./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:34:42,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:34:42,177 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:34:42,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:34:42,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:34:42,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:34:42,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:34:42,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:34:42,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:34:42,211 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:34:42,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:34:42,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:34:42,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:34:42,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:34:42,214 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:34:42,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:34:42,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:34:42,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:34:42,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:34:42,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:34:42,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:34:42,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:34:42,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:34:42,215 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:34:42,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:34:42,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:34:42,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:34:42,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:34:42,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:34:42,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:34:42,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:34:42,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:34:42,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:34:42,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:34:42,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:34:42,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:34:42,218 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:34:42,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:34:42,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:34:42,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:34:42,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:34:42,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:34:42,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:34:42,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:34:42,441 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:34:42,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2023-11-23 08:34:43,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:34:43,810 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:34:43,810 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2023-11-23 08:34:43,840 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d90ce230/50549910c7654e46b09fe514d5dfd2eb/FLAGc35a4a3c3 [2023-11-23 08:34:43,855 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d90ce230/50549910c7654e46b09fe514d5dfd2eb [2023-11-23 08:34:43,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:34:43,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:34:43,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:34:43,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:34:43,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:34:43,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:43" (1/1) ... [2023-11-23 08:34:43,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3fa32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:43, skipping insertion in model container [2023-11-23 08:34:43,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:43" (1/1) ... [2023-11-23 08:34:43,946 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:34:44,161 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2023-11-23 08:34:44,169 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_right_trim_pred_harness.i[4565,4578] [2023-11-23 08:34:44,771 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:44,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:44,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:44,776 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:44,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:44,786 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:44,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:44,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:44,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,040 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:34:45,042 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:34:45,042 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:34:45,044 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:34:45,047 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:34:45,047 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:34:45,047 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:34:45,048 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:34:45,049 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:34:45,050 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:34:45,218 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,218 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:34:45,293 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:34:45,302 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_right_trim_pred_harness.i[4505,4518] [2023-11-23 08:34:45,302 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_right_trim_pred_harness.i[4565,4578] [2023-11-23 08:34:45,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,365 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,366 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,366 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,366 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,397 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:34:45,398 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:34:45,398 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:34:45,399 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:34:45,399 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:34:45,400 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:34:45,401 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:34:45,401 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:34:45,402 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:34:45,402 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:34:45,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2023-11-23 08:34:45,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:34:45,489 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2023-11-23 08:34:45,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:34:45,635 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,635 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,635 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,635 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,635 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,635 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,636 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,636 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,636 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,636 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,636 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,636 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,636 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,636 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,637 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,637 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,637 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,637 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:34:45,642 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:34:45,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45 WrapperNode [2023-11-23 08:34:45,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:34:45,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:34:45,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:34:45,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:34:45,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,763 INFO L138 Inliner]: procedures = 689, calls = 2623, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 799 [2023-11-23 08:34:45,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:34:45,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:34:45,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:34:45,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:34:45,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,786 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:34:45,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:34:45,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:34:45,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:34:45,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (1/1) ... [2023-11-23 08:34:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:34:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:34:45,885 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 08:34:45,891 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 08:34:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 08:34:45,925 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 08:34:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:34:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:34:45,926 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:34:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:34:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:34:45,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:34:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:34:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:34:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:34:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:34:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:34:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:34:45,928 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:34:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:34:45,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:34:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:34:45,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:34:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:34:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:34:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:34:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2023-11-23 08:34:45,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2023-11-23 08:34:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:34:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_right_trim_pred [2023-11-23 08:34:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_right_trim_pred [2023-11-23 08:34:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:34:46,197 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:34:46,208 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:34:46,831 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:34:47,022 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:34:47,022 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:34:47,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:47 BoogieIcfgContainer [2023-11-23 08:34:47,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:34:47,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:34:47,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:34:47,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:34:47,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:43" (1/3) ... [2023-11-23 08:34:47,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb40ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:47, skipping insertion in model container [2023-11-23 08:34:47,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:45" (2/3) ... [2023-11-23 08:34:47,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb40ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:47, skipping insertion in model container [2023-11-23 08:34:47,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:47" (3/3) ... [2023-11-23 08:34:47,032 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_right_trim_pred_harness.i [2023-11-23 08:34:47,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:34:47,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:34:47,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:34:47,099 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;@22538fc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:34:47,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:34:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 50 states have (on average 1.3) internal successors, (65), 51 states have internal predecessors, (65), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-23 08:34:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 08:34:47,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:34:47,112 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:34:47,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:34:47,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:34:47,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1095827145, now seen corresponding path program 1 times [2023-11-23 08:34:47,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:34:47,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146644609] [2023-11-23 08:34:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:47,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:34:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:34:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:34:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:34:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:34:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:34:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:34:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:34:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 08:34:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:34:47,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146644609] [2023-11-23 08:34:47,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146644609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:34:47,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:34:47,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 08:34:47,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101868745] [2023-11-23 08:34:47,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:34:47,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:34:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:34:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:34:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:34:47,693 INFO L87 Difference]: Start difference. First operand has 82 states, 50 states have (on average 1.3) internal successors, (65), 51 states have internal predecessors, (65), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 08:34:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:34:47,812 INFO L93 Difference]: Finished difference Result 162 states and 229 transitions. [2023-11-23 08:34:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:34:47,815 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-11-23 08:34:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:34:47,820 INFO L225 Difference]: With dead ends: 162 [2023-11-23 08:34:47,820 INFO L226 Difference]: Without dead ends: 76 [2023-11-23 08:34:47,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:34:47,825 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:34:47,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:34:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-23 08:34:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-23 08:34:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 47 states have internal predecessors, (56), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 08:34:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2023-11-23 08:34:47,860 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 54 [2023-11-23 08:34:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:34:47,860 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2023-11-23 08:34:47,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 08:34:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2023-11-23 08:34:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 08:34:47,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:34:47,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:34:47,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:34:47,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:34:47,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:34:47,864 INFO L85 PathProgramCache]: Analyzing trace with hash -783049406, now seen corresponding path program 1 times [2023-11-23 08:34:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:34:47,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790035502] [2023-11-23 08:34:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:47,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:34:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:34:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:34:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:34:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:34:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:34:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:34:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:34:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 08:34:48,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:34:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790035502] [2023-11-23 08:34:48,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790035502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:34:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471446219] [2023-11-23 08:34:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:48,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:48,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:34:48,461 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 08:34:48,464 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 08:34:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:48,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:34:48,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:34:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 08:34:48,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:34:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471446219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:34:48,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:34:48,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-23 08:34:48,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234828923] [2023-11-23 08:34:48,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:34:48,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:34:48,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:34:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:34:49,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:34:49,000 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 08:34:49,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:34:49,457 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2023-11-23 08:34:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:34:49,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-23 