./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_reserve_relative_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_reserve_relative_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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:55:49,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:55:49,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:55:49,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:55:49,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:55:49,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:55:49,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:55:49,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:55:49,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:55:49,380 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:55:49,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:55:49,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:55:49,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:55:49,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:55:49,383 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:55:49,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:55:49,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:55:49,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:55:49,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:55:49,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:55:49,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:55:49,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:55:49,386 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:55:49,386 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:55:49,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:55:49,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:55:49,387 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:55:49,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:55:49,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:55:49,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:55:49,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:55:49,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:55:49,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:55:49,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:55:49,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:55:49,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:55:49,391 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:55:49,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:55:49,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:55:49,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:55:49,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:55:49,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:55:49,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:55:49,905 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:55:49,905 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:55:49,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2023-11-23 06:55:51,706 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:55:52,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:55:52,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2023-11-23 06:55:52,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2948827/4cf735cbf668450eb8771ef0247ce491/FLAGed10bca9b [2023-11-23 06:55:52,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2948827/4cf735cbf668450eb8771ef0247ce491 [2023-11-23 06:55:52,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:55:52,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:55:52,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:55:52,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:55:52,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:55:52,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:55:52" (1/1) ... [2023-11-23 06:55:52,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5800b72e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:52, skipping insertion in model container [2023-11-23 06:55:52,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:55:52" (1/1) ... [2023-11-23 06:55:52,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:55:52,849 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2023-11-23 06:55:52,855 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2023-11-23 06:55:53,829 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:53,830 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:53,832 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:53,833 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:53,835 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:53,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:53,860 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:53,866 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:53,867 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:54,371 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:55:54,373 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:55:54,373 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:55:54,375 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:55:54,376 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:55:54,376 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:55:54,377 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:55:54,379 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:55:54,380 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:55:54,380 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:55:54,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:54,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:54,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:54,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:54,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:55:54,971 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:55:55,006 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2023-11-23 06:55:55,007 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2023-11-23 06:55:55,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,102 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,102 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,149 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:55:55,150 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:55:55,151 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:55:55,151 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:55:55,152 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:55:55,152 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:55:55,152 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:55:55,153 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:55:55,153 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:55:55,154 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:55:55,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,208 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8097] [2023-11-23 06:55:55,269 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,270 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:55:55,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8583-8594] [2023-11-23 06:55:55,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:55:55,889 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,892 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,892 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,892 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,904 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,904 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,904 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,904 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,904 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,905 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,905 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,906 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,906 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,906 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,907 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,907 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,907 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,907 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:55:55,914 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:55:55,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55 WrapperNode [2023-11-23 06:55:55,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:55:55,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:55:55,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:55:55,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:55:55,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,258 INFO L138 Inliner]: procedures = 691, calls = 2503, calls flagged for inlining = 57, calls inlined = 12, statements flattened = 1002 [2023-11-23 06:55:56,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:55:56,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:55:56,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:55:56,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:55:56,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,402 WARN L107 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-23 06:55:56,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:55:56,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:55:56,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:55:56,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:55:56,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (1/1) ... [2023-11-23 06:55:56,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:55:56,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:55:56,593 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 06:55:56,603 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 06:55:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:55:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:55:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:55:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:55:56,638 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:55:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 06:55:56,639 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:55:56,639 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:55:56,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:55:56,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:55:56,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:55:56,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:55:56,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 06:55:56,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:55:56,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:55:56,640 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:55:56,640 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:55:56,640 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2023-11-23 06:55:56,640 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2023-11-23 06:55:56,640 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 06:55:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 06:55:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:55:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:55:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:55:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 06:55:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 06:55:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 06:55:56,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 06:55:56,642 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:55:56,642 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:55:56,642 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 06:55:56,642 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 06:55:56,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 06:55:56,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 06:55:56,985 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:55:56,987 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:55:58,227 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:55:58,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:55:58,460 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-23 06:55:58,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:55:58 BoogieIcfgContainer [2023-11-23 06:55:58,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:55:58,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:55:58,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:55:58,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:55:58,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:55:52" (1/3) ... [2023-11-23 06:55:58,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c338ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:55:58, skipping insertion in model container [2023-11-23 06:55:58,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:55:55" (2/3) ... [2023-11-23 06:55:58,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c338ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:55:58, skipping insertion in model container [2023-11-23 06:55:58,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:55:58" (3/3) ... [2023-11-23 06:55:58,470 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2023-11-23 06:55:58,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:55:58,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:55:58,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:55:58,618 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;@63418fcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:55:58,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:55:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 95 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 06:55:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 06:55:58,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:55:58,656 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:55:58,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:55:58,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:55:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash -778588719, now seen corresponding path program 1 times [2023-11-23 06:55:58,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:55:58,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493449133] [2023-11-23 06:55:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:55:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:55:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:55:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:55:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:55:59,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:55:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:55:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:55:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:55:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:55:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:55:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 06:55:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:55:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:55:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:55:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:55:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:55:59,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493449133] [2023-11-23 