23 08:31:38,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 08:31:38,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:38,046 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:38,079 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 08:31:38,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 08:31:38,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:38,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash -391417363, now seen corresponding path program 1 times [2023-11-23 08:31:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:38,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781498321] [2023-11-23 08:31:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:31:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:31:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:31:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:31:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:31:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:31:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:31:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:31:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:31:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:31:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:31:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:31:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:31:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:31:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:31:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:31:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:31:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 08:31:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 08:31:38,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781498321] [2023-11-23 08:31:38,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781498321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290103110] [2023-11-23 08:31:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:38,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:38,979 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 08:31:38,993 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 08:31:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:39,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 08:31:39,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 124 proven. 1 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 08:31:39,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:31:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 08:31:39,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290103110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:31:39,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:31:39,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-11-23 08:31:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912414423] [2023-11-23 08:31:39,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:31:39,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:31:39,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:31:39,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:31:39,691 INFO L87 Difference]: Start difference. First operand 170 states and 239 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-23 08:31:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:31:40,944 INFO L93 Difference]: Finished difference Result 315 states and 449 transitions. [2023-11-23 08:31:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:31:40,944 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 134 [2023-11-23 08:31:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:31:40,946 INFO L225 Difference]: With dead ends: 315 [2023-11-23 08:31:40,946 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 08:31:40,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:31:40,947 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 134 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:31:40,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 712 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:31:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 08:31:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2023-11-23 08:31:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 110 states have (on average 1.3272727272727274) internal successors, (146), 112 states have internal predecessors, (146), 49 states have call successors, (49), 13 states have call predecessors, (49), 14 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 08:31:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 246 transitions. [2023-11-23 08:31:40,959 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 246 transitions. Word has length 134 [2023-11-23 08:31:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:31:40,959 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 246 transitions. [2023-11-23 08:31:40,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-23 08:31:40,960 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 246 transitions. [2023-11-23 08:31:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 08:31:40,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:31:40,961 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:31:40,981 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 08:31:41,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 08:31:41,173 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:31:41,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:31:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash -680450918, now seen corresponding path program 2 times [2023-11-23 08:31:41,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:31:41,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210840231] [2023-11-23 08:31:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:31:41,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:31:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:31:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:31:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:31:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:31:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:31:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:31:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:31:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:31:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:31:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:31:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:31:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:31:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:31:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:31:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:31:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:31:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:31:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:31:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:31:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:31:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-23 08:31:42,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:31:42,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210840231] [2023-11-23 08:31:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210840231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:42,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035789177] [2023-11-23 08:31:42,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:31:42,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:31:42,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:31:42,545 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 08:31:42,548 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 08:31:43,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:31:43,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:31:43,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 97 conjunts are in the unsatisfiable core [2023-11-23 08:31:43,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:31:43,925 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 08:31:43,950 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 08:31:43,979 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 08:31:44,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:31:44,009 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 08:31:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:31:44,629 INFO L349 Elim1Store]: treesize reduction 92, result has 22.7 percent of original size [2023-11-23 08:31:44,630 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 08:31:44,663 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-23 08:31:44,663 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 08:31:44,690 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-23 08:31:44,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2023-11-23 08:31:44,774 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 08:31:44,859 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 08:31:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 117 proven. 90 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 08:31:45,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:31:47,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035789177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:31:47,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:31:47,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 23] total 33 [2023-11-23 08:31:47,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876439228] [2023-11-23 08:31:47,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:31:47,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-23 08:31:47,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:31:47,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-23 08:31:47,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1429, Unknown=16, NotChecked=76, Total=1640 [2023-11-23 08:31:47,902 INFO L87 Difference]: Start difference. First operand 174 states and 246 transitions. Second operand has 33 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 14 states have call successors, (45), 11 states have call predecessors, (45), 10 states have return successors, (42), 11 states have call predecessors, (42), 14 states have call successors, (42) [2023-11-23 08:31:52,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:55,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:31:58,119 WARN L539 Checker$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 