./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_get_entry_count_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_get_entry_count_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 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:42:04,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:42:04,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:42:04,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:42:04,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:42:04,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:42:04,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:42:04,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:42:04,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:42:04,270 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:42:04,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:42:04,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:42:04,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:42:04,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:42:04,272 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:42:04,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:42:04,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:42:04,273 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:42:04,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:42:04,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:42:04,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:42:04,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:42:04,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:42:04,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:42:04,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:42:04,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:42:04,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:42:04,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:42:04,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:42:04,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:42:04,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:42:04,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:42:04,277 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:42:04,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:42:04,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:42:04,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:42:04,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:42:04,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:42:04,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:42:04,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:42:04,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:42:04,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:42:04,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:42:04,572 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:42:04,574 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:42:04,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_get_entry_count_harness.i [2023-11-23 08:42:05,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:42:06,075 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:42:06,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_table_get_entry_count_harness.i [2023-11-23 08:42:06,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f46e4e35/d32a206afcd546cabc9acbb4d86d0d40/FLAGe48e41d4d [2023-11-23 08:42:06,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f46e4e35/d32a206afcd546cabc9acbb4d86d0d40 [2023-11-23 08:42:06,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:42:06,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:42:06,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:42:06,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:42:06,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:42:06,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:42:06" (1/1) ... [2023-11-23 08:42:06,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9d300a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:06, skipping insertion in model container [2023-11-23 08:42:06,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:42:06" (1/1) ... [2023-11-23 08:42:06,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:42:06,439 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_hash_table_get_entry_count_harness.i[4504,4517] [2023-11-23 08:42:06,447 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_hash_table_get_entry_count_harness.i[4564,4577] [2023-11-23 08:42:07,138 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,139 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,139 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,157 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,157 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,159 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,177 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,524 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:42:07,525 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:42:07,525 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:42:07,526 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:42:07,527 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:42:07,528 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:42:07,528 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:42:07,528 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:42:07,529 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:42:07,529 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:42:07,898 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,898 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,909 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,910 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,913 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,913 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,920 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:07,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:42:07,959 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:42:07,968 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_hash_table_get_entry_count_harness.i[4504,4517] [2023-11-23 08:42:07,969 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_hash_table_get_entry_count_harness.i[4564,4577] [2023-11-23 08:42:08,116 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,117 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,117 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,117 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,118 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,123 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,123 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,152 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:42:08,156 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:42:08,157 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:42:08,157 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:42:08,159 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:42:08,159 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:42:08,160 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:42:08,160 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:42:08,160 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:42:08,161 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:42:08,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-23 08:42:08,255 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,256 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,268 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,270 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,270 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,279 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,280 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,280 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,282 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:42:08,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:42:08,491 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,491 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,491 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,491 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,491 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,491 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,491 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,492 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,493 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,493 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:42:08,498 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:42:08,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08 WrapperNode [2023-11-23 08:42:08,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:42:08,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:42:08,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:42:08,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:42:08,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,643 INFO L138 Inliner]: procedures = 772, calls = 2434, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 607 [2023-11-23 08:42:08,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:42:08,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:42:08,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:42:08,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:42:08,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:42:08,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:42:08,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:42:08,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:42:08,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (1/1) ... [2023-11-23 08:42:08,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:42:08,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:08,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:42:08,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:42:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 08:42:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:42:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:42:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:42:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:42:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:42:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 08:42:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 