06:55:59,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493449133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:55:59,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:55:59,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 06:55:59,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246106238] [2023-11-23 06:55:59,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:55:59,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:55:59,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:55:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:55:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:55:59,850 INFO L87 Difference]: Start difference. First operand has 145 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 95 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 06:56:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:00,406 INFO L93 Difference]: Finished difference Result 289 states and 424 transitions. [2023-11-23 06:56:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:56:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-11-23 06:56:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:00,422 INFO L225 Difference]: With dead ends: 289 [2023-11-23 06:56:00,422 INFO L226 Difference]: Without dead ends: 151 [2023-11-23 06:56:00,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:56:00,433 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 114 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:00,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 236 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:56:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-23 06:56:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2023-11-23 06:56:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 94 states have internal predecessors, (120), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 06:56:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 195 transitions. [2023-11-23 06:56:00,504 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 195 transitions. Word has length 39 [2023-11-23 06:56:00,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:00,505 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 195 transitions. [2023-11-23 06:56:00,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 06:56:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 195 transitions. [2023-11-23 06:56:00,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 06:56:00,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:00,509 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:56:00,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:56:00,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:00,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:00,511 INFO L85 PathProgramCache]: Analyzing trace with hash -413453679, now seen corresponding path program 1 times [2023-11-23 06:56:00,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:00,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001037177] [2023-11-23 06:56:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:00,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:01,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 06:56:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:56:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:56:01,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:01,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001037177] [2023-11-23 06:56:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001037177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:56:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:56:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849012926] [2023-11-23 06:56:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:01,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:56:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:01,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:56:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:56:01,289 INFO L87 Difference]: Start difference. First operand 143 states and 195 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-23 06:56:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:02,280 INFO L93 Difference]: Finished difference Result 283 states and 389 transitions. [2023-11-23 06:56:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:56:02,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2023-11-23 06:56:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:02,286 INFO L225 Difference]: With dead ends: 283 [2023-11-23 06:56:02,286 INFO L226 Difference]: Without dead ends: 153 [2023-11-23 06:56:02,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:56:02,290 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 188 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:02,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 422 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:56:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-23 06:56:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2023-11-23 06:56:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 96 states have internal predecessors, (121), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2023-11-23 06:56:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 202 transitions. [2023-11-23 06:56:02,344 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 202 transitions. Word has length 39 [2023-11-23 06:56:02,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:02,345 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 202 transitions. [2023-11-23 06:56:02,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-23 06:56:02,345 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 202 transitions. [2023-11-23 06:56:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 06:56:02,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:02,353 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:56:02,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 06:56:02,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:02,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash 886733990, now seen corresponding path program 1 times [2023-11-23 06:56:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:02,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732857423] [2023-11-23 06:56:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:02,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:02,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:56:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:56:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:56:02,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:02,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732857423] [2023-11-23 06:56:02,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732857423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:02,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:56:02,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 06:56:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502785299] [2023-11-23 06:56:02,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:02,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:56:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:56:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:56:02,996 INFO L87 Difference]: Start difference. First operand 145 states and 202 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 06:56:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:04,342 INFO L93 Difference]: Finished difference Result 191 states and 257 transitions. [2023-11-23 06:56:04,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:56:04,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2023-11-23 06:56:04,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:04,361 INFO L225 Difference]: With dead ends: 191 [2023-11-23 06:56:04,363 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 06:56:04,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:56:04,367 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 117 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:04,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 581 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 06:56:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 06:56:04,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 147. [2023-11-23 06:56:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 96 states have (on average 1.28125) internal successors, (123), 98 states have internal predecessors, (123), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2023-11-23 06:56:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 204 transitions. [2023-11-23 06:56:04,403 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 204 transitions. Word has length 45 [2023-11-23 06:56:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:04,408 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 204 transitions. [2023-11-23 06:56:04,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 06:56:04,409 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 204 transitions. [2023-11-23 06:56:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 06:56:04,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:04,412 INFO L195 NwaCegarLoop]: trace histogram [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 06:56:04,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 06:56:04,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:04,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash -978821000, now seen corresponding path program 1 times [2023-11-23 06:56:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:04,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586743917] [2023-11-23 06:56:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:05,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:05,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:56:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 06:56:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:05,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:56:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:56:05,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586743917] [2023-11-23 06:56:05,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586743917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11172281] [2023-11-23 06:56:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:05,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:05,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:05,688 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 06:56:05,711 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 06:56:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:06,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 06:56:06,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 06:56:06,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:06,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11172281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:06,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:06,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-11-23 06:56:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765422307] [2023-11-23 06:56:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:06,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:56:06,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:56:06,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:56:06,612 INFO L87 Difference]: Start difference. First operand 147 states and 204 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:56:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:07,011 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2023-11-23 06:56:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:56:07,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 52 [2023-11-23 06:56:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:07,013 INFO L225 Difference]: With dead ends: 187 [2023-11-23 06:56:07,013 INFO L226 Difference]: Without dead ends: 153 [2023-11-23 06:56:07,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:56:07,015 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 3 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:07,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 917 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:56:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-23 06:56:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2023-11-23 06:56:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 96 states have (on average 1.28125) internal successors, (123), 98 states have internal predecessors, (123), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2023-11-23 06:56:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 204 transitions. [2023-11-23 06:56:07,036 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 204 transitions. Word has length 52 [2023-11-23 06:56:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:07,038 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 204 transitions. [2023-11-23 06:56:07,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:56:07,038 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 204 transitions. [2023-11-23 06:56:07,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 06:56:07,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:07,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:07,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 06:56:07,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:07,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:07,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:07,259 INFO L85 PathProgramCache]: Analyzing trace with hash 697155161, now seen corresponding path program 1 times [2023-11-23 06:56:07,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:07,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977099760] [2023-11-23 06:56:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:56:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:56:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:56:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 06:56:08,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:08,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977099760] [2023-11-23 06:56:08,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977099760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:08,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:56:08,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:56:08,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303762450] [2023-11-23 06:56:08,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:08,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:56:08,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:08,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:56:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:56:08,805 INFO L87 Difference]: Start difference. First operand 147 states and 204 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:56:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:10,734 INFO L93 Difference]: Finished difference Result 165 states and 228 transitions. [2023-11-23 06:56:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:56:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2023-11-23 06:56:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:10,739 INFO L225 Difference]: With dead ends: 165 [2023-11-23 06:56:10,740 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 06:56:10,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:56:10,741 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 139 