./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_remove_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_remove_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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:39:03,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:39:04,046 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:39:04,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:39:04,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:39:04,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:39:04,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:39:04,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:39:04,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:39:04,092 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:39:04,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:39:04,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:39:04,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:39:04,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:39:04,095 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:39:04,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:39:04,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:39:04,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:39:04,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:39:04,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:39:04,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:39:04,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:39:04,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:39:04,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:39:04,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:39:04,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:39:04,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:39:04,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:39:04,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:39:04,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:39:04,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:39:04,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:39:04,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:39:04,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:39:04,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:39:04,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:39:04,102 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:39:04,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:39:04,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:39:04,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:39:04,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:39:04,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:39:04,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:39:04,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:39:04,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:39:04,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_remove_harness.i [2023-11-23 07:39:05,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:39:06,144 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:39:06,145 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_remove_harness.i [2023-11-23 07:39:06,194 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/714207a35/9fdafac131c74117b72f852cde43bfc7/FLAGfa4078078 [2023-11-23 07:39:06,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/714207a35/9fdafac131c74117b72f852cde43bfc7 [2023-11-23 07:39:06,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:39:06,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:39:06,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:39:06,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:39:06,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:39:06,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:39:06" (1/1) ... [2023-11-23 07:39:06,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bcd05af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:06, skipping insertion in model container [2023-11-23 07:39:06,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:39:06" (1/1) ... [2023-11-23 07:39:06,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:39:06,662 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_priority_queue_remove_harness.i[4499,4512] [2023-11-23 07:39:06,669 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_priority_queue_remove_harness.i[4559,4572] [2023-11-23 07:39:07,450 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,451 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,472 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,473 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,475 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,475 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,726 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:39:07,727 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:39:07,728 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:39:07,729 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:39:07,730 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:39:07,731 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:39:07,732 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:39:07,732 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:39:07,733 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:39:07,733 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:39:07,879 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,889 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,951 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,953 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,953 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,956 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,957 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,962 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,962 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,966 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,976 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,976 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,987 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,989 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:07,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,013 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,014 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,014 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:39:08,065 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:39:08,089 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_priority_queue_remove_harness.i[4499,4512] [2023-11-23 07:39:08,091 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_priority_queue_remove_harness.i[4559,4572] [2023-11-23 07:39:08,144 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,159 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,162 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,162 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,208 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:39:08,236 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:39:08,237 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:39:08,238 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:39:08,238 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:39:08,239 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:39:08,239 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:39:08,239 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:39:08,240 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:39:08,240 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:39:08,290 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,293 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-23 07:39:08,328 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,335 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,335 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,335 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,337 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,337 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,360 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:08,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:39:08,550 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,550 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,551 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,551 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,551 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,552 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,552 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,552 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,552 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,552 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,552 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,552 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,553 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,553 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,553 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:08,560 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:39:08,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08 WrapperNode [2023-11-23 07:39:08,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:39:08,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:39:08,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:39:08,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:39:08,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,761 INFO L138 Inliner]: procedures = 696, calls = 1922, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1063 [2023-11-23 07:39:08,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:39:08,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:39:08,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:39:08,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:39:08,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,901 INFO L188 MemorySlicer]: Split 386 memory accesses to 8 slices as follows [17, 2, 262, 0, 3, 84, 15, 3]. 68 percent of accesses are in the largest equivalence class. The 252 initializations are split as follows [4, 2, 242, 0, 1, 0, 0, 3]. The 30 writes are split as follows [3, 0, 8, 0, 1, 5, 13, 0]. [2023-11-23 07:39:08,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:08,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:09,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:09,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:39:09,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:39:09,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:39:09,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:39:09,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (1/1) ... [2023-11-23 07:39:09,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:39:09,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:09,073 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 07:39:09,102 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 07:39:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-23 07:39:09,135 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-23 07:39:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 07:39:09,135 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 07:39:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:39:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 07:39:09,136 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 07:39:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 07:39:09,136 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 07:39:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:39:09,136 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:39:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-23 07:39:09,136 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-23 07:39:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-23 07:39:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-23 07:39:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-23 07:39:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-23 07:39:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-23 07:39:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-23 07:39:09,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-23 07:39:09,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-23 07:39:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:39:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:39:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:39:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:39:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:39:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:39:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:39:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:39:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 07:39:09,140 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 07:39:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:39:09,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:39:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-23 07:39:09,143 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-23 07:39:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:39:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:39:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:39:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:39:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:39:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:39:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:39:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:39:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:39:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:39:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-23 