08:42:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:42:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:42:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:42:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:42:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:42:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:42:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:42:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:42:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:42:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:42:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 08:42:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 08:42:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:42:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:42:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:42:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:42:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 08:42:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 08:42:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:42:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2023-11-23 08:42:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2023-11-23 08:42:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 08:42:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 08:42:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:42:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:42:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 08:42:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 08:42:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:42:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:42:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:42:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 08:42:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 08:42:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:42:09,042 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:42:09,044 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:42:09,551 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:42:09,623 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:42:09,623 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 08:42:09,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:42:09 BoogieIcfgContainer [2023-11-23 08:42:09,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:42:09,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:42:09,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:42:09,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:42:09,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:42:06" (1/3) ... [2023-11-23 08:42:09,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a13598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:42:09, skipping insertion in model container [2023-11-23 08:42:09,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:42:08" (2/3) ... [2023-11-23 08:42:09,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a13598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:42:09, skipping insertion in model container [2023-11-23 08:42:09,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:42:09" (3/3) ... [2023-11-23 08:42:09,631 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_get_entry_count_harness.i [2023-11-23 08:42:09,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:42:09,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:42:09,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:42:09,700 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;@6e9c98cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:42:09,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:42:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 60 states have internal predecessors, (73), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 08:42:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 08:42:09,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:09,717 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:09,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:09,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:09,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1995456018, now seen corresponding path program 1 times [2023-11-23 08:42:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:09,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103556636] [2023-11-23 08:42:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:10,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103556636] [2023-11-23 08:42:10,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 08:42:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667771926] [2023-11-23 08:42:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:10,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:10,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:10,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:10,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:42:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:10,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 08:42:10,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 08:42:10,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:42:10,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667771926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:42:10,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:42:10,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 08:42:10,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018416029] [2023-11-23 08:42:10,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:42:10,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:42:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:10,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:42:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:42:10,627 INFO L87 Difference]: Start difference. First operand has 101 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 60 states have internal predecessors, (73), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:42:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:10,718 INFO L93 Difference]: Finished difference Result 196 states and 259 transitions. [2023-11-23 08:42:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:42:10,720 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 96 [2023-11-23 08:42:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:10,726 INFO L225 Difference]: With dead ends: 196 [2023-11-23 08:42:10,726 INFO L226 Difference]: Without dead ends: 99 [2023-11-23 08:42:10,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:42:10,730 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:10,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:42:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-23 08:42:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-23 08:42:10,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 59 states have internal predecessors, (69), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 08:42:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2023-11-23 08:42:10,771 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 96 [2023-11-23 08:42:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:10,771 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2023-11-23 08:42:10,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:42:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2023-11-23 08:42:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 08:42:10,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:10,780 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:10,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:42:10,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 08:42:10,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:10,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash -133456466, now seen corresponding path program 1 times [2023-11-23 08:42:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:10,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728719866] [2023-11-23 08:42:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:10,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:11,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:42:11,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625042831] [2023-11-23 08:42:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:11,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:11,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:11,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:11,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:42:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:11,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:42:11,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 08:42:11,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:42:11,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:11,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728719866] [2023-11-23 08:42:11,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:42:11,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625042831] [2023-11-23 08:42:11,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625042831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:42:11,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:42:11,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:42:11,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283299050] [2023-11-23 08:42:11,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:42:11,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:42:11,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:11,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:42:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:42:11,560 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:42:11,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:11,747 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2023-11-23 08:42:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:42:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 96 [2023-11-23 08:42:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:11,756 INFO L225 Difference]: With dead ends: 192 [2023-11-23 08:42:11,757 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 08:42:11,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:42:11,776 