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:10,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 792 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 06:56:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 06:56:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2023-11-23 06:56:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 101 states have internal predecessors, (125), 38 states have call successors, (38), 11 states have call predecessors, (38), 13 states have return successors, (50), 37 states have call predecessors, (50), 37 states have call successors, (50) [2023-11-23 06:56:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 213 transitions. [2023-11-23 06:56:10,752 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 213 transitions. Word has length 56 [2023-11-23 06:56:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:10,752 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 213 transitions. [2023-11-23 06:56:10,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:56:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 213 transitions. [2023-11-23 06:56:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 06:56:10,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:10,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:10,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 06:56:10,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:10,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1916814737, now seen corresponding path program 1 times [2023-11-23 06:56:10,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:10,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130655952] [2023-11-23 06:56:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:11,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:56:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:56:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:56:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:56:11,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130655952] [2023-11-23 06:56:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130655952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:56:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:56:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778496340] [2023-11-23 06:56:11,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:11,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:56:11,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:11,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:56:11,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:56:11,549 INFO L87 Difference]: Start difference. First operand 150 states and 213 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:56:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:12,419 INFO L93 Difference]: Finished difference Result 318 states and 466 transitions. [2023-11-23 06:56:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:56:12,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2023-11-23 06:56:12,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:12,422 INFO L225 Difference]: With dead ends: 318 [2023-11-23 06:56:12,422 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 06:56:12,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:56:12,424 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 191 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:12,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 498 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:56:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 06:56:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 155. [2023-11-23 06:56:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 106 states have internal predecessors, (132), 38 states have call successors, (38), 11 states have call predecessors, (38), 13 states have return successors, (50), 37 states have call predecessors, (50), 37 states have call successors, (50) [2023-11-23 06:56:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 220 transitions. [2023-11-23 06:56:12,435 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 220 transitions. Word has length 60 [2023-11-23 06:56:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:12,436 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 220 transitions. [2023-11-23 06:56:12,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:56:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 220 transitions. [2023-11-23 06:56:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 06:56:12,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:12,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:12,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 06:56:12,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:12,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:12,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1677087981, now seen corresponding path program 1 times [2023-11-23 06:56:12,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:12,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090013327] [2023-11-23 06:56:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:12,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:56:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:56:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:56:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 06:56:14,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:14,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090013327] [2023-11-23 06:56:14,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090013327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:14,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595658528] [2023-11-23 06:56:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:14,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:14,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:14,647 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 06:56:14,665 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 06:56:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:15,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 06:56:15,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:15,287 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 06:56:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:56:15,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595658528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:15,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:15,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 25 [2023-11-23 06:56:15,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141781465] [2023-11-23 06:56:15,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:15,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:56:15,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:15,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:56:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:56:15,635 INFO L87 Difference]: Start difference. First operand 155 states and 220 transitions. Second operand has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 06:56:18,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:20,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:22,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:25,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:27,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:29,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:31,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:34,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:36,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:38,341 WARN L539 Checker$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 06:56:40,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:42,490 WARN L539 Checker$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 06:56:44,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:46,585 WARN L539 Checker$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 06:56:48,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:50,701 WARN L539 Checker$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 06:56:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:50,722 INFO L93 Difference]: Finished difference Result 419 states and 590 transitions. [2023-11-23 06:56:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:56:50,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 60 [2023-11-23 06:56:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:50,746 INFO L225 Difference]: With dead ends: 419 [2023-11-23 06:56:50,746 INFO L226 Difference]: Without dead ends: 277 [2023-11-23 06:56:50,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2023-11-23 06:56:50,748 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 196 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 15 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:50,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1647 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 737 Invalid, 17 Unknown, 0 Unchecked, 34.9s Time] [2023-11-23 06:56:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-23 06:56:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 266. [2023-11-23 06:56:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 181 states have (on average 1.298342541436464) internal successors, (235), 186 states have internal predecessors, (235), 62 states have call successors, (62), 19 states have call predecessors, (62), 22 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2023-11-23 06:56:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 369 transitions. [2023-11-23 06:56:50,790 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 369 transitions. Word has length 60 [2023-11-23 06:56:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:50,790 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 369 transitions. [2023-11-23 06:56:50,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 06:56:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 369 transitions. [2023-11-23 06:56:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 06:56:50,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:50,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:50,840 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 06:56:51,012 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,SelfDestructingSolverStorable6 [2023-11-23 06:56:51,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:51,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash -849958759, now seen corresponding path program 1 times [2023-11-23 06:56:51,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:51,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465504339] [2023-11-23 06:56:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:51,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:52,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:56:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:56:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:56:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 06:56:52,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:52,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465504339] [2023-11-23 06:56:52,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465504339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:52,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488920628] [2023-11-23 06:56:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:52,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:52,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:52,516 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 06:56:52,567 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 06:56:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:53,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:56:53,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:56:53,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:53,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488920628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:53,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:53,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2023-11-23 06:56:53,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071601605] [2023-11-23 06:56:53,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:53,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:56:53,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:53,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:56:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:56:53,047 INFO L87 Difference]: Start difference. First operand 266 states and 369 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 06:56:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:53,629 INFO L93 Difference]: Finished difference Result 531 states and 751 transitions. [2023-11-23 06:56:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:56:53,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2023-11-23 06:56:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:53,634 INFO L225 Difference]: With dead ends: 531 [2023-11-23 06:56:53,634 INFO L226 Difference]: Without dead ends: 278 [2023-11-23 06:56:53,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:56:53,636 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 13 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:53,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1361 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:56:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-23 06:56:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2023-11-23 06:56:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 184 states have (on average 1.2934782608695652) internal successors, (238), 190 states have internal predecessors, (238), 62 states have call successors, (62), 19 states have call predecessors, (62), 23 states have return successors, (78), 60 states have call predecessors, (78), 60 states have call successors, (78) [2023-11-23 06:56:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 378 transitions. [2023-11-23 06:56:53,685 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 378 transitions. Word has length 64 [2023-11-23 06:56:53,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:53,686 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 378 transitions. [2023-11-23 06:56:53,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 06:56:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 378 transitions. [2023-11-23 06:56:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 06:56:53,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:53,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:53,707 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 06:56:53,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:53,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:53,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash -975669026, now seen corresponding path program 1 times [2023-11-23 06:56:53,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:53,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624353715] [2023-11-23 06:56:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:53,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:56:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:56:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:56:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 06:56:54,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:54,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624353715] [2023-11-23 