08:34:49,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:34:49,461 INFO L225 Difference]: With dead ends: 139 [2023-11-23 08:34:49,461 INFO L226 Difference]: Without dead ends: 78 [2023-11-23 08:34:49,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:34:49,466 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 23 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:34:49,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 276 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:34:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-23 08:34:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-23 08:34:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2023-11-23 08:34:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2023-11-23 08:34:49,487 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 56 [2023-11-23 08:34:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:34:49,488 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2023-11-23 08:34:49,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 08:34:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2023-11-23 08:34:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 08:34:49,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:34:49,494 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:34:49,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 08:34:49,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:49,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:34:49,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:34:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1869969191, now seen corresponding path program 1 times [2023-11-23 08:34:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:34:49,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812426889] [2023-11-23 08:34:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:34:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:34:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:34:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:34:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:34:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 08:34:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:34:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:34:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 08:34:50,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:34:50,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812426889] [2023-11-23 08:34:50,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812426889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:34:50,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20693555] [2023-11-23 08:34:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:50,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:50,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:34:50,117 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 08:34:50,118 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 08:34:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:50,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:34:50,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:34:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 08:34:50,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:34:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20693555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:34:50,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:34:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-23 08:34:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749545283] [2023-11-23 08:34:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:34:50,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:34:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:34:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:34:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:34:50,585 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 08:34:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:34:50,994 INFO L93 Difference]: Finished difference Result 132 states and 173 transitions. [2023-11-23 08:34:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:34:50,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 58 [2023-11-23 08:34:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:34:50,995 INFO L225 Difference]: With dead ends: 132 [2023-11-23 08:34:50,995 INFO L226 Difference]: Without dead ends: 78 [2023-11-23 08:34:50,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:34:50,996 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 41 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:34:50,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 400 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:34:50,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-23 08:34:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-23 08:34:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 20 states have call successors, (22) [2023-11-23 08:34:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2023-11-23 08:34:51,002 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 58 [2023-11-23 08:34:51,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:34:51,002 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2023-11-23 08:34:51,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 08:34:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2023-11-23 08:34:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 08:34:51,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:34:51,003 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:34:51,024 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 08:34:51,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 08:34:51,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:34:51,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:34:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1445175523, now seen corresponding path program 1 times [2023-11-23 08:34:51,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:34:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25821616] [2023-11-23 08:34:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:51,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:34:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:34:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:34:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:34:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:34:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:34:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:34:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:34:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 08:34:51,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:34:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25821616] [2023-11-23 08:34:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25821616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:34:51,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:34:51,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:34:51,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847512298] [2023-11-23 08:34:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:34:51,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:34:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:34:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:34:51,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:34:51,822 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 08:34:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:34:52,541 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2023-11-23 08:34:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:34:52,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2023-11-23 08:34:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:34:52,544 INFO L225 Difference]: With dead ends: 89 [2023-11-23 08:34:52,545 INFO L226 Difference]: Without dead ends: 87 [2023-11-23 08:34:52,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:34:52,547 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 17 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:34:52,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 593 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:34:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-23 08:34:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2023-11-23 08:34:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (29), 21 states have call predecessors, (29), 21 states have call successors, (29) [2023-11-23 08:34:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 114 transitions. [2023-11-23 08:34:52,555 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 114 transitions. Word has length 62 [2023-11-23 08:34:52,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:34:52,555 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 114 transitions. [2023-11-23 08:34:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 08:34:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions. [2023-11-23 08:34:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 08:34:52,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:34:52,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:34:52,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 08:34:52,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:34:52,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:34:52,557 INFO L85 PathProgramCache]: Analyzing trace with hash 129420885, now seen corresponding path program 1 times [2023-11-23 08:34:52,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:34:52,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736963084] [2023-11-23 08:34:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:52,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:34:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:34:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:34:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:34:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:34:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:34:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:34:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:34:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 08:34:53,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:34:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736963084] [2023-11-23 08:34:53,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736963084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:34:53,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684198340] [2023-11-23 08:34:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:53,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:53,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:34:53,946 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 08:34:53,947 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 08:34:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:54,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 08:34:54,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:34:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 08:34:55,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:34:55,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684198340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:34:55,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:34:55,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2023-11-23 08:34:55,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475708076] [2023-11-23 08:34:55,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:34:55,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:34:55,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:34:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:34:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:34:55,017 INFO L87 Difference]: Start difference. First operand 86 states and 114 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 08:34:56,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:34:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:34:57,717 INFO L93 Difference]: Finished difference Result 212 states and 288 transitions. [2023-11-23 08:34:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 08:34:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2023-11-23 08:34:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:34:57,720 INFO L225 Difference]: With dead ends: 212 [2023-11-23 08:34:57,720 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 08:34:57,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:34:57,721 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 139 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:34:57,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 438 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 08:34:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 08:34:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2023-11-23 08:34:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 100 states have internal predecessors, (112), 34 states have call successors, (34), 14 states have call predecessors, (34), 18 states have return successors, (47), 31 states have call predecessors, (47), 30 states have call successors, (47) [2023-11-23 08:34:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 193 transitions. [2023-11-23 08:34:57,734 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 193 transitions. Word has length 66 [2023-11-23 08:34:57,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:34:57,735 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 193 transitions. [2023-11-23 08:34:57,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 08:34:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 193 transitions. [2023-11-23 08:34:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 08:34:57,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:34:57,736 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:34:57,752 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 08:34:57,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:57,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:34:57,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:34:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 830485463, now seen corresponding path program 1 times [2023-11-23 08:34:57,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:34:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467996628] [2023-11-23 08:34:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:34:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:34:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:34:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:34:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:59,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:34:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:34:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:59,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:34:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:34:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:34:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 08:34:59,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:34:59,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467996628] [2023-11-23 08:34:59,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467996628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:34:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171944185] [2023-11-23 08:34:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:34:59,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:34:59,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:34:59,123 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 08:34:59,125 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 08:34:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:34:59,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:34:59,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:34:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 08:34:59,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:34:59,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171944185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:34:59,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:34:59,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-23 08:34:59,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813916494] [2023-11-23 08:34:59,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:34:59,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:34:59,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:34:59,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:34:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:34:59,579 INFO L87 Difference]: Start difference. First operand 146 states and 193 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 08:35:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:00,093 INFO L93 Difference]: Finished difference Result 264 states and 360 transitions. [2023-11-23 08:35:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:35:00,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2023-11-23 08:35:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:00,095 INFO L225 Difference]: With dead ends: 264 [2023-11-23 08:35:00,095 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 08:35:00,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:35:00,096 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 10 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:00,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 220 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:35:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 08:35:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-23 08:35:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 92 states have internal predecessors, (101), 33 states have call successors, (33), 14 states have call predecessors, (33), 17 states have return successors, (42), 30 states have call predecessors, (42), 29 states have call successors, (42) [2023-11-23 08:35:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2023-11-23 08:35:00,106 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 66 [2023-11-23 08:35:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:00,106 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2023-11-23 08:35:00,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 08:35:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2023-11-23 08:35:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 08:35:00,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:00,107 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:00,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:35:00,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:00,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:00,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1352338368, now seen corresponding path program 1 times [2023-11-23 08:35:00,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:00,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182355753] [2023-11-23 08:35:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:00,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:35:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:35:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:35:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:35:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:35:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:35:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:35:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 