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:11,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 412 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:42:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 08:42:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-23 08:42:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-23 08:42:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2023-11-23 08:42:11,795 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 96 [2023-11-23 08:42:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:11,796 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2023-11-23 08:42:11,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 08:42:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2023-11-23 08:42:11,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 08:42:11,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:11,799 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:11,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 08:42:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 08:42:12,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:12,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1144539756, now seen corresponding path program 1 times [2023-11-23 08:42:12,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:12,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122387079] [2023-11-23 08:42:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:12,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:42:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:42:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:42:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:42:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:42:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:42:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:42:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:42:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:42:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:42:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 08:42:13,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:13,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122387079] [2023-11-23 08:42:13,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122387079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:42:13,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:42:13,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 08:42:13,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543453290] [2023-11-23 08:42:13,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:42:13,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:42:13,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:42:13,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:42:13,528 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:42:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:14,382 INFO L93 Difference]: Finished difference Result 200 states and 242 transitions. [2023-11-23 08:42:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:42:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 104 [2023-11-23 08:42:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:14,385 INFO L225 Difference]: With dead ends: 200 [2023-11-23 08:42:14,385 INFO L226 Difference]: Without dead ends: 117 [2023-11-23 08:42:14,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:42:14,386 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 152 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:14,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 389 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:42:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-23 08:42:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2023-11-23 08:42:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 64 states have (on average 1.1875) internal successors, (76), 66 states have internal predecessors, (76), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2023-11-23 08:42:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2023-11-23 08:42:14,395 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 104 [2023-11-23 08:42:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:14,396 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2023-11-23 08:42:14,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-23 08:42:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2023-11-23 08:42:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 08:42:14,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:14,397 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 08:42:14,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:14,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1222154838, now seen corresponding path program 1 times [2023-11-23 08:42:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:14,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997849409] [2023-11-23 08:42:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:14,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:42:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:42:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:42:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:42:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:42:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:42:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:42:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:42:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:42:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:42:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 08:42:14,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:14,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997849409] [2023-11-23 08:42:14,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997849409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:42:14,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:42:14,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:42:14,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958900105] [2023-11-23 08:42:14,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:42:14,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:42:14,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:42:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:42:14,829 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:42:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:15,258 INFO L93 Difference]: Finished difference Result 205 states and 248 transitions. [2023-11-23 08:42:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:42:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 104 [2023-11-23 08:42:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:15,260 INFO L225 Difference]: With dead ends: 205 [2023-11-23 08:42:15,260 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 08:42:15,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:42:15,261 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 67 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:15,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 215 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:42:15,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 08:42:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2023-11-23 08:42:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 64 states have internal predecessors, (72), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2023-11-23 08:42:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2023-11-23 08:42:15,269 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 104 [2023-11-23 08:42:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:15,269 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2023-11-23 08:42:15,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 08:42:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2023-11-23 08:42:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:42:15,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:15,271 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 08:42:15,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:15,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1355867551, now seen corresponding path program 1 times [2023-11-23 08:42:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27641136] [2023-11-23 08:42:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:42:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:42:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:42:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:42:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:42:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:42:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:42:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:42:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:42:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:42:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:42:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 08:42:15,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:15,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27641136] [2023-11-23 08:42:15,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27641136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:42:15,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:42:15,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:42:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967632444] [2023-11-23 08:42:15,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:42:15,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:42:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:15,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:42:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:42:15,922 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 08:42:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:16,699 INFO L93 Difference]: Finished difference Result 199 states and 238 transitions. [2023-11-23 08:42:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:42:16,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 110 [2023-11-23 08:42:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:16,701 INFO L225 Difference]: With dead ends: 199 [2023-11-23 08:42:16,701 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 08:42:16,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:42:16,702 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 99 