06:56:54,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624353715] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353275731] [2023-11-23 06:56:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:54,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:54,316 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 06:56:54,408 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 06:56:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:54,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:56:54,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:56:54,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353275731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:54,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:54,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 06:56:54,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547194720] [2023-11-23 06:56:54,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:54,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:56:54,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:56:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:56:54,914 INFO L87 Difference]: Start difference. First operand 270 states and 378 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 06:56:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:55,179 INFO L93 Difference]: Finished difference Result 540 states and 766 transitions. [2023-11-23 06:56:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:56:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-11-23 06:56:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:55,182 INFO L225 Difference]: With dead ends: 540 [2023-11-23 06:56:55,182 INFO L226 Difference]: Without dead ends: 283 [2023-11-23 06:56:55,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:56:55,185 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 9 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:55,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 541 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:56:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-23 06:56:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 274. [2023-11-23 06:56:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 188 states have (on average 1.2872340425531914) internal successors, (242), 194 states have internal predecessors, (242), 62 states have call successors, (62), 19 states have call predecessors, (62), 23 states have return successors, (78), 60 states have call predecessors, (78), 60 states have call successors, (78) [2023-11-23 06:56:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 382 transitions. [2023-11-23 06:56:55,202 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 382 transitions. Word has length 66 [2023-11-23 06:56:55,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:55,203 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 382 transitions. [2023-11-23 06:56:55,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 06:56:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 382 transitions. [2023-11-23 06:56:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 06:56:55,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:55,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:55,226 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 06:56:55,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:55,423 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:55,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:55,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1576903902, now seen corresponding path program 1 times [2023-11-23 06:56:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086054643] [2023-11-23 06:56:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:56:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:56:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:56:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 06:56:55,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:55,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086054643] [2023-11-23 06:56:55,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086054643] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:55,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478293734] [2023-11-23 06:56:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:55,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:55,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:55,924 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 06:56:55,965 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 06:56:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:56:56,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 06:56:56,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:56,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478293734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:56,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:56,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 06:56:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163562148] [2023-11-23 06:56:56,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:56,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:56:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:56:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:56:56,398 INFO L87 Difference]: Start difference. First operand 274 states and 382 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 06:56:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:56,684 INFO L93 Difference]: Finished difference Result 569 states and 811 transitions. [2023-11-23 06:56:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:56:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-11-23 06:56:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:56,687 INFO L225 Difference]: With dead ends: 569 [2023-11-23 06:56:56,687 INFO L226 Difference]: Without dead ends: 308 [2023-11-23 06:56:56,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:56:56,689 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 28 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:56,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 555 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:56:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-23 06:56:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 274. [2023-11-23 06:56:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 188 states have (on average 1.2765957446808511) internal successors, (240), 194 states have internal predecessors, (240), 62 states have call successors, (62), 19 states have call predecessors, (62), 23 states have return successors, (78), 60 states have call predecessors, (78), 60 states have call successors, (78) [2023-11-23 06:56:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 380 transitions. [2023-11-23 06:56:56,709 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 380 transitions. Word has length 66 [2023-11-23 06:56:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:56,709 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 380 transitions. [2023-11-23 06:56:56,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 06:56:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 380 transitions. [2023-11-23 06:56:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 06:56:56,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:56,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:56,735 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 06:56:56,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 06:56:56,933 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:56,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:56,933 INFO L85 PathProgramCache]: Analyzing trace with hash -683417564, now seen corresponding path program 1 times [2023-11-23 06:56:56,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:56,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584454504] [2023-11-23 06:56:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:56,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:59,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:56:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:56:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:59,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:56:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:59,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:56:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:57:00,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584454504] [2023-11-23 06:57:00,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584454504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:00,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146685824] [2023-11-23 06:57:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:00,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:00,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:00,204 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 06:57:00,251 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 06:57:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 06:57:01,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:57:02,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:57:02,477 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:57:02,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-23 06:57:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:57:02,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146685824] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:57:02,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:57:02,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 26 [2023-11-23 06:57:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216773121] [2023-11-23 06:57:02,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:57:02,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 06:57:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 06:57:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:57:02,511 INFO L87 Difference]: Start difference. First operand 274 states and 380 transitions. Second operand has 26 states, 26 states have (on average 4.115384615384615) internal successors, (107), 24 states have internal predecessors, (107), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 06:57:06,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:08,753 WARN L539 Checker$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 06:57:10,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:14,072 WARN L539 Checker$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 06:57:17,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:19,716 WARN L539 Checker$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 06:57:21,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:23,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:25,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:27,986 WARN L539 Checker$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 06:57:30,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:32,178 WARN L539 Checker$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 06:57:34,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:36,495 WARN L539 Checker$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 06:57:38,630 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 06:57:38,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:38,744 INFO L93 Difference]: Finished difference Result 386 states and 523 transitions. [2023-11-23 06:57:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 06:57:38,746 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.115384615384615) internal successors, (107), 24 states have internal predecessors, (107), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 66 [2023-11-23 06:57:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:38,747 INFO L225 Difference]: With dead ends: 386 [2023-11-23 06:57:38,747 INFO L226 Difference]: Without dead ends: 337 [2023-11-23 06:57:38,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=313, Invalid=1409, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 06:57:38,749 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 455 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 3536 mSolverCounterSat, 165 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 3716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3536 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:38,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1557 Invalid, 3716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3536 Invalid, 15 Unknown, 0 Unchecked, 35.6s Time] [2023-11-23 06:57:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-23 06:57:38,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 311. [2023-11-23 06:57:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 220 states have (on average 1.240909090909091) internal successors, (273), 227 states have internal predecessors, (273), 64 states have call successors, (64), 22 states have call predecessors, (64), 26 states have return successors, (86), 61 states have call predecessors, (86), 61 states have call successors, (86) [2023-11-23 06:57:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 423 transitions. [2023-11-23 06:57:38,837 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 423 transitions. Word has length 66 [2023-11-23 06:57:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:38,837 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 423 transitions. [2023-11-23 06:57:38,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.115384615384615) internal successors, (107), 24 states have internal predecessors, (107), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 06:57:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 423 transitions. [2023-11-23 06:57:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 06:57:38,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:38,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:38,860 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 06:57:39,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:39,060 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:39,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:39,061 INFO L85 PathProgramCache]: Analyzing trace with hash 878299550, now seen corresponding path program 1 times [2023-11-23 06:57:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:39,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427542465] [2023-11-23 06:57:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:39,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:40,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:57:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:40,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:57:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:57:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:57:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:57:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 06:57:41,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:41,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427542465] [2023-11-23 06:57:41,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427542465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:41,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064850600] [2023-11-23 06:57:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:41,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:41,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:41,141 