08:32:02,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:04,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:06,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:08,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:11,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:13,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:15,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:17,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:19,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:21,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:24,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:26,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:28,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:30,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:32,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:34,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:36,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:39,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:41,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:43,137 WARN L539 Checker$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 08:32:45,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:47,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:49,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:51,352 WARN L539 Checker$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 08:32:55,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:57,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:32:59,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:33:01,563 WARN L539 Checker$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 08:33:03,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:33:05,750 WARN L539 Checker$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 08:33:06,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:33:06,412 INFO L93 Difference]: Finished difference Result 443 states and 630 transitions. [2023-11-23 08:33:06,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-23 08:33:06,413 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 14 states have call successors, (45), 11 states have call predecessors, (45), 10 states have return successors, (42), 11 states have call predecessors, (42), 14 states have call successors, (42) Word has length 135 [2023-11-23 08:33:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:33:06,415 INFO L225 Difference]: With dead ends: 443 [2023-11-23 08:33:06,416 INFO L226 Difference]: Without dead ends: 297 [2023-11-23 08:33:06,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=747, Invalid=5881, Unknown=18, NotChecked=160, Total=6806 [2023-11-23 08:33:06,418 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 732 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 3636 mSolverCounterSat, 356 mSolverCounterUnsat, 67 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3636 IncrementalHoareTripleChecker+Invalid, 67 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 72.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:33:06,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1666 Invalid, 4452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3636 Invalid, 67 Unknown, 393 Unchecked, 72.9s Time] [2023-11-23 08:33:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-23 08:33:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2023-11-23 08:33:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 167 states have (on average 1.281437125748503) internal successors, (214), 169 states have internal predecessors, (214), 64 states have call successors, (64), 22 states have call predecessors, (64), 22 states have return successors, (71), 62 states have call predecessors, (71), 63 states have call successors, (71) [2023-11-23 08:33:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 349 transitions. [2023-11-23 08:33:06,436 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 349 transitions. Word has length 135 [2023-11-23 08:33:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:33:06,437 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 349 transitions. [2023-11-23 08:33:06,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 14 states have call successors, (45), 11 states have call predecessors, (45), 10 states have return successors, (42), 11 states have call predecessors, (42), 14 states have call successors, (42) [2023-11-23 08:33:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 349 transitions. [2023-11-23 08:33:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 08:33:06,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:06,438 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:33:06,483 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 08:33:06,653 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,SelfDestructingSolverStorable10 [2023-11-23 08:33:06,654 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:33:06,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:33:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash 351250525, now seen corresponding path program 1 times [2023-11-23 08:33:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:33:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600077050] [2023-11-23 08:33:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:33:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:33:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:33:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:33:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:33:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:33:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:33:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:33:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:33:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:33:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:33:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:33:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:33:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:33:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:33:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:33:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:33:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:33:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:33:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:33:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-23 08:33:08,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:33:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600077050] [2023-11-23 08:33:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600077050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:33:08,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:33:08,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:33:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601692131] [2023-11-23 08:33:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:33:08,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:33:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:33:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:33:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:33:08,127 INFO L87 Difference]: Start difference. First operand 254 states and 349 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:33:09,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:33:09,540 INFO L93 Difference]: Finished difference Result 456 states and 633 transitions. [2023-11-23 08:33:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:33:09,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 141 [2023-11-23 08:33:09,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:33:09,542 INFO L225 Difference]: With dead ends: 456 [2023-11-23 08:33:09,542 INFO L226 Difference]: Without dead ends: 268 [2023-11-23 08:33:09,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:33:09,543 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 120 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:33:09,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 597 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:33:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-23 08:33:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2023-11-23 08:33:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 172 states have (on average 1.2732558139534884) internal successors, (219), 174 states have internal predecessors, (219), 69 states have call successors, (69), 22 states have call predecessors, (69), 22 states have return successors, (77), 67 states have call predecessors, (77), 68 states have call successors, (77) [2023-11-23 08:33:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 365 transitions. [2023-11-23 08:33:09,560 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 365 transitions. Word has length 141 [2023-11-23 08:33:09,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:33:09,560 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 365 transitions. [2023-11-23 08:33:09,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 08:33:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 365 transitions. [2023-11-23 08:33:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-23 08:33:09,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:09,562 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:33:09,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 08:33:09,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:33:09,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:33:09,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1448672814, now seen corresponding path program 1 times [2023-11-23 08:33:09,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:33:09,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728585315] [2023-11-23 08:33:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:09,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:33:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:33:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:33:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:33:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:33:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:33:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:33:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:33:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:33:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:33:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:33:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:33:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:33:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:33:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:33:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:33:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:33:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:33:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 