08:35:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:01,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182355753] [2023-11-23 08:35:01,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182355753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:01,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742639996] [2023-11-23 08:35:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:01,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:01,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:01,408 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 08:35:01,432 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 08:35:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:01,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 2514 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-23 08:35:01,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:01,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:35:02,395 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 08:35:02,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 31 [2023-11-23 08:35:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 08:35:02,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:35:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 08:35:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742639996] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:35:02,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:35:02,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 10] total 20 [2023-11-23 08:35:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701232014] [2023-11-23 08:35:02,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:35:02,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 08:35:02,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 08:35:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:35:02,598 INFO L87 Difference]: Start difference. First operand 137 states and 176 transitions. Second operand has 20 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-23 08:35:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:05,661 INFO L93 Difference]: Finished difference Result 450 states and 611 transitions. [2023-11-23 08:35:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 08:35:05,663 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 70 [2023-11-23 08:35:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:05,665 INFO L225 Difference]: With dead ends: 450 [2023-11-23 08:35:05,665 INFO L226 Difference]: Without dead ends: 333 [2023-11-23 08:35:05,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 141 SyntacticMatches, 14 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 08:35:05,667 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 220 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:05,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 538 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 08:35:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-23 08:35:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 292. [2023-11-23 08:35:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 182 states have (on average 1.1538461538461537) internal successors, (210), 193 states have internal predecessors, (210), 76 states have call successors, (76), 28 states have call predecessors, (76), 33 states have return successors, (97), 70 states have call predecessors, (97), 68 states have call successors, (97) [2023-11-23 08:35:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 383 transitions. [2023-11-23 08:35:05,699 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 383 transitions. Word has length 70 [2023-11-23 08:35:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:05,701 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 383 transitions. [2023-11-23 08:35:05,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-23 08:35:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 383 transitions. [2023-11-23 08:35:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 08:35:05,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:05,702 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:05,720 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 08:35:05,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:05,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:05,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash -789902804, now seen corresponding path program 1 times [2023-11-23 08:35:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:05,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173887027] [2023-11-23 08:35:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:05,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:35:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:35:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:35:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:35:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:35:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:35:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:35:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:35:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 08:35:06,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:06,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173887027] [2023-11-23 08:35:06,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173887027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:06,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:35:06,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:35:06,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917460425] [2023-11-23 08:35:06,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:06,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:35:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:35:06,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:35:06,142 INFO L87 Difference]: Start difference. First operand 292 states and 383 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:35:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:06,505 INFO L93 Difference]: Finished difference Result 448 states and 578 transitions. [2023-11-23 08:35:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:35:06,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2023-11-23 08:35:06,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:06,509 INFO L225 Difference]: With dead ends: 448 [2023-11-23 08:35:06,509 INFO L226 Difference]: Without dead ends: 290 [2023-11-23 08:35:06,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:35:06,510 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 14 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:06,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 231 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:35:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-23 08:35:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-11-23 08:35:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 181 states have (on average 1.149171270718232) internal successors, (208), 191 states have internal predecessors, (208), 76 states have call successors, (76), 28 states have call predecessors, (76), 32 states have return successors, (91), 70 states have call predecessors, (91), 68 states have call successors, (91) [2023-11-23 08:35:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 375 transitions. [2023-11-23 08:35:06,533 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 375 transitions. Word has length 73 [2023-11-23 08:35:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:06,534 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 375 transitions. [2023-11-23 08:35:06,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:35:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 375 transitions. [2023-11-23 08:35:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 08:35:06,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:06,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:06,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 08:35:06,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:06,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash -648047577, now seen corresponding path program 1 times [2023-11-23 08:35:06,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:06,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474710839] [2023-11-23 08:35:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:06,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:35:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:35:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 08:35:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:35:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:35:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:35:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:35:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:35:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 08:35:06,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:06,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474710839] [2023-11-23 08:35:06,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474710839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:06,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:35:06,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:35:06,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068160612] [2023-11-23 08:35:06,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:06,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:35:06,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:35:06,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:35:06,995 INFO L87 Difference]: Start difference. First operand 290 states and 375 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 08:35:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:07,961 INFO L93 Difference]: Finished difference Result 312 states and 398 transitions. [2023-11-23 08:35:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:35:07,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75 [2023-11-23 08:35:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:07,966 INFO L225 Difference]: With dead ends: 312 [2023-11-23 08:35:07,966 INFO L226 Difference]: Without dead ends: 310 [2023-11-23 08:35:07,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:35:07,967 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 16 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:07,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 596 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:35:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-23 08:35:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2023-11-23 08:35:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 193 states have (on average 1.1398963730569949) internal successors, (220), 203 states have internal predecessors, (220), 78 states have call successors, (78), 32 states have call predecessors, (78), 36 states have return successors, (93), 72 states have call predecessors, (93), 70 states have call successors, (93) [2023-11-23 08:35:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 391 transitions. [2023-11-23 08:35:07,989 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 391 transitions. Word has length 75 [2023-11-23 08:35:07,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:07,989 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 391 transitions. [2023-11-23 08:35:07,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 08:35:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 391 transitions. [2023-11-23 08:35:07,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 08:35:07,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:07,991 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:07,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 08:35:07,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:07,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:07,991 INFO L85 PathProgramCache]: Analyzing trace with hash -282379072, now seen corresponding path program 1 times [2023-11-23 08:35:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:07,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443679449] [2023-11-23 08:35:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:35:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:35:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:35:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:35:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:35:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:35:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:35:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 08:35:08,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:08,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443679449] [2023-11-23 08:35:08,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443679449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:08,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574019467] [2023-11-23 08:35:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:08,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:08,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:08,576 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 08:35:08,604 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 08:35:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:08,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:35:08,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 08:35:09,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:35:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574019467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:09,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:35:09,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2023-11-23 08:35:09,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782555497] [2023-11-23 08:35:09,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:09,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:35:09,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:09,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:35:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:35:09,007 INFO L87 Difference]: Start difference. First operand 308 states and 391 transitions. Second operand has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 08:35:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:09,924 INFO L93 Difference]: Finished difference Result 557 states and 706 transitions. [2023-11-23 08:35:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:35:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-23 08:35:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:09,926 INFO L225 Difference]: With dead ends: 557 [2023-11-23 08:35:09,926 INFO L226 Difference]: Without dead ends: 324 [2023-11-23 08:35:09,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:35:09,928 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 12 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:09,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 657 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:35:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-23 08:35:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 316. [2023-11-23 08:35:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 199 states have (on average 1.135678391959799) internal successors, (226), 211 states have internal predecessors, (226), 78 states have call successors, (78), 32 states have call predecessors, (78), 38 states have return successors, (102), 72 states have call predecessors, (102), 70 states have call successors, (102) [2023-11-23 08:35:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 406 transitions. [2023-11-23 08:35:09,955 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 406 transitions. Word has length 78 [2023-11-23 08:35:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:09,955 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 406 transitions. [2023-11-23 08:35:09,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 08:35:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 406 transitions. [2023-11-23 08:35:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 08:35:09,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:09,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:09,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:35:10,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:10,175 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:10,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2073339943, now seen corresponding path program 1 times [2023-11-23 08:35:10,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:10,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718694801] [2023-11-23 08:35:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:10,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:35:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:35:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:35:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:35:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:35:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:35:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:35:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 08:35:10,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718694801] [2023-11-23 08:35:10,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718694801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182574532] [2023-11-23 08:35:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:10,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:10,754 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 08:35:10,788 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 08:35:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:11,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-23 08:35:11,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:11,195 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 08:35:11,199 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 08:35:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 08:35:11,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:35:11,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182574532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:11,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:35:11,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2023-11-23 08:35:11,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030029699] [2023-11-23 08:35:11,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:11,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:35:11,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:11,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:35:11,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:35:11,755 INFO L87 Difference]: Start difference. First operand 316 states and 406 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 5 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 08:35:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:14,385 INFO L93 Difference]: Finished difference Result 711 states and 907 transitions. [2023-11-23 08:35:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:35:14,385 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 5 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 80 [2023-11-23 08:35:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:14,387 INFO L225 Difference]: With dead ends: 711 [2023-11-23 08:35:14,387 INFO L226 Difference]: Without dead ends: 432 [2023-11-23 08:35:14,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:35:14,389 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 77 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:14,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 