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 06:57:41,204 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 06:57:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:42,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 06:57:42,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:57:43,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:57:43,468 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 06:57:43,558 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:57:43,558 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 31 treesize of output 26 [2023-11-23 06:57:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:57:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064850600] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:57:43,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:57:43,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 21 [2023-11-23 06:57:43,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939776285] [2023-11-23 06:57:43,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:57:43,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 06:57:43,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 06:57:43,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:57:43,604 INFO L87 Difference]: Start difference. First operand 311 states and 423 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 06:57:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:48,289 INFO L93 Difference]: Finished difference Result 449 states and 598 transitions. [2023-11-23 06:57:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 06:57:48,290 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 66 [2023-11-23 06:57:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:48,298 INFO L225 Difference]: With dead ends: 449 [2023-11-23 06:57:48,298 INFO L226 Difference]: Without dead ends: 432 [2023-11-23 06:57:48,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 128 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=402, Invalid=1404, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 06:57:48,304 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 447 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:48,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1102 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 06:57:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-23 06:57:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 382. [2023-11-23 06:57:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 280 states have (on average 1.2285714285714286) internal successors, (344), 289 states have internal predecessors, (344), 69 states have call successors, (69), 26 states have call predecessors, (69), 32 states have return successors, (95), 66 states have call predecessors, (95), 66 states have call successors, (95) [2023-11-23 06:57:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 508 transitions. [2023-11-23 06:57:48,410 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 508 transitions. Word has length 66 [2023-11-23 06:57:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:48,410 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 508 transitions. [2023-11-23 06:57:48,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 19 states have internal predecessors, (83), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 06:57:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 508 transitions. [2023-11-23 06:57:48,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 06:57:48,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:48,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:48,460 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 06:57:48,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:48,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:48,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1579364128, now seen corresponding path program 1 times [2023-11-23 06:57:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:48,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636698477] [2023-11-23 06:57:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:57:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:57:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:57:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:57:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:57:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 06:57:49,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:49,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636698477] [2023-11-23 06:57:49,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636698477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:49,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:57:49,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:57:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898578612] [2023-11-23 06:57:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:49,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:57:49,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:49,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:57:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:57:49,667 INFO L87 Difference]: Start difference. First operand 382 states and 508 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:57:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:50,718 INFO L93 Difference]: Finished difference Result 714 states and 974 transitions. [2023-11-23 06:57:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:57:50,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2023-11-23 06:57:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:50,721 INFO L225 Difference]: With dead ends: 714 [2023-11-23 06:57:50,721 INFO L226 Difference]: Without dead ends: 397 [2023-11-23 06:57:50,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:57:50,723 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 154 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:50,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 416 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:57:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-23 06:57:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 376. [2023-11-23 06:57:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 274 states have (on average 1.218978102189781) internal successors, (334), 283 states have internal predecessors, (334), 69 states have call successors, (69), 26 states have call predecessors, (69), 32 states have return successors, (95), 66 states have call predecessors, (95), 66 states have call successors, (95) [2023-11-23 06:57:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 498 transitions. [2023-11-23 06:57:50,793 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 498 transitions. Word has length 66 [2023-11-23 06:57:50,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:50,794 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 498 transitions. [2023-11-23 06:57:50,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:57:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 498 transitions. [2023-11-23 06:57:50,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 06:57:50,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:50,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:50,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 06:57:50,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:50,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash -967067616, now seen corresponding path program 1 times [2023-11-23 06:57:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285470182] [2023-11-23 06:57:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:54,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:57:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:57:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:57:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:57:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:57:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:57:55,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:55,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285470182] [2023-11-23 06:57:55,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285470182] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:55,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904543910] [2023-11-23 06:57:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:55,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:55,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:55,220 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 06:57:55,249 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 06:57:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 06:57:57,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:57,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:57:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 06:57:58,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:58:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:58:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904543910] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:58:00,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:58:00,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 13] total 38 [2023-11-23 06:58:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572083391] [2023-11-23 06:58:00,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:58:00,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 06:58:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:00,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 06:58:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 06:58:00,004 INFO L87 Difference]: Start difference. First operand 376 states and 498 transitions. Second operand has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 36 states have internal predecessors, (124), 6 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 06:58:03,912 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 06:58:06,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:08,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:13,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:18,537 WARN L539 Checker$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 06:58:20,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:22,674 WARN L539 Checker$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 06:58:24,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:26,744 WARN L539 Checker$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 06:58:29,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:31,444 WARN L539 Checker$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 06:58:33,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:35,883 WARN L539 Checker$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 06:58:37,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:40,198 WARN L539 Checker$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 06:58:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:40,437 INFO L93 Difference]: Finished difference Result 442 states and 590 transitions. [2023-11-23 06:58:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-23 06:58:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 36 states have internal predecessors, (124), 6 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 66 [2023-11-23 06:58:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:40,440 INFO L225 Difference]: With dead ends: 442 [2023-11-23 06:58:40,440 INFO L226 Difference]: Without dead ends: 430 [2023-11-23 06:58:40,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1084, Invalid=4616, Unknown=0, NotChecked=0, Total=5700 [2023-11-23 06:58:40,442 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 596 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 4611 mSolverCounterSat, 185 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 4811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 4611 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:40,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1804 Invalid, 4811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 4611 Invalid, 15 Unknown, 0 Unchecked, 37.8s Time] [2023-11-23 06:58:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-23 06:58:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 383. [2023-11-23 06:58:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 281 states have (on average 1.2135231316725978) internal successors, (341), 290 states have internal predecessors, (341), 69 states have call successors, (69), 26 states have call predecessors, (69), 32 states have return successors, (95), 66 states have call predecessors, (95), 66 states have call successors, (95) [2023-11-23 06:58:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 505 transitions. [2023-11-23 06:58:40,486 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 505 transitions. Word has length 66 [2023-11-23 06:58:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:40,487 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 505 transitions. [2023-11-23 06:58:40,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 36 states have internal predecessors, (124), 6 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 06:58:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 505 transitions. [2023-11-23 06:58:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 06:58:40,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:40,489 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:58:40,510 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 06:58:40,695 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,SelfDestructingSolverStorable13 [2023-11-23 06:58:40,696 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:40,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2104045123, now seen corresponding path program 1 times [2023-11-23 06:58:40,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:40,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748268935] [2023-11-23 06:58:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:40,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:58:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:58:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:58:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:58:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:58:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 06:58:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748268935] [2023-11-23 06:58:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748268935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025366822] [2023-11-23 06:58:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:41,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:41,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:41,515 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 06:58:41,516 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 06:58:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:58:41,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:58:42,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025366822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:42,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-11-23 06:58:42,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146884450] [2023-11-23 