07:39:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-23 07:39:09,151 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 07:39:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 07:39:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:39:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:39:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:39:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:39:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 07:39:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 07:39:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-23 07:39:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-23 07:39:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-23 07:39:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-23 07:39:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-23 07:39:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-23 07:39:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-23 07:39:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-23 07:39:09,154 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 07:39:09,154 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 07:39:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 07:39:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 07:39:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 07:39:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 07:39:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-23 07:39:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-23 07:39:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-23 07:39:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-23 07:39:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-23 07:39:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2023-11-23 07:39:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2023-11-23 07:39:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2023-11-23 07:39:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-23 07:39:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-23 07:39:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-23 07:39:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-23 07:39:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-23 07:39:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2023-11-23 07:39:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2023-11-23 07:39:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2023-11-23 07:39:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:39:09,158 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:39:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 07:39:09,158 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 07:39:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-23 07:39:09,158 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-23 07:39:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:39:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:39:09,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:39:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:39:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:39:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:39:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:39:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:39:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:39:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-23 07:39:09,160 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-23 07:39:09,160 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:39:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:39:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 07:39:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 07:39:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:39:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:39:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:39:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:39:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:39:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:39:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:39:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:39:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 07:39:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 07:39:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 07:39:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 07:39:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 07:39:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 07:39:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:39:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:39:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:39:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:39:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:39:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:39:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:39:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:39:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-23 07:39:09,164 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-23 07:39:09,556 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:39:09,559 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:39:11,034 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:39:11,145 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:39:11,146 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-23 07:39:11,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:39:11 BoogieIcfgContainer [2023-11-23 07:39:11,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:39:11,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:39:11,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:39:11,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:39:11,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:39:06" (1/3) ... [2023-11-23 07:39:11,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85075bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:39:11, skipping insertion in model container [2023-11-23 07:39:11,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:08" (2/3) ... [2023-11-23 07:39:11,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85075bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:39:11, skipping insertion in model container [2023-11-23 07:39:11,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:39:11" (3/3) ... [2023-11-23 07:39:11,158 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2023-11-23 07:39:11,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:39:11,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 07:39:11,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:39:11,250 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;@670f1d07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:39:11,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 07:39:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 423 states, 233 states have (on average 1.296137339055794) internal successors, (302), 238 states have internal predecessors, (302), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-11-23 07:39:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 07:39:11,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:11,273 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2023-11-23 07:39:11,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:11,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash 493416870, now seen corresponding path program 1 times [2023-11-23 07:39:11,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:11,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514803904] [2023-11-23 07:39:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:11,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:39:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:39:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:39:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:39:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:39:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 07:39:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:39:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:39:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:39:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:39:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:39:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:39:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 07:39:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 07:39:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-23 07:39:12,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:12,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514803904] [2023-11-23 07:39:12,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514803904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:12,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:12,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:39:12,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837069198] [2023-11-23 07:39:12,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:12,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:39:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:39:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:39:12,675 INFO L87 Difference]: Start difference. First operand has 423 states, 233 states have (on average 1.296137339055794) internal successors, (302), 238 states have internal predecessors, (302), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 07:39:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:16,722 INFO L93 Difference]: Finished difference Result 1259 states and 2406 transitions. [2023-11-23 07:39:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:39:16,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 128 [2023-11-23 07:39:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:16,746 INFO L225 Difference]: With dead ends: 1259 [2023-11-23 07:39:16,746 INFO L226 Difference]: Without dead ends: 842 [2023-11-23 07:39:16,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:39:16,763 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 591 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 942 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 942 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:16,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1216 Invalid, 1840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [942 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 07:39:16,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-11-23 07:39:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 420. [2023-11-23 07:39:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 232 states have (on average 1.25) internal successors, (290), 235 states have internal predecessors, (290), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-11-23 07:39:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 608 transitions. [2023-11-23 07:39:16,932 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 608 transitions. Word has length 128 [2023-11-23 07:39:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:16,932 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 608 transitions. [2023-11-23 07:39:16,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 07:39:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 608 transitions. [2023-11-23 07:39:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 07:39:16,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:16,937 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 1] [2023-11-23 07:39:16,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:39:16,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:16,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 926342663, now seen corresponding path program 1 times [2023-11-23 07:39:16,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:16,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857975743] [2023-11-23 07:39:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:16,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:39:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:39:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:39:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:39:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:39:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 07:39:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:39:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:39:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:39:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:39:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:39:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:39:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 07:39:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 07:39:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 07:39:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 07:39:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 07:39:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-23 07:39:18,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857975743] [2023-11-23 07:39:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857975743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:39:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490773429] [2023-11-23 07:39:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:18,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:18,228 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 07:39:18,249 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 07:39:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:18,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:39:18,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 