08:33:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-23 08:33:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:33:10,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728585315] [2023-11-23 08:33:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728585315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:33:10,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221537515] [2023-11-23 08:33:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:10,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:33:10,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:33:10,558 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 08:33:10,559 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 08:33:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:11,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:33:11,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:33:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-11-23 08:33:11,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:33:11,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221537515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:33:11,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:33:11,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 13 [2023-11-23 08:33:11,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927011078] [2023-11-23 08:33:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:33:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:33:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:33:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:33:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:33:11,263 INFO L87 Difference]: Start difference. First operand 264 states and 365 transitions. Second operand has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 08:33:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:33:11,730 INFO L93 Difference]: Finished difference Result 421 states and 588 transitions. [2023-11-23 08:33:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:33:11,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 147 [2023-11-23 08:33:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:33:11,734 INFO L225 Difference]: With dead ends: 421 [2023-11-23 08:33:11,735 INFO L226 Difference]: Without dead ends: 276 [2023-11-23 08:33:11,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:33:11,739 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 13 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:33:11,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1558 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:33:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-23 08:33:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2023-11-23 08:33:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 178 states have (on average 1.2584269662921348) internal successors, (224), 182 states have internal predecessors, (224), 69 states have call successors, (69), 22 states have call predecessors, (69), 24 states have return successors, (85), 67 states have call predecessors, (85), 68 states have call successors, (85) [2023-11-23 08:33:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 378 transitions. [2023-11-23 08:33:11,764 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 378 transitions. Word has length 147 [2023-11-23 08:33:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:33:11,764 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 378 transitions. [2023-11-23 08:33:11,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 08:33:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 378 transitions. [2023-11-23 08:33:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-23 08:33:11,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:11,766 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 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, 1, 1, 1, 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 08:33:11,801 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 08:33:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:33:11,985 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:33:11,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:33:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash 993395479, now seen corresponding path program 1 times [2023-11-23 08:33:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:33:11,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180696264] [2023-11-23 08:33:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:33:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:33:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:33:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:33:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:33:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:33:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:33:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:33:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:33:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:33:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:33:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:33:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:33:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:33:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:33:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:33:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:33:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:33:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:33:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-23 08:33:12,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:33:12,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180696264] [2023-11-23 08:33:12,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180696264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:33:12,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714889721] [2023-11-23 08:33:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:12,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:33:12,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:33:12,973 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 08:33:13,028 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 08:33:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:13,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 147 conjunts are in the unsatisfiable core [2023-11-23 08:33:13,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:33:13,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 08:33:13,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 08:33:16,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:33:16,657 INFO L349 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2023-11-23 08:33:16,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 120 [2023-11-23 08:33:16,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:33:16,684 INFO L349 Elim1Store]: treesize reduction 62, result has 28.7 percent of original size [2023-11-23 08:33:16,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 85 [2023-11-23 08:33:16,749 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-23 08:33:16,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 34 [2023-11-23 08:33:16,761 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 08:33:16,823 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-23 08:33:16,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 34 [2023-11-23 08:33:16,829 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 08:33:16,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:33:16,837 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 17 treesize of output 11 [2023-11-23 08:33:17,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:33:17,058 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 08:33:17,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:33:17,065 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 08:33:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 115 proven. 4 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 08:33:18,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:33:18,618 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|))) (and (forall ((v_ArrVal_3088 (Array Int Int))) (or (not (= v_ArrVal_3088 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.offset| (select v_ArrVal_3088 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.offset|)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_3088) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) .cse0) 0))) (forall ((v_ArrVal_3087 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_3087) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) .cse0) 0) (not (= (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.offset| (select v_ArrVal_3087 |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.offset|)) v_ArrVal_3087)))))) is different from false [2023-11-23 08:33:18,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714889721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:33:18,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:33:18,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22] total 31 [2023-11-23 08:33:18,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142432] [2023-11-23 08:33:18,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:33:18,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 08:33:18,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:33:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 08:33:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1362, Unknown=2, NotChecked=74, Total=1560 [2023-11-23 08:33:18,634 INFO L87 Difference]: Start difference. First operand 272 states and 378 transitions. Second operand has 31 states, 28 states have (on average 4.035714285714286) internal successors, (113), 26 states have internal predecessors, (113), 10 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) [2023-11-23 08:33:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:33:29,484 INFO L93 Difference]: Finished difference Result 736 states and 1019 transitions. [2023-11-23 08:33:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-23 08:33:29,485 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.035714285714286) internal successors, (113), 26 states have internal predecessors, (113), 10 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) Word has length 149 [2023-11-23 08:33:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:33:29,488 INFO L225 Difference]: With dead ends: 736 [2023-11-23 08:33:29,488 INFO L226 Difference]: Without dead ends: 498 [2023-11-23 08:33:29,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 