06:58:42,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:42,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:58:42,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:42,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:58:42,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:58:42,088 INFO L87 Difference]: Start difference. First operand 383 states and 505 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 06:58:42,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:42,419 INFO L93 Difference]: Finished difference Result 697 states and 928 transitions. [2023-11-23 06:58:42,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:58:42,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 69 [2023-11-23 06:58:42,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:42,422 INFO L225 Difference]: With dead ends: 697 [2023-11-23 06:58:42,422 INFO L226 Difference]: Without dead ends: 387 [2023-11-23 06:58:42,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:58:42,432 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 114 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:42,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 543 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:58:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-23 06:58:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-11-23 06:58:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 283 states have (on average 1.2084805653710247) internal successors, (342), 294 states have internal predecessors, (342), 69 states have call successors, (69), 26 states have call predecessors, (69), 34 states have return successors, (102), 66 states have call predecessors, (102), 66 states have call successors, (102) [2023-11-23 06:58:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 513 transitions. [2023-11-23 06:58:42,480 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 513 transitions. Word has length 69 [2023-11-23 06:58:42,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:42,481 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 513 transitions. [2023-11-23 06:58:42,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 06:58:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 513 transitions. [2023-11-23 06:58:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 06:58:42,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:42,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:42,526 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 06:58:42,719 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,SelfDestructingSolverStorable14 [2023-11-23 06:58:42,719 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:42,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1165912185, now seen corresponding path program 1 times [2023-11-23 06:58:42,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:42,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761568293] [2023-11-23 06:58:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:42,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:58:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:58:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:58:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:58:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 06:58:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:43,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761568293] [2023-11-23 06:58:43,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761568293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:43,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:43,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 06:58:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519227364] [2023-11-23 06:58:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:43,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:58:43,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:58:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:58:43,858 INFO L87 Difference]: Start difference. First operand 387 states and 513 transitions. Second operand has 12 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:58:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:45,156 INFO L93 Difference]: Finished difference Result 413 states and 543 transitions. [2023-11-23 06:58:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:58:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2023-11-23 06:58:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:45,160 INFO L225 Difference]: With dead ends: 413 [2023-11-23 06:58:45,160 INFO L226 Difference]: Without dead ends: 385 [2023-11-23 06:58:45,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:58:45,161 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 155 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:45,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 976 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:58:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-23 06:58:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 364. [2023-11-23 06:58:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 265 states have (on average 1.2150943396226415) internal successors, (322), 274 states have internal predecessors, (322), 66 states have call successors, (66), 25 states have call predecessors, (66), 32 states have return successors, (91), 64 states have call predecessors, (91), 63 states have call successors, (91) [2023-11-23 06:58:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 479 transitions. [2023-11-23 06:58:45,254 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 479 transitions. Word has length 68 [2023-11-23 06:58:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:45,254 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 479 transitions. [2023-11-23 06:58:45,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:58:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 479 transitions. [2023-11-23 06:58:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 06:58:45,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:45,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:45,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 06:58:45,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:45,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1196531897, now seen corresponding path program 1 times [2023-11-23 06:58:45,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:45,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066369764] [2023-11-23 06:58:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:45,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:58:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:58:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:58:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:58:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:58:47,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:47,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066369764] [2023-11-23 06:58:47,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066369764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:47,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:47,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 06:58:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293418273] [2023-11-23 06:58:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:47,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 06:58:47,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 06:58:47,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:58:47,658 INFO L87 Difference]: Start difference. First operand 364 states and 479 transitions. Second operand has 17 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 06:58:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:49,626 INFO L93 Difference]: Finished difference Result 395 states and 519 transitions. [2023-11-23 06:58:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 06:58:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2023-11-23 06:58:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:49,628 INFO L225 Difference]: With dead ends: 395 [2023-11-23 06:58:49,629 INFO L226 Difference]: Without dead ends: 371 [2023-11-23 06:58:49,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2023-11-23 06:58:49,630 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 175 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:49,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1209 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 06:58:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-23 06:58:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 339. [2023-11-23 06:58:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 245 states have (on average 1.2244897959183674) internal successors, (300), 254 states have internal predecessors, (300), 63 states have call successors, (63), 23 states have call predecessors, (63), 30 states have return successors, (87), 61 states have call predecessors, (87), 60 states have call successors, (87) [2023-11-23 06:58:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 450 transitions. [2023-11-23 06:58:49,663 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 450 transitions. Word has length 68 [2023-11-23 06:58:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:49,664 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 450 transitions. [2023-11-23 06:58:49,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 06:58:49,664 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 450 transitions. [2023-11-23 06:58:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 06:58:49,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:49,665 INFO L195 NwaCegarLoop]: trace histogram [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 06:58:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 06:58:49,666 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:49,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1563645037, now seen corresponding path program 1 times [2023-11-23 06:58:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372613687] [2023-11-23 06:58:49,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:49,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:58:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:58:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:58:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:58:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:58:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 06:58:49,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:49,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372613687] [2023-11-23 06:58:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372613687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:49,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:58:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038280050] [2023-11-23 06:58:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:49,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:58:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:58:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:58:49,980 INFO L87 Difference]: Start difference. First operand 339 states and 450 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 06:58:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:51,111 INFO L93 Difference]: Finished difference Result 460 states and 592 transitions. [2023-11-23 06:58:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:58:51,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2023-11-23 06:58:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:51,127 INFO L225 Difference]: With dead ends: 460 [2023-11-23 06:58:51,128 INFO L226 Difference]: Without dead ends: 363 [2023-11-23 06:58:51,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:58:51,131 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 74 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:51,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 645 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:58:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-23 06:58:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 341. [2023-11-23 06:58:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 247 states have (on average 1.222672064777328) internal successors, (302), 256 states have internal predecessors, (302), 63 states have call successors, (63), 23 states have call predecessors, (63), 30 states have return successors, (87), 61 states have call predecessors, (87), 60 states have call successors, (87) [2023-11-23 06:58:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 452 transitions. [2023-11-23 06:58:51,199 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 452 transitions. Word has length 79 [2023-11-23 06:58:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:51,199 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 452 transitions. [2023-11-23 06:58:51,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 06:58:51,200 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 452 transitions. [2023-11-23 06:58:51,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 06:58:51,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:51,216 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-23 06:58:51,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 06:58:51,217 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:51,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1889475239, now seen corresponding path program 1 times [2023-11-23 06:58:51,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339615648] [2023-11-23 06:58:51,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:51,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:58:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:58:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:58:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:58:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:58:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 06:58:51,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:51,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339615648] [2023-11-23 06:58:51,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339615648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:51,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:51,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:58:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002509343] [2023-11-23 06:58:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:51,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:58:51,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:58:51,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:58:51,569 INFO L87 Difference]: Start difference. First operand 341 states and 452 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 06:58:52,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:52,330 INFO L93 Difference]: Finished difference Result 396 states and 511 transitions. [2023-11-23 06:58:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:58:52,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2023-11-23 06:58:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:52,333 INFO L225 Difference]: With dead ends: 396 [2023-11-23 06:58:52,333 INFO L226 Difference]: Without dead ends: 346 [2023-11-23 06:58:52,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:58:52,334 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 102 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:52,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 435 