484 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 08:35:14,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-23 08:35:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 428. [2023-11-23 08:35:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 274 states have (on average 1.1240875912408759) internal successors, (308), 288 states have internal predecessors, (308), 104 states have call successors, (104), 43 states have call predecessors, (104), 49 states have return successors, (130), 96 states have call predecessors, (130), 94 states have call successors, (130) [2023-11-23 08:35:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 542 transitions. [2023-11-23 08:35:14,420 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 542 transitions. Word has length 80 [2023-11-23 08:35:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:14,420 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 542 transitions. [2023-11-23 08:35:14,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 5 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 08:35:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 542 transitions. [2023-11-23 08:35:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 08:35:14,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:14,422 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:14,439 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 08:35:14,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:14,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:14,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1543910508, now seen corresponding path program 1 times [2023-11-23 08:35:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:14,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641415553] [2023-11-23 08:35:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:14,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:35:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:35:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:35:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:35:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:35:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:35:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:35:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:35:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 08:35:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:15,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641415553] [2023-11-23 08:35:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641415553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:15,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77862740] [2023-11-23 08:35:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:15,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:35:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:35:15,189 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 08:35:15,195 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 08:35:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:15,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-23 08:35:15,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:35:15,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:35:16,213 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:35:16,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-23 08:35:16,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-23 08:35:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 24 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 08:35:16,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:35:17,372 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-23 08:35:17,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2023-11-23 08:35:19,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77862740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:35:19,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:35:19,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 22] total 30 [2023-11-23 08:35:19,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671344346] [2023-11-23 08:35:19,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:35:19,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 08:35:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 08:35:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1411, Unknown=11, NotChecked=0, Total=1560 [2023-11-23 08:35:19,538 INFO L87 Difference]: Start difference. First operand 428 states and 542 transitions. Second operand has 30 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 25 states have internal predecessors, (91), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-23 08:35:24,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:27,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:31,340 WARN L539 Checker$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 08:35:33,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:35,700 WARN L539 Checker$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 08:35:37,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:40,186 WARN L539 Checker$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 08:35:42,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:44,381 WARN L539 Checker$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 08:35:46,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:35:48,723 WARN L539 Checker$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 08:35:52,392 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 08:35:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:52,548 INFO L93 Difference]: Finished difference Result 1031 states and 1289 transitions. [2023-11-23 08:35:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-23 08:35:52,549 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 25 states have internal predecessors, (91), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) Word has length 93 [2023-11-23 08:35:52,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:52,551 INFO L225 Difference]: With dead ends: 1031 [2023-11-23 08:35:52,551 INFO L226 Difference]: Without dead ends: 669 [2023-11-23 08:35:52,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 106 SyntacticMatches, 11 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=934, Invalid=8755, Unknown=13, NotChecked=0, Total=9702 [2023-11-23 08:35:52,555 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 314 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 176 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:52,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1091 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3579 Invalid, 12 Unknown, 0 Unchecked, 30.5s Time] [2023-11-23 08:35:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-11-23 08:35:52,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 586. [2023-11-23 08:35:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 380 states have (on average 1.1421052631578947) internal successors, (434), 401 states have internal predecessors, (434), 134 states have call successors, (134), 61 states have call predecessors, (134), 71 states have return successors, (162), 123 states have call predecessors, (162), 116 states have call successors, (162) [2023-11-23 08:35:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 730 transitions. [2023-11-23 08:35:52,601 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 730 transitions. Word has length 93 [2023-11-23 08:35:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:52,602 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 730 transitions. [2023-11-23 08:35:52,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 25 states have internal predecessors, (91), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2023-11-23 08:35:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 730 transitions. [2023-11-23 08:35:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 08:35:52,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:52,605 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 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] [2023-11-23 08:35:52,622 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 08:35:52,820 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,SelfDestructingSolverStorable11 [2023-11-23 08:35:52,820 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:52,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -694393883, now seen corresponding path program 1 times [2023-11-23 08:35:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668430738] [2023-11-23 08:35:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:35:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:35:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:35:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:35:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:35:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:35:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 08:35:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:35:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:35:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:35:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 08:35:53,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668430738] [2023-11-23 08:35:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668430738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:53,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:35:53,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:35:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581428428] [2023-11-23 08:35:53,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:35:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:35:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:35:53,304 INFO L87 Difference]: Start difference. First operand 586 states and 730 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 08:35:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:54,360 INFO L93 Difference]: Finished difference Result 617 states and 763 transitions. [2023-11-23 08:35:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:35:54,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2023-11-23 08:35:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:54,364 INFO L225 Difference]: With dead ends: 617 [2023-11-23 08:35:54,364 INFO L226 Difference]: Without dead ends: 615 [2023-11-23 08:35:54,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:35:54,365 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 49 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:54,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 336 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:35:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-23 08:35:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 598. [2023-11-23 08:35:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 388 states have (on average 1.1365979381443299) internal successors, (441), 409 states have internal predecessors, (441), 134 states have call successors, (134), 64 states have call predecessors, (134), 75 states have return successors, (164), 124 states have call predecessors, (164), 118 states have call successors, (164) [2023-11-23 08:35:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 739 transitions. [2023-11-23 08:35:54,415 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 739 transitions. Word has length 90 [2023-11-23 08:35:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:54,415 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 739 transitions. [2023-11-23 08:35:54,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 08:35:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 739 transitions. [2023-11-23 08:35:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-23 08:35:54,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:54,416 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:35:54,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 08:35:54,417 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:54,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash 96843662, now seen corresponding path program 1 times [2023-11-23 08:35:54,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826784506] [2023-11-23 08:35:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:54,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:35:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:35:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:35:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:35:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:35:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:35:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:35:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:35:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 08:35:55,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826784506] [2023-11-23 08:35:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826784506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:55,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:35:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 08:35:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192927451] [2023-11-23 08:35:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:55,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:35:55,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:35:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:35:55,237 INFO L87 Difference]: Start difference. First operand 598 states and 739 transitions. Second operand has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 08:35:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:35:56,923 INFO L93 Difference]: Finished difference Result 646 states and 793 transitions. [2023-11-23 08:35:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:35:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 94 [2023-11-23 08:35:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:35:56,926 INFO L225 Difference]: With dead ends: 646 [2023-11-23 08:35:56,926 INFO L226 Difference]: Without dead ends: 644 [2023-11-23 08:35:56,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:35:56,927 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 72 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:35:56,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 554 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 08:35:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-11-23 08:35:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 600. [2023-11-23 08:35:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 391 states have (on average 1.1355498721227621) internal successors, (444), 413 states have internal predecessors, (444), 132 states have call successors, (132), 64 states have call predecessors, (132), 76 states have return successors, (166), 122 states have call predecessors, (166), 116 states have call successors, (166) [2023-11-23 08:35:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 742 transitions. [2023-11-23 08:35:56,981 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 742 transitions. Word has length 94 [2023-11-23 08:35:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:35:56,981 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 742 transitions. [2023-11-23 08:35:56,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 08:35:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 742 transitions. [2023-11-23 08:35:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 08:35:56,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:35:56,983 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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] [2023-11-23 08:35:56,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 08:35:56,983 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:35:56,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:35:56,984 INFO L85 PathProgramCache]: Analyzing trace with hash -400507726, now seen corresponding path program 1 times [2023-11-23 08:35:56,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:35:56,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606961397] [2023-11-23 08:35:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:35:56,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:35:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:35:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:35:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:35:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:35:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:35:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:35:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:35:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:35:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:35:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:35:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:35:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:35:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 08:35:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:35:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606961397] [2023-11-23 08:35:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606961397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:35:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:35:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-23 08:35:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500430778] [2023-11-23 08:35:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:35:58,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 08:35:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:35:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 08:35:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:35:58,936 INFO L87 Difference]: Start difference. First operand 600 states and 742 transitions. Second operand has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 16 states have internal predecessors, (46), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:36:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:36:01,133 INFO L93 Difference]: Finished difference Result 790 states and 988 transitions. [2023-11-23 08:36:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 08:36:01,134 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 16 states have internal predecessors, (46), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) Word has length 98 [2023-11-23 08:36:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:36:01,137 INFO L225 Difference]: With dead ends: 790 [2023-11-23 08:36:01,137 INFO L226 Difference]: Without dead ends: 648 [2023-11-23 08:36:01,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-11-23 08:36:01,138 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 75 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:36:01,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 413 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 08:36:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-11-23 08:36:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2023-11-23 08:36:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 400 states have (on average 1.135) internal successors, (454), 423 states have internal predecessors, (454), 139 states have call successors, (139), 64 states have call predecessors, (139), 77 states have return successors, (178), 129 states have call predecessors, (178), 123 states have call successors, (178) [2023-11-23 08:36:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 771 transitions. [2023-11-23 08:36:01,190 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 