223 SyntacticMatches, 25 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=756, Invalid=5888, Unknown=2, NotChecked=160, Total=6806 [2023-11-23 08:33:29,491 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 543 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 5071 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 5332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 5071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:33:29,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 3002 Invalid, 5332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 5071 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-23 08:33:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-11-23 08:33:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 438. [2023-11-23 08:33:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 289 states have (on average 1.259515570934256) internal successors, (364), 299 states have internal predecessors, (364), 105 states have call successors, (105), 36 states have call predecessors, (105), 43 states have return successors, (127), 102 states have call predecessors, (127), 103 states have call successors, (127) [2023-11-23 08:33:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 596 transitions. [2023-11-23 08:33:29,521 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 596 transitions. Word has length 149 [2023-11-23 08:33:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:33:29,523 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 596 transitions. [2023-11-23 08:33:29,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.035714285714286) internal successors, (113), 26 states have internal predecessors, (113), 10 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) [2023-11-23 08:33:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 596 transitions. [2023-11-23 08:33:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 08:33:29,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:33:29,525 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:33:29,544 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 08:33:29,742 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,SelfDestructingSolverStorable13 [2023-11-23 08:33:29,742 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:33:29,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:33:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1311683457, now seen corresponding path program 1 times [2023-11-23 08:33:29,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:33:29,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756739121] [2023-11-23 08:33:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:29,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:33:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:33:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:33:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 08:33:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:33:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:33:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:33:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:33:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:33:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:33:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:33:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:33:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:33:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:33:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:33:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:33:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:33:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:33:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:33:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 08:33:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:33:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:33:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 19 proven. 38 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-23 08:33:35,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:33:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756739121] [2023-11-23 08:33:35,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756739121] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:33:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393607545] [2023-11-23 08:33:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:33:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:33:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:33:35,837 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 08:33:35,838 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 08:33:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:33:36,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 3137 conjuncts, 103 conjunts are in the unsatisfiable core [2023-11-23 08:33:36,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:33:36,618 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 08:33:36,653 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 08:33:36,665 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 08:33:36,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:33:36,680 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 08:33:36,784 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 08:33:36,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:33:36,795 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 08:33:37,334 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2023-11-23 08:33:37,334 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 6 case distinctions, treesize of input 31 treesize of output 32 [2023-11-23 08:33:37,401 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 08:33:37,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 08:33:37,752 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-23 08:33:37,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-23 08:33:37,809 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 08:33:41,943 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 08:33:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 207 proven. 70 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 08:33:58,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:33:59,022 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3593 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_3593) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2023-11-23 08:33:59,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393607545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:33:59,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:33:59,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 20] total 46 [2023-11-23 08:33:59,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745043619] [2023-11-23 08:33:59,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:33:59,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-23 08:33:59,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:33:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-23 08:33:59,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2208, Unknown=4, NotChecked=190, Total=2550 [2023-11-23 08:33:59,028 INFO L87 Difference]: Start difference. First operand 438 states and 596 transitions. Second operand has 46 states, 40 states have (on average 2.825) internal successors, (113), 41 states have internal predecessors, (113), 17 states have call successors, (47), 11 states have call predecessors, (47), 14 states have return successors, (44), 16 states have call predecessors, (44), 17 states have call successors, (44) [2023-11-23 08:34:04,594 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 08:34:12,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:17,018 WARN L539 Checker$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 08:34:19,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:21,915 WARN L539 Checker$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 08:34:25,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:29,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:32,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:34,043 WARN L539 Checker$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 08:34:36,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:38,100 WARN L539 Checker$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 08:34:41,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:44,752 WARN L539 Checker$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 08:34:49,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:53,124 WARN L539 Checker$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 08:34:55,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:57,333 WARN L539 Checker$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 08:34:59,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:01,467 WARN L539 Checker$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 08:35:05,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:07,415 WARN L539 Checker$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 08:35:09,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:11,632 WARN L539 Checker$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 08:35:13,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:18,045 WARN L539 Checker$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 08:35:20,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:22,059 WARN L539 Checker$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 08:35:24,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:26,306 WARN L539 Checker$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 08:35:27,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:27,305 INFO L93 Difference]: Finished difference Result 696 states and 942 transitions. [2023-11-23 08:35:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-23 08:35:27,305 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 2.825) internal successors, (113), 41 states have internal predecessors, (113), 17 states have call successors, (47), 11 states have call predecessors, (47), 14 states have return successors, (44), 16 states have call predecessors, (44), 17 states have call successors, (44) Word has length 151 [2023-11-23 08:35:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:27,308 INFO L225 Difference]: With dead ends: 696 [2023-11-23 08:35:27,308 INFO L226 Difference]: Without dead ends: 519 [2023-11-23 08:35:27,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 233 SyntacticMatches, 21 SemanticMatches, 95 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=896, Invalid=8031, Unknown=11, NotChecked=374, Total=9312 [2023-11-23 08:35:27,310 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 593 mSDsluCounter, 3082 mSDsCounter, 0 mSdLazyCounter, 6703 mSolverCounterSat, 289 mSolverCounterUnsat, 77 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 7436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 6703 IncrementalHoareTripleChecker+Invalid, 77 IncrementalHoareTripleChecker+Unknown, 367 IncrementalHoareTripleChecker+Unchecked, 75.