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:58:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-23 06:58:52,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 336. [2023-11-23 06:58:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 245 states have (on average 1.220408163265306) internal successors, (299), 253 states have internal predecessors, (299), 61 states have call successors, (61), 23 states have call predecessors, (61), 29 states have return successors, (79), 59 states have call predecessors, (79), 58 states have call successors, (79) [2023-11-23 06:58:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 439 transitions. [2023-11-23 06:58:52,379 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 439 transitions. Word has length 81 [2023-11-23 06:58:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:52,379 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 439 transitions. [2023-11-23 06:58:52,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 06:58:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 439 transitions. [2023-11-23 06:58:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 06:58:52,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:52,381 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-23 06:58:52,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 06:58:52,381 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:52,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash 432545499, now seen corresponding path program 1 times [2023-11-23 06:58:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:52,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826295562] [2023-11-23 06:58:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:58:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:58:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:58:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:58:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:58:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:58:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 06:58:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:53,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826295562] [2023-11-23 06:58:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826295562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:53,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:58:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061940007] [2023-11-23 06:58:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:53,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:58:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:58:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:58:53,416 INFO L87 Difference]: Start difference. First operand 336 states and 439 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 06:58:55,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:55,034 INFO L93 Difference]: Finished difference Result 361 states and 471 transitions. [2023-11-23 06:58:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:58:55,035 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 85 [2023-11-23 06:58:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:55,037 INFO L225 Difference]: With dead ends: 361 [2023-11-23 06:58:55,037 INFO L226 Difference]: Without dead ends: 359 [2023-11-23 06:58:55,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:58:55,038 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 88 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:55,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 767 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 06:58:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-23 06:58:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2023-11-23 06:58:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 250 states have (on average 1.216) internal successors, (304), 259 states have internal predecessors, (304), 62 states have call successors, (62), 24 states have call predecessors, (62), 31 states have return successors, (85), 60 states have call predecessors, (85), 59 states have call successors, (85) [2023-11-23 06:58:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 451 transitions. [2023-11-23 06:58:55,095 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 451 transitions. Word has length 85 [2023-11-23 06:58:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:55,096 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 451 transitions. [2023-11-23 06:58:55,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 06:58:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 451 transitions. [2023-11-23 06:58:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 06:58:55,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:55,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:55,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 06:58:55,098 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:55,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 804361931, now seen corresponding path program 1 times [2023-11-23 06:58:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:55,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541578502] [2023-11-23 06:58:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:55,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:58:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:58:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:58:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:58:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:58:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:58:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 06:58:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:55,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541578502] [2023-11-23 06:58:55,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541578502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:55,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979342960] [2023-11-23 06:58:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:55,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:55,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:55,885 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 06:58:55,887 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 06:58:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:56,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:58:56,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 06:58:56,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:56,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979342960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:56,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:56,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-11-23 06:58:56,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023056644] [2023-11-23 06:58:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:56,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:58:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:58:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:58:56,442 INFO L87 Difference]: Start difference. First operand 344 states and 451 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 06:58:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:56,939 INFO L93 Difference]: Finished difference Result 463 states and 589 transitions. [2023-11-23 06:58:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:58:56,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 86 [2023-11-23 06:58:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:56,942 INFO L225 Difference]: With dead ends: 463 [2023-11-23 06:58:56,942 INFO L226 Difference]: Without dead ends: 365 [2023-11-23 06:58:56,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-11-23 06:58:56,945 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 9 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:56,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1050 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:58:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-23 06:58:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 344. [2023-11-23 06:58:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 250 states have (on average 1.216) internal successors, (304), 259 states have internal predecessors, (304), 62 states have call successors, (62), 24 states have call predecessors, (62), 31 states have return successors, (85), 60 states have call predecessors, (85), 59 states have call successors, (85) [2023-11-23 06:58:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 451 transitions. [2023-11-23 06:58:56,978 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 451 transitions. Word has length 86 [2023-11-23 06:58:56,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:56,979 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 451 transitions. [2023-11-23 06:58:56,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 06:58:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 451 transitions. [2023-11-23 06:58:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-23 06:58:56,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:56,981 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:57,003 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 06:58:57,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-23 06:58:57,201 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:57,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1843537205, now seen corresponding path program 1 times [2023-11-23 06:58:57,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:57,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685668223] [2023-11-23 06:58:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:57,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:58:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:57,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:58:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:57,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:58:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:58:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:58:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:58:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 06:58:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685668223] [2023-11-23 06:58:58,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685668223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:58,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542834703] [2023-11-23 06:58:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:58,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:58,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:58,046 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 06:58:58,064 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 06:58:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:58,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 2627 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 06:58:58,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 06:58:58,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:58,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542834703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:58,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:58,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2023-11-23 06:58:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550776518] [2023-11-23 06:58:58,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:58,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:58:58,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:58,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:58:58,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-11-23 06:58:58,665 INFO L87 Difference]: Start difference. First operand 344 states and 451 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 06:58:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:59,090 INFO L93 Difference]: Finished difference Result 578 states and 762 transitions. [2023-11-23 06:58:59,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:58:59,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 87 [2023-11-23 06:58:59,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:59,093 INFO L225 Difference]: With dead ends: 578 [2023-11-23 06:58:59,093 INFO L226 Difference]: Without dead ends: 342 [2023-11-23 06:58:59,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:58:59,094 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 129 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:59,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 783 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:58:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-23 06:58:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-11-23 06:58:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 249 states have (on average 1.2088353413654618) internal successors, (301), 257 states have internal predecessors, (301), 62 states have call successors, (62), 24 states have call predecessors, (62), 30 states have return successors, (82), 60 states have call predecessors, (82), 59 states have call successors, (82) [2023-11-23 06:58:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 445 transitions. [2023-11-23 06:58:59,128 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 445 transitions. Word has length 87 [2023-11-23 06:58:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:59,128 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 445 transitions. [2023-11-23 06:58:59,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 06:58:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 445 transitions. [2023-11-23 06:58:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-23 06:58:59,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:59,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-23 06:58:59,156 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 06:58:59,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-23 06:58:59,350 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:59,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1831437675, now seen corresponding path program 1 times [2023-11-23 06:58:59,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:59,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425282004] [2023-11-23 06:58:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:59,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:59:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:59:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:59:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:59:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:59:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:59:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 06:59:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425282004] [2023-11-23 06:59:00,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425282004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:00,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:59:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:59:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625569441] [2023-11-23 06:59:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:00,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:59:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:59:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:59:00,570 INFO L87 Difference]: Start difference. First