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:16,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 377 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:42:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 08:42:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2023-11-23 08:42:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 64 states have internal predecessors, (71), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2023-11-23 08:42:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2023-11-23 08:42:16,716 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 110 [2023-11-23 08:42:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:16,716 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2023-11-23 08:42:16,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 08:42:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2023-11-23 08:42:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 08:42:16,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:16,718 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:16,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 08:42:16,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:16,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash -204410490, now seen corresponding path program 1 times [2023-11-23 08:42:16,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:16,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209509413] [2023-11-23 08:42:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:42:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:42:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:42:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:42:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:42:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:42:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:42:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:42:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:42:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:42:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:42:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:42:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 08:42:17,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209509413] [2023-11-23 08:42:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209509413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:42:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569956715] [2023-11-23 08:42:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:17,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:17,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:17,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:17,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:42:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:17,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 2352 conjuncts, 106 conjunts are in the unsatisfiable core [2023-11-23 08:42:17,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:18,054 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 11 treesize of output 7 [2023-11-23 08:42:18,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:42:18,063 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-23 08:42:18,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:42:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 57 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 08:42:19,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:42:19,952 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 08:42:19,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569956715] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:42:19,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:42:19,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 15] total 43 [2023-11-23 08:42:19,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392460594] [2023-11-23 08:42:19,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:42:19,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-23 08:42:19,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-23 08:42:19,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1678, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 08:42:19,958 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 43 states, 32 states have (on average 3.4375) internal successors, (110), 29 states have internal predecessors, (110), 10 states have call successors, (48), 8 states have call predecessors, (48), 13 states have return successors, (44), 11 states have call predecessors, (44), 10 states have call successors, (44) [2023-11-23 08:42:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:25,812 INFO L93 Difference]: Finished difference Result 307 states and 361 transitions. [2023-11-23 08:42:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-23 08:42:25,814 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 32 states have (on average 3.4375) internal successors, (110), 29 states have internal predecessors, (110), 10 states have call successors, (48), 8 states have call predecessors, (48), 13 states have return successors, (44), 11 states have call predecessors, (44), 10 states have call successors, (44) Word has length 116 [2023-11-23 08:42:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:25,818 INFO L225 Difference]: With dead ends: 307 [2023-11-23 08:42:25,818 INFO L226 Difference]: Without dead ends: 204 [2023-11-23 08:42:25,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=547, Invalid=6095, Unknown=0, NotChecked=0, Total=6642 [2023-11-23 08:42:25,824 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 283 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:25,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1860 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-23 08:42:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-23 08:42:25,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 187. [2023-11-23 08:42:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 118 states have internal predecessors, (132), 40 states have call successors, (40), 26 states have call predecessors, (40), 32 states have return successors, (47), 42 states have call predecessors, (47), 38 states have call successors, (47) [2023-11-23 08:42:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 219 transitions. [2023-11-23 08:42:25,850 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 219 transitions. Word has length 116 [2023-11-23 08:42:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:25,850 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 219 transitions. [2023-11-23 08:42:25,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 32 states have (on average 3.4375) internal successors, (110), 29 states have internal predecessors, (110), 10 states have call successors, (48), 8 states have call predecessors, (48), 13 states have return successors, (44), 11 states have call predecessors, (44), 10 states have call successors, (44) [2023-11-23 08:42:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 219 transitions. [2023-11-23 08:42:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:42:25,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:25,852 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:25,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 08:42:26,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:26,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:26,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1975922000, now seen corresponding path program 1 times [2023-11-23 08:42:26,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:26,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829036196] [2023-11-23 08:42:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:26,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:42:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:42:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:42:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:42:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:42:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:42:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:42:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:42:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:42:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:42:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:42:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:42:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 08:42:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 08:42:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 08:42:26,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829036196] [2023-11-23 08:42:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829036196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:42:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836079092] [2023-11-23 08:42:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:26,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:26,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:26,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:26,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:42:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:27,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:42:27,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 08:42:27,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:42:27,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836079092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:42:27,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:42:27,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2023-11-23 08:42:27,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364984229] [2023-11-23 08:42:27,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:42:27,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:42:27,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:42:27,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:42:27,198 INFO L87 Difference]: Start difference. First operand 187 states and 219 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 08:42:27,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:27,481 INFO L93 Difference]: Finished difference Result 287 states and 333 transitions. [2023-11-23 08:42:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:42:27,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 