771 transitions. Word has length 98 [2023-11-23 08:36:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:36:01,190 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 771 transitions. [2023-11-23 08:36:01,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 16 states have internal predecessors, (46), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:36:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 771 transitions. [2023-11-23 08:36:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 08:36:01,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:36:01,192 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:36:01,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 08:36:01,192 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:36:01,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:36:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash 474907405, now seen corresponding path program 1 times [2023-11-23 08:36:01,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:36:01,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068872360] [2023-11-23 08:36:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:01,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:36:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:36:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:36:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:36:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:36:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:36:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:36:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:36:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 08:36:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:36:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:36:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:36:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:36:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:36:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-23 08:36:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:36:01,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068872360] [2023-11-23 08:36:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068872360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:36:01,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:36:01,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:36:01,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342311183] [2023-11-23 08:36:01,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:36:01,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:36:01,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:36:01,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:36:01,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:36:01,511 INFO L87 Difference]: Start difference. First operand 617 states and 771 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:36:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:36:02,034 INFO L93 Difference]: Finished difference Result 717 states and 878 transitions. [2023-11-23 08:36:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:36:02,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2023-11-23 08:36:02,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:36:02,037 INFO L225 Difference]: With dead ends: 717 [2023-11-23 08:36:02,037 INFO L226 Difference]: Without dead ends: 609 [2023-11-23 08:36:02,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:36:02,038 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 44 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:36:02,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 140 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:36:02,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-23 08:36:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2023-11-23 08:36:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 396 states have (on average 1.1136363636363635) internal successors, (441), 415 states have internal predecessors, (441), 139 states have call successors, (139), 64 states have call predecessors, (139), 73 states have return successors, (174), 129 states have call predecessors, (174), 123 states have call successors, (174) [2023-11-23 08:36:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 754 transitions. [2023-11-23 08:36:02,088 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 754 transitions. Word has length 101 [2023-11-23 08:36:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:36:02,088 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 754 transitions. [2023-11-23 08:36:02,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:36:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 754 transitions. [2023-11-23 08:36:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 08:36:02,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:36:02,090 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 08:36:02,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 08:36:02,090 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:36:02,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:36:02,091 INFO L85 PathProgramCache]: Analyzing trace with hash 618361816, now seen corresponding path program 1 times [2023-11-23 08:36:02,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:36:02,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757623705] [2023-11-23 08:36:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:36:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:36:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:36:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:36:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:36:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:36:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:36:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:36:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:36:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:36:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 08:36:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-23 08:36:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:36:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757623705] [2023-11-23 08:36:03,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757623705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:36:03,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94782709] [2023-11-23 08:36:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:03,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:36:03,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:36:03,784 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 08:36:03,785 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 08:36:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:04,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 2640 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 08:36:04,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:36:04,304 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 08:36:04,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:36:04,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-23 08:36:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 42 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 08:36:05,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:36:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94782709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:36:07,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:36:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2023-11-23 08:36:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327074958] [2023-11-23 08:36:07,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:36:07,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 08:36:07,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:36:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 08:36:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=940, Unknown=1, NotChecked=0, Total=1056 [2023-11-23 08:36:07,547 INFO L87 Difference]: Start difference. First operand 609 states and 754 transitions. Second operand has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 23 states have internal predecessors, (94), 9 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-23 08:36:11,648 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 08:36:13,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:16,707 WARN L539 Checker$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 08:36:18,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:21,005 WARN L539 Checker$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 08:36:23,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:36:25,324 WARN L539 Checker$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 08:36:26,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:36:26,009 INFO L93 Difference]: Finished difference Result 738 states and 895 transitions. [2023-11-23 08:36:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-23 08:36:26,010 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 23 states have internal predecessors, (94), 9 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) Word has length 99 [2023-11-23 08:36:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:36:26,011 INFO L225 Difference]: With dead ends: 738 [2023-11-23 08:36:26,011 INFO L226 Difference]: Without dead ends: 446 [2023-11-23 08:36:26,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 117 SyntacticMatches, 14 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=481, Invalid=3300, Unknown=1, NotChecked=0, Total=3782 [2023-11-23 08:36:26,013 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 174 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 79 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:36:26,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 607 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2007 Invalid, 7 Unknown, 0 Unchecked, 17.6s Time] [2023-11-23 08:36:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-11-23 08:36:26,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 405. [2023-11-23 08:36:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 272 states have (on average 1.1066176470588236) internal successors, (301), 281 states have internal predecessors, (301), 84 states have call successors, (84), 44 states have call predecessors, (84), 48 states have return successors, (101), 79 states have call predecessors, (101), 76 states have call successors, (101) [2023-11-23 08:36:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 486 transitions. [2023-11-23 08:36:26,047 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 486 transitions. Word has length 99 [2023-11-23 08:36:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:36:26,047 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 486 transitions. [2023-11-23 08:36:26,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 23 states have internal predecessors, (94), 9 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2023-11-23 08:36:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 486 transitions. [2023-11-23 08:36:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 08:36:26,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:36:26,049 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:36:26,064 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 08:36:26,265 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,SelfDestructingSolverStorable16 [2023-11-23 08:36:26,265 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:36:26,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:36:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1130653496, now seen corresponding path program 1 times [2023-11-23 08:36:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:36:26,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991834606] [2023-11-23 08:36:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:26,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:36:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:36:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:36:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:36:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:36:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:36:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:36:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:36:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 08:36:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:36:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:36:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:36:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:36:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:36:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 08:36:26,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:36:26,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991834606] [2023-11-23 08:36:26,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991834606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:36:26,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:36:26,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:36:26,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981414916] [2023-11-23 08:36:26,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:36:26,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:36:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:36:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:36:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:36:26,713 INFO L87 Difference]: Start difference. First operand 405 states and 486 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 08:36:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:36:27,991 INFO L93 Difference]: Finished difference Result 434 states and 518 transitions. [2023-11-23 08:36:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:36:27,992 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2023-11-23 08:36:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:36:27,993 INFO L225 Difference]: With dead ends: 434 [2023-11-23 08:36:27,993 INFO L226 Difference]: Without dead ends: 432 [2023-11-23 08:36:27,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:36:27,994 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 48 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:36:27,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 335 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:36:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-23 08:36:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 428. [2023-11-23 08:36:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 286 states have (on average 1.1013986013986015) internal successors, (315), 296 states have internal predecessors, (315), 88 states have call successors, (88), 48 states have call predecessors, (88), 53 states have return successors, (106), 83 states have call predecessors, (106), 80 states have call successors, (106) [2023-11-23 08:36:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 509 transitions. [2023-11-23 08:36:28,027 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 509 transitions. Word has length 103 [2023-11-23 08:36:28,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:36:28,028 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 509 transitions. [2023-11-23 08:36:28,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 08:36:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 509 transitions. [2023-11-23 08:36:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 08:36:28,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:36:28,029 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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] [2023-11-23 08:36:28,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 08:36:28,030 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:36:28,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:36:28,030 INFO L85 PathProgramCache]: Analyzing trace with hash -926942384, now seen corresponding path program 1 times [2023-11-23 08:36:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:36:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972609566] [2023-11-23 08:36:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:28,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:36:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:36:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:36:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:36:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:36:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:36:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:36:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:36:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:36:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:36:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:36:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:36:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 08:36:30,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:36:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972609566] [2023-11-23 08:36:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972609566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:36:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437648711] [2023-11-23 08:36:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:36:30,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:36:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:36:30,255 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 08:36:30,256 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 08:36:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:36:30,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-23 08:36:30,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:36:30,667 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 08:36:30,883 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 08:36:30,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 16 [2023-11-23 08:36:30,943 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 08:36:31,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-23 08:36:31,245 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:36:31,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 08:36:31,279 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 19 treesize of output 14 [2023-11-23 08:36:35,410 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 19 treesize of output 14 [2023-11-23 08:36:51,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:36:51,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-23 08:36:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 53 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 08:36:56,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:36:58,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437648711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:36:58,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:36:58,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 40 [2023-11-23 08:36:58,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994309514] [2023-11-23 08:36:58,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:36:58,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-23 08:36:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:36:58,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-23 08:36:58,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1869, Unknown=3, NotChecked=0, Total=2070 [2023-11-23 08:36:58,526 INFO L87 Difference]: Start difference. First operand 428 states and 509 transitions. Second operand has 40 