operand 342 states and 445 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 06:59:01,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:01,771 INFO L93 Difference]: Finished difference Result 658 states and 863 transitions. [2023-11-23 06:59:01,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:59:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 89 [2023-11-23 06:59:01,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:01,775 INFO L225 Difference]: With dead ends: 658 [2023-11-23 06:59:01,775 INFO L226 Difference]: Without dead ends: 350 [2023-11-23 06:59:01,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:59:01,777 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 167 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:01,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 504 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:59:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-23 06:59:01,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2023-11-23 06:59:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 249 states have (on average 1.2048192771084338) internal successors, (300), 257 states have internal predecessors, (300), 62 states have call successors, (62), 24 states have call predecessors, (62), 30 states have return successors, (82), 60 states have call predecessors, (82), 59 states have call successors, (82) [2023-11-23 06:59:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 444 transitions. [2023-11-23 06:59:01,810 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 444 transitions. Word has length 89 [2023-11-23 06:59:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:01,810 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 444 transitions. [2023-11-23 06:59:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 06:59:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 444 transitions. [2023-11-23 06:59:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 06:59:01,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:01,812 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:01,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 06:59:01,813 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:01,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash 85859888, now seen corresponding path program 1 times [2023-11-23 06:59:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:01,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911459838] [2023-11-23 06:59:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:59:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:59:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:59:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:59:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:59:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:59:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:59:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 06:59:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911459838] [2023-11-23 06:59:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911459838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744975175] [2023-11-23 06:59:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:03,907 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 06:59:03,924 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 06:59:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:04,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 06:59:04,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:04,759 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 06:59:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:59:05,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744975175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:05,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 26 [2023-11-23 06:59:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631897179] [2023-11-23 06:59:05,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:05,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:59:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:05,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:59:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:59:05,570 INFO L87 Difference]: Start difference. First operand 342 states and 444 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 06:59:09,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:11,283 WARN L539 Checker$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 06:59:13,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:15,648 WARN L539 Checker$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 06:59:18,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:20,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:22,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:24,709 WARN L539 Checker$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 06:59:26,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:28,864 WARN L539 Checker$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 06:59:30,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:33,004 WARN L539 Checker$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 06:59:35,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:37,144 WARN L539 Checker$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 06:59:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:37,207 INFO L93 Difference]: Finished difference Result 617 states and 806 transitions. [2023-11-23 06:59:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:59:37,208 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 93 [2023-11-23 06:59:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:37,210 INFO L225 Difference]: With dead ends: 617 [2023-11-23 06:59:37,210 INFO L226 Difference]: Without dead ends: 345 [2023-11-23 06:59:37,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2023-11-23 06:59:37,211 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 169 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 7 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:37,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 2015 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 937 Invalid, 15 Unknown, 0 Unchecked, 31.4s Time] [2023-11-23 06:59:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-23 06:59:37,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2023-11-23 06:59:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 249 states have (on average 1.1967871485943775) internal successors, (298), 257 states have internal predecessors, (298), 62 states have call successors, (62), 24 states have call predecessors, (62), 30 states have return successors, (81), 60 states have call predecessors, (81), 59 states have call successors, (81) [2023-11-23 06:59:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 441 transitions. [2023-11-23 06:59:37,294 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 441 transitions. Word has length 93 [2023-11-23 06:59:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:37,296 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 441 transitions. [2023-11-23 06:59:37,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 06:59:37,297 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 441 transitions. [2023-11-23 06:59:37,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 06:59:37,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:37,298 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-23 06:59:37,347 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 06:59:37,515 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,SelfDestructingSolverStorable23 [2023-11-23 06:59:37,515 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:37,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1800242026, now seen corresponding path program 1 times [2023-11-23 06:59:37,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:37,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643178165] [2023-11-23 06:59:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:37,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:59:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:59:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:59:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:59:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:59:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:59:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:59:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 06:59:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643178165] [2023-11-23 06:59:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643178165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060831312] [2023-11-23 06:59:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:38,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:38,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:38,416 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 06:59:38,472 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 06:59:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:39,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 2627 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:59:39,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 06:59:39,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060831312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 11 [2023-11-23 06:59:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081262374] [2023-11-23 06:59:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:39,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:59:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:59:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:59:39,286 INFO L87 Difference]: Start difference. First operand 342 states and 441 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:59:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:40,031 INFO L93 Difference]: Finished difference Result 623 states and 819 transitions. [2023-11-23 06:59:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:59:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2023-11-23 06:59:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:40,035 INFO L225 Difference]: With dead ends: 623 [2023-11-23 06:59:40,035 INFO L226 Difference]: Without dead ends: 343 [2023-11-23 06:59:40,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:59:40,038 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 11 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:40,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1050 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:59:40,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-23 06:59:40,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2023-11-23 06:59:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 245 states have (on average 1.1877551020408164) internal successors, (291), 254 states have internal predecessors, (291), 62 states have call successors, (62), 24 states have call predecessors, (62), 31 states have return successors, (86), 60 states have call predecessors, (86), 59 states have call successors, (86) [2023-11-23 06:59:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 439 transitions. [2023-11-23 06:59:40,227 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 439 transitions. Word has length 97 [2023-11-23 06:59:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:40,227 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 439 transitions. [2023-11-23 06:59:40,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:59:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 439 transitions. [2023-11-23 06:59:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 06:59:40,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:40,229 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:40,267 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 06:59:40,442 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,SelfDestructingSolverStorable24 [2023-11-23 06:59:40,443 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:40,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:40,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1644408769, now seen corresponding path program 2 times [2023-11-23 06:59:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:40,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633527919] [2023-11-23 06:59:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:40,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:59:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:59:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:59:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:59:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:59:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:59:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:59:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 06:59:43,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:43,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633527919] [2023-11-23 06:59:43,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633527919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:43,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895833903] [2023-11-23 06:59:43,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:59:43,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:43,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:43,964 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 06:59:44,044 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 06:59:44,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:59:44,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:59:44,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-23 06:59:44,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:59:45,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:59:45,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895833903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:45,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:59:45,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2023-11-23 06:59:45,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007353175] [2023-11-23 06:59:45,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:59:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 06:59:45,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 06:59:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2023-11-23 06:59:45,785 INFO L87 Difference]: Start difference. First operand 339 states and 439 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 21 states have internal predecessors, (127), 7 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 06:59:50,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:52,653 WARN L539 Checker$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 06:59:54,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:57,644 WARN L539 Checker$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 07:00:01,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:03,235 WARN L539 Checker$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 07:00:05,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:07,288 WARN L539 Checker$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 07:00:09,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:11,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:13,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:15,869 WARN L539 Checker$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] Killed by 15