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:27,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 3243 Invalid, 7436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 6703 Invalid, 77 Unknown, 367 Unchecked, 75.4s Time] [2023-11-23 08:35:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-11-23 08:35:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 445. [2023-11-23 08:35:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 296 states have (on average 1.2567567567567568) internal successors, (372), 308 states have internal predecessors, (372), 101 states have call successors, (101), 39 states have call predecessors, (101), 47 states have return successors, (115), 97 states have call predecessors, (115), 99 states have call successors, (115) [2023-11-23 08:35:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 588 transitions. [2023-11-23 08:35:27,345 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 588 transitions. Word has length 151 [2023-11-23 08:35:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:27,345 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 588 transitions. [2023-11-23 08:35:27,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 2.825) internal successors, (113), 41 states have internal predecessors, (113), 17 states have call successors, (47), 11 states have call predecessors, (47), 14 states have return successors, (44), 16 states have call predecessors, (44), 17 states have call successors, (44) [2023-11-23 08:35:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 588 transitions. [2023-11-23 08:35:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 08:35:27,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:27,347 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:27,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 08:35:27,560 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,SelfDestructingSolverStorable14 [2023-11-23 08:35:27,560 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:27,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1828371150, now seen corresponding path program 1 times [2023-11-23 08:35:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:27,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505143165] [2023-11-23 08:35:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:27,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:35:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:35:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:35:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:35:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:35:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:35:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:35:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:35:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:35:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:35:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:35:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:35:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:35:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:35:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:35:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:35:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:35:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:35:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 08:35:27,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505143165] [2023-11-23 08:35:27,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505143165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761819220] [2023-11-23 08:35:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:27,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:27,868 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 08:35:27,869 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 08:35:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:28,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:35:28,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 08:35:28,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:35:28,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761819220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:28,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:35:28,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 08:35:28,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478852166] [2023-11-23 08:35:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:28,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:35:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:35:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:35:28,601 INFO L87 Difference]: Start difference. First operand 445 states and 588 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:35:28,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:28,855 INFO L93 Difference]: Finished difference Result 783 states and 1036 transitions. [2023-11-23 08:35:28,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:35:28,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 151 [2023-11-23 08:35:28,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:28,857 INFO L225 Difference]: With dead ends: 783 [2023-11-23 08:35:28,857 INFO L226 Difference]: Without dead ends: 337 [2023-11-23 08:35:28,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:35:28,859 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 6 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:28,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 622 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:35:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-23 08:35:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 310. [2023-11-23 08:35:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 211 states have (on average 1.2369668246445498) internal successors, (261), 219 states have internal predecessors, (261), 66 states have call successors, (66), 28 states have call predecessors, (66), 32 states have return successors, (72), 62 states have call predecessors, (72), 65 states have call successors, (72) [2023-11-23 08:35:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 399 transitions. [2023-11-23 08:35:28,917 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 399 transitions. Word has length 151 [2023-11-23 08:35:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:28,918 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 399 transitions. [2023-11-23 08:35:28,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:35:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 399 transitions. [2023-11-23 08:35:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-23 08:35:28,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:28,919 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:28,950 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 08:35:29,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:29,151 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:29,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1426342710, now seen corresponding path program 1 times [2023-11-23 08:35:29,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:29,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729697161] [2023-11-23 08:35:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:29,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:35:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:35:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 08:35:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:35:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:35:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:35:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:35:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:35:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:35:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:35:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:35:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:35:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:35:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:35:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:35:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 08:35:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 08:35:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 08:35:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 08:35:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-23 08:35:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-23 08:35:30,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:30,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729697161] [2023-11-23 08:35:30,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729697161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:30,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684401025] [2023-11-23 08:35:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:30,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:30,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:30,197 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 08:35:30,198 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 08:35:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:30,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 3169 conjuncts, 131 conjunts are in the unsatisfiable core [2023-11-23 08:35:30,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:30,980 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 08:35:31,011 WARN L876 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2023-11-23 08:35:31,026 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 08:35:31,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-23 08:35:31,144 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:35:31,145 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 08:35:31,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:35:32,216 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:35:32,216 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 25 treesize of output 25 [2023-11-23 08:35:32,243 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 30 treesize of output 23 [2023-11-23 08:35:34,351 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 30 treesize of output 23 Killed by 15