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 35 states have internal predecessors, (112), 17 states have call successors, (26), 9 states have call predecessors, (26), 8 states have return successors, (23), 16 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-23 08:37:02,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:04,968 WARN L539 Checker$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 08:37:07,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:09,204 WARN L539 Checker$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 08:37:11,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:14,243 WARN L539 Checker$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 08:37:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:15,077 INFO L93 Difference]: Finished difference Result 607 states and 699 transitions. [2023-11-23 08:37:15,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-23 08:37:15,078 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 35 states have internal predecessors, (112), 17 states have call successors, (26), 9 states have call predecessors, (26), 8 states have return successors, (23), 16 states have call predecessors, (23), 14 states have call successors, (23) Word has length 101 [2023-11-23 08:37:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:15,080 INFO L225 Difference]: With dead ends: 607 [2023-11-23 08:37:15,080 INFO L226 Difference]: Without dead ends: 503 [2023-11-23 08:37:15,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 117 SyntacticMatches, 16 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=636, Invalid=5367, Unknown=3, NotChecked=0, Total=6006 [2023-11-23 08:37:15,082 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 269 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 162 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:15,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 461 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2265 Invalid, 6 Unknown, 0 Unchecked, 15.5s Time] [2023-11-23 08:37:15,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-23 08:37:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 369. [2023-11-23 08:37:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 254 states have (on average 1.0984251968503937) internal successors, (279), 263 states have internal predecessors, (279), 66 states have call successors, (66), 43 states have call predecessors, (66), 48 states have return successors, (74), 62 states have call predecessors, (74), 60 states have call successors, (74) [2023-11-23 08:37:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 419 transitions. [2023-11-23 08:37:15,118 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 419 transitions. Word has length 101 [2023-11-23 08:37:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:15,118 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 419 transitions. [2023-11-23 08:37:15,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 35 states have internal predecessors, (112), 17 states have call successors, (26), 9 states have call predecessors, (26), 8 states have return successors, (23), 16 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-23 08:37:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 419 transitions. [2023-11-23 08:37:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 08:37:15,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:15,119 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:37:15,135 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 08:37:15,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:37:15,335 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:15,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1024817792, now seen corresponding path program 1 times [2023-11-23 08:37:15,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:15,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484351403] [2023-11-23 08:37:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:15,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:37:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:37:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:37:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:37:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:37:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:37:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:37:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 08:37:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:37:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:37:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:37:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:37:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:37:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 08:37:16,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:37:16,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484351403] [2023-11-23 08:37:16,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484351403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:37:16,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728441439] [2023-11-23 08:37:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:16,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:37:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:37:16,729 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 08:37:16,730 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 08:37:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:17,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 08:37:17,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:37:17,314 INFO L349 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size [2023-11-23 08:37:17,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 08:37:17,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:37:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 08:37:18,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:37:18,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728441439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:37:18,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:37:18,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [16] total 32 [2023-11-23 08:37:18,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007181620] [2023-11-23 08:37:18,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:37:18,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 08:37:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:37:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 08:37:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-11-23 08:37:18,826 INFO L87 Difference]: Start difference. First operand 369 states and 419 transitions. Second operand has 18 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 7 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 08:37:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:23,458 INFO L93 Difference]: Finished difference Result 420 states and 479 transitions. [2023-11-23 08:37:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 08:37:23,459 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 7 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 107 [2023-11-23 08:37:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:23,460 INFO L225 Difference]: With dead ends: 420 [2023-11-23 08:37:23,460 INFO L226 Difference]: Without dead ends: 381 [2023-11-23 08:37:23,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 112 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=341, Invalid=2521, Unknown=0, NotChecked=0, Total=2862 [2023-11-23 08:37:23,461 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 161 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 117 mSolverCounterUnsat, 61 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 61 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:23,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 165 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1039 Invalid, 61 Unknown, 0 Unchecked, 4.0s Time] [2023-11-23 08:37:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-23 08:37:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 365. [2023-11-23 08:37:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 249 states have (on average 1.0843373493975903) internal successors, (270), 256 states have internal predecessors, (270), 68 states have call successors, (68), 45 states have call predecessors, (68), 47 states have return successors, (71), 63 states have call predecessors, (71), 60 states have call successors, (71) [2023-11-23 08:37:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 409 transitions. [2023-11-23 08:37:23,503 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 409 transitions. Word has length 107 [2023-11-23 08:37:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:23,503 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 409 transitions. [2023-11-23 08:37:23,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 7 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 08:37:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 409 transitions. [2023-11-23 08:37:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 08:37:23,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:23,505 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:37:23,521 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 08:37:23,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:37:23,720 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:23,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:23,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1072292561, now seen corresponding path program 1 times [2023-11-23 08:37:23,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:23,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237758894] [2023-11-23 08:37:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:23,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:37:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:37:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:37:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:37:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:37:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:37:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:37:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 08:37:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:37:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:37:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:37:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:37:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:37:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:37:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-23 08:37:24,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:37:24,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237758894] [2023-11-23 08:37:24,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237758894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:37:24,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:37:24,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 08:37:24,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245902300] [2023-11-23 08:37:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:37:24,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:37:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:37:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:37:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:37:24,986 INFO L87 Difference]: Start difference. First operand 365 states and 409 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-23 08:37:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:26,550 INFO L93 Difference]: Finished difference Result 381 states and 434 transitions. [2023-11-23 08:37:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 08:37:26,550 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 113 [2023-11-23 08:37:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:26,551 INFO L225 Difference]: With dead ends: 381 [2023-11-23 08:37:26,552 INFO L226 Difference]: Without dead ends: 236 [2023-11-23 08:37:26,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:37:26,553 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 61 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:26,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 260 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:37:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-23 08:37:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 226. [2023-11-23 08:37:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 158 states have (on average 1.1075949367088607) internal successors, (175), 163 states have internal predecessors, (175), 38 states have call successors, (38), 26 states have call predecessors, (38), 29 states have return successors, (42), 36 states have call predecessors, (42), 33 states have call successors, (42) [2023-11-23 08:37:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2023-11-23 08:37:26,574 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 113 [2023-11-23 08:37:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:26,574 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2023-11-23 08:37:26,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2023-11-23 08:37:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2023-11-23 08:37:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 08:37:26,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:26,575 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:37:26,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 08:37:26,576 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:26,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -905756894, now seen corresponding path program 1 times [2023-11-23 08:37:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773607048] [2023-11-23 08:37:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:26,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:37:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:37:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:37:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:37:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:37:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:37:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:37:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:37:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:37:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:37:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:37:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:37:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 08:37:27,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:37:27,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773607048] [2023-11-23 08:37:27,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773607048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:37:27,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367594629] [2023-11-23 08:37:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:27,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:37:27,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:37:27,558 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 08:37:27,565 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 08:37:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:28,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-23 08:37:28,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:37:28,164 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 08:37:28,310 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 08:37:28,328 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 08:37:28,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:37:28,333 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 08:37:28,625 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-23 08:37:28,626 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 08:37:28,662 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 19 treesize of output 14 [2023-11-23 08:37:28,740 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 19 treesize of output 14 [2023-11-23 08:37:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 47 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 08:37:29,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:37:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367594629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:37:31,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:37:31,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21] total 28 [2023-11-23 08:37:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253873492] [2023-11-23 08:37:31,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:37:31,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 08:37:31,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:37:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 08:37:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=821, Unknown=7, NotChecked=58, Total=992 [2023-11-23 08:37:31,625 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 24 states have internal predecessors, (114), 10 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2023-11-23 08:37:35,591 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 08:37:38,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:40,596 WARN L539 Checker$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 08:37:42,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:37:45,342 WARN L539 Checker$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 08:37:45,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:45,949 INFO L93 Difference]: Finished difference Result 442 states and 503 transitions. [2023-11-23 08:37:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-23 08:37:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 24 states have internal predecessors, (114), 10 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 111 [2023-11-23 08:37:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:45,952 INFO L225 Difference]: With dead ends: 442 [2023-11-23 08:37:45,952 INFO L226 Difference]: Without dead ends: 270 [2023-11-23 08:37:45,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 176 SyntacticMatches, 16 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=468, Invalid=2950, Unknown=8, NotChecked=114, Total=3540 [2023-11-23 08:37:45,953 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 312 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 154 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:45,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 350 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1920 Invalid, 5 Unknown, 206 Unchecked, 13.4s Time] [2023-11-23 08:37:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-23 08:37:45,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 257. [2023-11-23 08:37:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 179 states have (on average 1.1284916201117319) internal successors, (202), 189 states have internal predecessors, (202), 42 states have call successors, (42), 29 states have call predecessors, (42), 35 states have return successors, (47), 38 states have call predecessors, (47), 36 states have call successors, (47) [2023-11-23 08:37:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 291 transitions. [2023-11-23 08:37:45,977 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 291 transitions. Word has length 111 [2023-11-23 08:37:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:45,977 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 291 transitions. [2023-11-23 08:37:45,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 