120 [2023-11-23 08:42:27,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:27,482 INFO L225 Difference]: With dead ends: 287 [2023-11-23 08:42:27,482 INFO L226 Difference]: Without dead ends: 189 [2023-11-23 08:42:27,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:42:27,483 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:27,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 452 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:42:27,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-23 08:42:27,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-23 08:42:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 120 states have internal predecessors, (131), 40 states have call successors, (40), 26 states have call predecessors, (40), 33 states have return successors, (48), 42 states have call predecessors, (48), 38 states have call successors, (48) [2023-11-23 08:42:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 219 transitions. [2023-11-23 08:42:27,497 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 219 transitions. Word has length 120 [2023-11-23 08:42:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:27,497 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 219 transitions. [2023-11-23 08:42:27,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 08:42:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 219 transitions. [2023-11-23 08:42:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 08:42:27,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:27,499 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:27,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:42:27,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:27,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:27,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:27,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2032733511, now seen corresponding path program 1 times [2023-11-23 08:42:27,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:27,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792561592] [2023-11-23 08:42:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:27,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:27,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:42:27,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124612704] [2023-11-23 08:42:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:27,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:27,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:27,763 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:27,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:42:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:28,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:42:28,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 08:42:28,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:42:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792561592] [2023-11-23 08:42:28,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:42:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124612704] [2023-11-23 08:42:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124612704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:42:28,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:42:28,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:42:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391373421] [2023-11-23 08:42:28,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:42:28,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:42:28,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:42:28,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:42:28,260 INFO L87 Difference]: Start difference. First operand 189 states and 219 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 08:42:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:28,573 INFO L93 Difference]: Finished difference Result 355 states and 406 transitions. [2023-11-23 08:42:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:42:28,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 126 [2023-11-23 08:42:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:28,575 INFO L225 Difference]: With dead ends: 355 [2023-11-23 08:42:28,575 INFO L226 Difference]: Without dead ends: 187 [2023-11-23 08:42:28,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:42:28,577 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 2 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:28,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 453 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:42:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-23 08:42:28,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2023-11-23 08:42:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 112 states have (on average 1.125) internal successors, (126), 117 states have internal predecessors, (126), 40 states have call successors, (40), 26 states have call predecessors, (40), 32 states have return successors, (47), 41 states have call predecessors, (47), 38 states have call successors, (47) [2023-11-23 08:42:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 213 transitions. [2023-11-23 08:42:28,595 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 213 transitions. Word has length 126 [2023-11-23 08:42:28,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:28,595 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 213 transitions. [2023-11-23 08:42:28,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 08:42:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 213 transitions. [2023-11-23 08:42:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 08:42:28,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:28,597 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:28,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:42:28,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:28,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:28,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:28,813 INFO L85 PathProgramCache]: Analyzing trace with hash 404103266, now seen corresponding path program 1 times [2023-11-23 08:42:28,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524253980] [2023-11-23 08:42:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:28,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:42:28,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481430876] [2023-11-23 08:42:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:28,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:28,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:28,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:28,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:42:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:29,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 98 conjunts are in the unsatisfiable core [2023-11-23 08:42:29,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:30,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:42:30,110 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 11 treesize of output 7 [2023-11-23 08:42:30,117 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-11-23 08:42:30,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:42:30,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-11-23 08:42:30,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:42:30,877 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 56 treesize of output 48 [2023-11-23 08:42:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 08:42:31,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:42:32,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:32,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524253980] [2023-11-23 08:42:32,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:42:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481430876] [2023-11-23 08:42:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481430876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:42:32,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:42:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-11-23 08:42:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47231131] [2023-11-23 08:42:32,155 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:42:32,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 08:42:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 08:42:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1294, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 08:42:32,157 INFO L87 Difference]: Start difference. First operand 185 states and 213 transitions. Second operand has 27 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 9 states have call successors, (24), 4 states have call predecessors, (24), 10 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-23 08:42:33,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:42:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:36,970 INFO L93 Difference]: Finished difference Result 443 states and 500 transitions. [2023-11-23 08:42:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-23 08:42:36,971 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 9 states have call successors, (24), 4 states have call predecessors, (24), 10 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 132 [2023-11-23 08:42:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:36,972 INFO L225 Difference]: With dead ends: 443 [2023-11-23 08:42:36,972 INFO L226 Difference]: Without dead ends: 229 [2023-11-23 08:42:36,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=359, Invalid=4471, Unknown=0, NotChecked=0, Total=4830 [2023-11-23 08:42:36,974 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 103 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:36,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1466 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-23 08:42:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-23 08:42:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 220. [2023-11-23 08:42:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 135 states have (on average 1.1111111111111112) internal successors, (150), 139 states have internal predecessors, (150), 46 states have call successors, (46), 32 states have call predecessors, (46), 38 states have return successors, (54), 48 states have call predecessors, (54), 44 states have call successors, (54) [2023-11-23 