24 states have internal predecessors, (114), 10 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2023-11-23 08:37:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 291 transitions. [2023-11-23 08:37:45,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 08:37:45,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:45,978 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:37:45,996 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 08:37:46,194 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,SelfDestructingSolverStorable21 [2023-11-23 08:37:46,194 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:46,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1098592580, now seen corresponding path program 1 times [2023-11-23 08:37:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:46,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413256951] [2023-11-23 08:37:46,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:37:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:37:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:37:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:37:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:37:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:37:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:37:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:37:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:37:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 08:37:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:37:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:37:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 08:37:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:37:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413256951] [2023-11-23 08:37:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413256951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:37:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836959286] [2023-11-23 08:37:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:47,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:37:47,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:37:47,210 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 08:37:47,210 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 08:37:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:47,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 08:37:47,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:37:47,652 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2023-11-23 08:37:47,653 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 28 [2023-11-23 08:37:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 08:37:47,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:37:47,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836959286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:37:47,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:37:47,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2023-11-23 08:37:47,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16835780] [2023-11-23 08:37:47,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:37:47,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:37:47,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:37:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:37:47,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:37:47,996 INFO L87 Difference]: Start difference. First operand 257 states and 291 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 08:37:49,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:49,778 INFO L93 Difference]: Finished difference Result 458 states and 518 transitions. [2023-11-23 08:37:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:37:49,779 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2023-11-23 08:37:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:49,783 INFO L225 Difference]: With dead ends: 458 [2023-11-23 08:37:49,783 INFO L226 Difference]: Without dead ends: 367 [2023-11-23 08:37:49,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:37:49,784 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 68 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:49,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 374 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 08:37:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-23 08:37:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 280. [2023-11-23 08:37:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 196 states have (on average 1.1275510204081634) internal successors, (221), 208 states have internal predecessors, (221), 45 states have call successors, (45), 31 states have call predecessors, (45), 38 states have return successors, (51), 40 states have call predecessors, (51), 39 states have call successors, (51) [2023-11-23 08:37:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 317 transitions. [2023-11-23 08:37:49,815 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 317 transitions. Word has length 114 [2023-11-23 08:37:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:49,816 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 317 transitions. [2023-11-23 08:37:49,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 08:37:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 317 transitions. [2023-11-23 08:37:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 08:37:49,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:49,817 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:37:49,836 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 08:37:50,024 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,SelfDestructingSolverStorable22 [2023-11-23 08:37:50,025 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:50,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:50,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1151295119, now seen corresponding path program 1 times [2023-11-23 08:37:50,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:50,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417469842] [2023-11-23 08:37:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:50,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:37:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:37:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:37:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:37:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:37:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:37:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:37:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:37:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:37:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:37:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:37:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:37:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-23 08:37:51,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:37:51,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417469842] [2023-11-23 08:37:51,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417469842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:37:51,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:37:51,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-23 08:37:51,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460461108] [2023-11-23 08:37:51,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:37:51,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 08:37:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:37:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 08:37:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:37:51,960 INFO L87 Difference]: Start difference. First operand 280 states and 317 transitions. Second operand has 21 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-23 08:37:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:54,052 INFO L93 Difference]: Finished difference Result 418 states and 473 transitions. [2023-11-23 08:37:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 08:37:54,053 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) Word has length 117 [2023-11-23 08:37:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:54,054 INFO L225 Difference]: With dead ends: 418 [2023-11-23 08:37:54,054 INFO L226 Difference]: Without dead ends: 276 [2023-11-23 08:37:54,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 08:37:54,055 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 82 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:54,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 185 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 08:37:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-23 08:37:54,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2023-11-23 08:37:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 190 states have (on average 1.1210526315789473) internal successors, (213), 200 states have internal predecessors, (213), 45 states have call successors, (45), 31 states have call predecessors, (45), 36 states have return successors, (49), 40 states have call predecessors, (49), 39 states have call successors, (49) [2023-11-23 08:37:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 307 transitions. [2023-11-23 08:37:54,081 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 307 transitions. Word has length 117 [2023-11-23 08:37:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:54,082 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 307 transitions. [2023-11-23 08:37:54,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-23 08:37:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 307 transitions. [2023-11-23 08:37:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 08:37:54,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:54,083 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:37:54,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 08:37:54,083 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:54,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1118760650, now seen corresponding path program 1 times [2023-11-23 08:37:54,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:54,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494491655] [2023-11-23 08:37:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:54,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:37:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:37:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:37:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:37:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:37:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:37:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:37:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:37:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 08:37:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:37:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:37:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:37:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 08:37:54,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:37:54,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494491655] [2023-11-23 08:37:54,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494491655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:37:54,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:37:54,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 08:37:54,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686002363] [2023-11-23 08:37:54,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:37:54,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:37:54,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:37:54,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:37:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:37:54,898 INFO L87 Difference]: Start difference. First operand 272 states and 307 transitions. Second operand has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 08:37:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:56,687 INFO L93 Difference]: Finished difference Result 278 states and 312 transitions. [2023-11-23 08:37:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:37:56,688 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2023-11-23 08:37:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:56,689 INFO L225 Difference]: With dead ends: 278 [2023-11-23 08:37:56,689 INFO L226 Difference]: Without dead ends: 276 [2023-11-23 08:37:56,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:37:56,690 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 73 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:56,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 528 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 08:37:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-23 08:37:56,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 264. [2023-11-23 08:37:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 185 states have (on average 1.1135135135135135) internal successors, (206), 194 states have internal predecessors, (206), 44 states have call successors, (44), 30 states have call predecessors, (44), 34 states have return successors, (46), 39 states have call predecessors, (46), 38 states have call successors, (46) [2023-11-23 08:37:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 296 transitions. [2023-11-23 08:37:56,727 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 296 transitions. Word has length 119 [2023-11-23 08:37:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:56,727 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 296 transitions. [2023-11-23 08:37:56,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 08:37:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 296 transitions. [2023-11-23 08:37:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 08:37:56,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:56,729 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2023-11-23 08:37:56,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 08:37:56,729 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:56,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash -387635919, now seen corresponding path program 1 times [2023-11-23 08:37:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:56,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079783817] [2023-11-23 08:37:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:56,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:37:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:37:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:37:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:37:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:37:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:37:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:37:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:37:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:37:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:37:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:37:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:37:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:37:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:37:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 08:37:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:37:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 08:37:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:37:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079783817] [2023-11-23 08:37:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079783817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:37:57,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:37:57,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 08:37:57,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818101859] [2023-11-23 08:37:57,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:37:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:37:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:37:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:37:57,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:37:57,628 INFO L87 Difference]: Start difference. First operand 264 states and 296 transitions. Second operand has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 08:37:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:37:59,701 INFO L93 Difference]: Finished difference Result 281 states and 313 transitions. [2023-11-23 08:37:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:37:59,701 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 131 [2023-11-23 08:37:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:37:59,702 INFO L225 Difference]: With dead ends: 281 [2023-11-23 08:37:59,702 INFO L226 Difference]: Without dead ends: 279 [2023-11-23 08:37:59,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:37:59,703 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 78 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:37:59,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 471 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 08:37:59,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-23 08:37:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 240. [2023-11-23 08:37:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 171 states have (on average 1.1111111111111112) internal successors, (190), 180 states have internal predecessors, (190), 36 states have call successors, (36), 26 states have call predecessors, (36), 32 states have return successors, (42), 33 states have call predecessors, (42), 34 states have call successors, (42) [2023-11-23 08:37:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 268 transitions. [2023-11-23 08:37:59,728 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 268 transitions. Word has length 131 [2023-11-23 08:37:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:37:59,728 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 268 transitions. [2023-11-23 08:37:59,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 08:37:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 268 transitions. [2023-11-23 08:37:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 08:37:59,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:37:59,730 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 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] [2023-11-23 08:37:59,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 08:37:59,730 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:37:59,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:37:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash 529064933, now seen corresponding path program 1 times [2023-11-23 08:37:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:37:59,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549796266] [2023-11-23 08:37:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:37:59,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:37:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:38:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:38:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:38:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:38:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:38:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:38:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:38:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:38:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:38:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:38:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:38:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:38:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:38:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 08:38:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:38:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:38:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 08:38:00,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:38:00,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549796266] [2023-11-23 08:38:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549796266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:38:00,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:38:00,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 08:38:00,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058894789] [2023-11-23 08:38:00,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:38:00,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:38:00,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:38:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:38:00,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:38:00,969 INFO L87 Difference]: Start difference. First operand 240 states and 268 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 08:38:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:38:02,703 INFO L93 Difference]: Finished difference Result 271 states and 311 transitions. [2023-11-23 08:38:02,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:38:02,703 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2023-11-23 08:38:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:38:02,704 INFO L225 Difference]: With dead ends: 271 [2023-11-23 08:38:02,704 INFO L226 Difference]: Without dead ends: 258 [2023-11-23 08:38:02,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:38:02,705 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 65 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:38:02,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 272 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 08:38:02,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-23 08:38:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 251. [2023-11-23 08:38:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 175 states have (on average 1.1085714285714285) internal successors, (194), 184 states have internal predecessors, (194), 42 states have call successors, (42), 26 states have call predecessors, (42), 33 states have return successors, (50), 40 states have call predecessors, (50), 40 states have call successors, (50) [2023-11-23 08:38:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 286 transitions. [2023-11-23 08:38:02,735 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 286 transitions. Word has length 142 [2023-11-23 08:38:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:38:02,735 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 286 transitions. [2023-11-23 08:38:02,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 08:38:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 286 transitions. [2023-11-23 08:38:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 08:38:02,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:38:02,736 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:38:02,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 08:38:02,737 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:38:02,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:38:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 971171802, now seen corresponding path program 1 times [2023-11-23 08:38:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:38:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556136867] [2023-11-23 08:38:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:38:02,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:38:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:38:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:38:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:38:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:38:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:38:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:38:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:38:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:38:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:38:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:38:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:38:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:38:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:38:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:38:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 08:38:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 08:38:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 08:38:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 08:38:03,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:38:03,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556136867] [2023-11-23 08:38:03,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556136867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:38:03,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247728522] [2023-11-23 08:38:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:38:03,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:38:03,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:38:03,954 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 08:38:03,955 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 08:38:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:04,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 08:38:04,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:38:04,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-23 08:38:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:38:04,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:38:04,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247728522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:38:04,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:38:04,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2023-11-23 08:38:04,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819842464] [2023-11-23 08:38:04,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:38:04,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:38:04,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:38:04,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:38:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:38:04,699 INFO L87 Difference]: Start difference. First operand 251 states and 286 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 08:38:07,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:38:09,992 WARN L539 Checker$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 08:38:12,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:38:14,029 WARN L539 Checker$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 08:38:16,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:38:18,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:38:20,270 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 08:38:20,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:38:20,452 INFO L93 Difference]: Finished difference Result 404 states and 445 transitions. [2023-11-23 08:38:20,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:38:20,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 146 [2023-11-23 08:38:20,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:38:20,454 INFO L225 Difference]: With dead ends: 404 [2023-11-23 08:38:20,454 INFO L226 Difference]: Without dead ends: 314 [2023-11-23 08:38:20,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 174 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:38:20,455 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 70 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:38:20,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 319 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 316 Invalid, 7 Unknown, 0 Unchecked, 15.6s Time] [2023-11-23 08:38:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-11-23 08:38:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2023-11-23 08:38:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 224 states have (on average 1.0982142857142858) internal successors, (246), 234 states have internal predecessors, (246), 45 states have call successors, (45), 35 states have call predecessors, (45), 42 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2023-11-23 08:38:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 343 transitions. [2023-11-23 08:38:20,491 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 343 transitions. Word has length 146 [2023-11-23 08:38:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:38:20,492 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 343 transitions. [2023-11-23 08:38:20,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 08:38:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 343 transitions. [2023-11-23 08:38:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 08:38:20,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:38:20,493 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:38:20,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-23 08:38:20,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:38:20,708 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:38:20,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:38:20,709 INFO L85 PathProgramCache]: Analyzing trace with hash 225191636, now seen corresponding path program 1 times [2023-11-23 08:38:20,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:38:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766560166] [2023-11-23 08:38:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:38:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:38:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:38:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:38:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:38:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:38:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:38:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:38:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:38:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:38:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:38:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:38:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:38:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:38:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:38:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 08:38:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:38:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:38:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 08:38:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-23 08:38:21,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:38:21,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766560166] [2023-11-23 08:38:21,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766560166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:38:21,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356776252] [2023-11-23 08:38:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:38:21,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:38:21,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:38:21,570 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 08:38:21,571 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 08:38:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:22,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 2803 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 08:38:22,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:38:22,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 08:38:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 69 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 08:38:22,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:38:22,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-23 08:38:22,475 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 08:38:22,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-11-23 08:38:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-23 08:38:22,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356776252] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:38:22,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:38:22,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 7] total 16 [2023-11-23 08:38:22,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699408144] [2023-11-23 08:38:22,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:38:22,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 08:38:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:38:22,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 08:38:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:38:22,568 INFO L87 Difference]: Start difference. First operand 312 states and 343 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 14 states have internal predecessors, (100), 8 states have call successors, (49), 5 states have call predecessors, (49), 4 states have return successors, (46), 7 states have call predecessors, (46), 7 states have call successors, (46) [2023-11-23 08:38:25,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:38:25,210 INFO L93 Difference]: Finished difference Result 440 states and 485 transitions. [2023-11-23 08:38:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 08:38:25,210 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 14 states have internal predecessors, (100), 8 states have call successors, (49), 5 states have call predecessors, (49), 4 states have return successors, (46), 7 states have call predecessors, (46), 7 states have call successors, (46) Word has length 148 [2023-11-23 08:38:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:38:25,211 INFO L225 Difference]: With dead ends: 440 [2023-11-23 08:38:25,211 INFO L226 Difference]: Without dead ends: 315 [2023-11-23 08:38:25,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 320 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2023-11-23 08:38:25,212 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 95 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 55 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:38:25,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 258 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 933 Invalid, 4 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 08:38:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-23 08:38:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2023-11-23 08:38:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 221 states have (on average 1.0950226244343892) internal successors, (242), 230 states have internal predecessors, (242), 48 states have call successors, (48), 34 states have call predecessors, (48), 41 states have return successors, (52), 46 states have call predecessors, (52), 43 states have call successors, (52) [2023-11-23 08:38:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 342 transitions. [2023-11-23 08:38:25,270 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 342 transitions. Word has length 148 [2023-11-23 08:38:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:38:25,270 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 342 transitions. [2023-11-23 08:38:25,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 14 states have internal predecessors, (100), 8 states have call successors, (49), 5 states have call predecessors, (49), 4 states have return successors, (46), 7 states have call predecessors, (46), 7 states have call successors, (46) [2023-11-23 08:38:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 342 transitions. [2023-11-23 08:38:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 08:38:25,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:38:25,272 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 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] [2023-11-23 08:38:25,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 08:38:25,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-23 08:38:25,484 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:38:25,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:38:25,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1139221397, now seen corresponding path program 2 times [2023-11-23 08:38:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:38:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789640977] [2023-11-23 08:38:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:38:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:38:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:27,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:38:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:38:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:38:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:38:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:38:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:38:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:38:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:38:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:38:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:38:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:38:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:38:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:38:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:38:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:38:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:38:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 08:38:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:38:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:38:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 11 proven. 88 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 08:38:28,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:38:28,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789640977] [2023-11-23 08:38:28,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789640977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:38:28,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006845880] [2023-11-23 08:38:28,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:38:28,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:38:28,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:38:28,926 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:38:28,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 08:38:29,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:38:29,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:38:29,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 84 conjunts are in the unsatisfiable core [2023-11-23 08:38:29,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:38:29,420 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 08:38:29,660 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 08:38:29,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 16 [2023-11-23 08:38:29,841 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:38:29,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 08:38:29,871 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 8 treesize of output 1 [2023-11-23 08:38:29,878 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 8 treesize of output 1 [2023-11-23 08:38:42,376 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2023-11-23 08:38:42,376 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 38 treesize of output 33 Killed by 15