08:42:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2023-11-23 08:42:36,989 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 132 [2023-11-23 08:42:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:36,990 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2023-11-23 08:42:36,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 9 states have call successors, (24), 4 states have call predecessors, (24), 10 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-23 08:42:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2023-11-23 08:42:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 08:42:36,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:36,993 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:37,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:42:37,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:37,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:37,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:37,212 INFO L85 PathProgramCache]: Analyzing trace with hash -129045019, now seen corresponding path program 1 times [2023-11-23 08:42:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:37,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424115400] [2023-11-23 08:42:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:37,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:37,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:42:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942095167] [2023-11-23 08:42:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:37,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:37,253 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:37,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:42:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:37,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 78 conjunts are in the unsatisfiable core [2023-11-23 08:42:37,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:38,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:42:38,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:42:38,113 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-23 08:42:38,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:42:40,128 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_28| Int) (|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.offset_BEFORE_CALL_28| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_28|) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.offset_BEFORE_CALL_28|)) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_28|)) is different from true [2023-11-23 08:42:42,262 WARN L876 $PredicateComparison]: unable to prove that (and (or (exists ((|v_hash_table_state_is_valid_#in~map.base_BEFORE_CALL_3| Int) (|v_hash_table_state_is_valid_#in~map.offset_BEFORE_CALL_3| Int)) (<= (mod (select (select |c_#memory_int| |v_hash_table_state_is_valid_#in~map.base_BEFORE_CALL_3|) (+ 40 |v_hash_table_state_is_valid_#in~map.offset_BEFORE_CALL_3|)) 18446744073709551616) 1)) (exists ((|v_hash_table_state_is_valid_#in~map.base_BEFORE_CALL_3| Int) (|v_hash_table_state_is_valid_#in~map.offset_BEFORE_CALL_3| Int)) (<= 2 (mod (select (select |c_#memory_int| |v_hash_table_state_is_valid_#in~map.base_BEFORE_CALL_3|) (+ 40 |v_hash_table_state_is_valid_#in~map.offset_BEFORE_CALL_3|)) 18446744073709551616)))) (exists ((|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_28| Int) (|v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.offset_BEFORE_CALL_28| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_28|) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.offset_BEFORE_CALL_28|)) |v_ULTIMATE.start_aws_hash_table_get_entry_count_harness_~#table~0#1.base_BEFORE_CALL_28|))) is different from true [2023-11-23 08:42:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 08:42:42,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:42:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 08:42:46,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:46,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424115400] [2023-11-23 08:42:46,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:42:46,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942095167] [2023-11-23 08:42:46,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942095167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:42:46,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:42:46,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16] total 38 [2023-11-23 08:42:46,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209969445] [2023-11-23 08:42:46,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:42:46,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 08:42:46,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 08:42:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1171, Unknown=3, NotChecked=138, Total=1406 [2023-11-23 08:42:46,012 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand has 38 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 28 states have internal predecessors, (106), 10 states have call successors, (39), 5 states have call predecessors, (39), 11 states have return successors, (37), 11 states have call predecessors, (37), 10 states have call successors, (37) [2023-11-23 08:42:50,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:42:52,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:42:56,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:42:58,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:43:00,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:43:02,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:43:04,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:43:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:43:04,589 INFO L93 Difference]: Finished difference Result 438 states and 487 transitions. [2023-11-23 08:43:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-23 08:43:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 28 states have internal predecessors, (106), 10 states have call successors, (39), 5 states have call predecessors, (39), 11 states have return successors, (37), 11 states have call predecessors, (37), 10 states have call successors, (37) Word has length 133 [2023-11-23 08:43:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:43:04,591 INFO L225 Difference]: With dead ends: 438 [2023-11-23 08:43:04,591 INFO L226 Difference]: Without dead ends: 268 [2023-11-23 08:43:04,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=199, Invalid=2562, Unknown=3, NotChecked=206, Total=2970 [2023-11-23 08:43:04,593 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 42 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 427 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:43:04,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2027 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1604 Invalid, 7 Unknown, 427 Unchecked, 17.8s Time] [2023-11-23 08:43:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-23 08:43:04,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 196. [2023-11-23 08:43:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 121 states have (on average 1.0826446280991735) internal successors, (131), 124 states have internal predecessors, (131), 41 states have call successors, (41), 30 states have call predecessors, (41), 33 states have return successors, (47), 41 states have call predecessors, (47), 40 states have call successors, (47) [2023-11-23 08:43:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2023-11-23 08:43:04,610 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 133 [2023-11-23 08:43:04,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:43:04,612 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2023-11-23 08:43:04,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 29 states have (on average 3.6551724137931036) internal successors, (106), 28 states have internal predecessors, (106), 10 states have call successors, (39), 5 states have call predecessors, (39), 11 states have return successors, (37), 11 states have call predecessors, (37), 10 states have call successors, (37) [2023-11-23 08:43:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2023-11-23 08:43:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 08:43:04,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:43:04,614 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:43:04,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:43:04,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:43:04,827 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:43:04,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:43:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1891217930, now seen corresponding path program 1 times [2023-11-23 08:43:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:43:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029722378] [2023-11-23 08:43:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:43:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:43:04,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:43:04,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755688272] [2023-11-23 08:43:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:43:04,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:43:04,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:43:04,913 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:43:04,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:43:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:43:05,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 2580 conjuncts, 225 conjunts are in the unsatisfiable core [2023-11-23 08:43:05,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:43:05,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:43:06,086 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 08:43:06,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 08:43:06,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 08:43:16,350 WARN L293 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 848 DAG size of output: 235 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 08:43:16,350 INFO L349 Elim1Store]: treesize reduction 2829, result has 15.5 percent of original size [2023-11-23 08:43:16,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 19 new quantified variables, introduced 156 case distinctions, treesize of input 755 treesize of output 1573 Killed by 15