07:39:19,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:19,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490773429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:19,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:39:19,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 07:39:19,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598166919] [2023-11-23 07:39:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:19,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:39:19,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:19,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:39:19,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:39:19,074 INFO L87 Difference]: Start difference. First operand 420 states and 608 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 07:39:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:19,744 INFO L93 Difference]: Finished difference Result 811 states and 1190 transitions. [2023-11-23 07:39:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:39:19,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 145 [2023-11-23 07:39:19,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:19,751 INFO L225 Difference]: With dead ends: 811 [2023-11-23 07:39:19,751 INFO L226 Difference]: Without dead ends: 422 [2023-11-23 07:39:19,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:39:19,758 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 66 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:19,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 2104 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:39:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-23 07:39:19,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2023-11-23 07:39:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 233 states have (on average 1.2489270386266094) internal successors, (291), 237 states have internal predecessors, (291), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2023-11-23 07:39:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 622 transitions. [2023-11-23 07:39:19,825 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 622 transitions. Word has length 145 [2023-11-23 07:39:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:19,827 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 622 transitions. [2023-11-23 07:39:19,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 07:39:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 622 transitions. [2023-11-23 07:39:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 07:39:19,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:19,833 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:19,863 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 07:39:20,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:20,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:20,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1867065304, now seen corresponding path program 1 times [2023-11-23 07:39:20,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:20,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236418731] [2023-11-23 07:39:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:39:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:39:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:39:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:39:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:39:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:39:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:39:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:39:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:39:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:39:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 07:39:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:39:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 07:39:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 07:39:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:39:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 07:39:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 07:39:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 07:39:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-11-23 07:39:21,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:21,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236418731] [2023-11-23 07:39:21,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236418731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:39:21,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367195623] [2023-11-23 07:39:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:21,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:21,248 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 07:39:21,258 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 07:39:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:21,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:39:21,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 07:39:22,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367195623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:22,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:39:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 07:39:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428320081] [2023-11-23 07:39:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:22,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:39:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:22,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:39:22,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:39:22,077 INFO L87 Difference]: Start difference. First operand 422 states and 622 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 07:39:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:23,610 INFO L93 Difference]: Finished difference Result 834 states and 1261 transitions. [2023-11-23 07:39:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:39:23,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 153 [2023-11-23 07:39:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:23,616 INFO L225 Difference]: With dead ends: 834 [2023-11-23 07:39:23,616 INFO L226 Difference]: Without dead ends: 443 [2023-11-23 07:39:23,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:39:23,626 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 117 mSDsluCounter, 2511 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:23,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 3044 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 07:39:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-23 07:39:23,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2023-11-23 07:39:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 249 states have (on average 1.2570281124497993) internal successors, (313), 253 states have internal predecessors, (313), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-23 07:39:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 665 transitions. [2023-11-23 07:39:23,666 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 665 transitions. Word has length 153 [2023-11-23 07:39:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:23,667 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 665 transitions. [2023-11-23 07:39:23,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 07:39:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 665 transitions. [2023-11-23 07:39:23,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 07:39:23,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:23,670 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 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, 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 07:39:23,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:23,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 07:39:23,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:23,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1198408920, now seen corresponding path program 1 times [2023-11-23 07:39:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043890242] [2023-11-23 07:39:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:24,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345644050] [2023-11-23 07:39:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:24,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:24,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:24,013 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 07:39:24,028 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 07:39:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:24,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 3157 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:39:24,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 07:39:24,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:24,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:24,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043890242] [2023-11-23 07:39:24,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:24,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345644050] [2023-11-23 07:39:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345644050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:24,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:24,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:39:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352936478] [2023-11-23 07:39:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:24,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:39:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:24,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:39:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:39:24,766 INFO L87 Difference]: Start difference. First operand 441 states and 665 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 07:39:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:25,657 INFO L93 Difference]: Finished difference Result 857 states and 1320 transitions. [2023-11-23 07:39:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:39:25,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 166 [2023-11-23 07:39:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:25,661 INFO L225 Difference]: With dead ends: 857 [2023-11-23 07:39:25,662 INFO L226 Difference]: Without dead ends: 447 [2023-11-23 07:39:25,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:39:25,665 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 85 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:25,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 2598 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:39:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-23 07:39:25,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2023-11-23 07:39:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 249 states have (on average 1.2570281124497993) internal successors, (313), 253 states have internal predecessors, (313), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-23 07:39:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 665 transitions. [2023-11-23 07:39:25,699 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 665 transitions. Word has length 166 [2023-11-23 07:39:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:25,700 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 665 transitions. [2023-11-23 07:39:25,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 07:39:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 665 transitions. [2023-11-23 07:39:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-23 07:39:25,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:25,702 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:25,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:25,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:25,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:25,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2075113782, now seen corresponding path program 1 times [2023-11-23 07:39:25,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290291153] [2023-11-23 07:39:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:25,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:26,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046568610] [2023-11-23 07:39:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:26,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:26,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:26,044 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 07:39:26,063 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 07:39:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:26,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 3280 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:39:26,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-23 07:39:26,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:26,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290291153] [2023-11-23 07:39:26,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:26,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046568610] [2023-11-23 07:39:26,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046568610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:26,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:39:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119522948] [2023-11-23 07:39:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:26,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:39:26,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:26,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:39:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:39:26,914 INFO L87 Difference]: Start difference. First operand 441 states and 665 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-23 07:39:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:28,325 INFO L93 Difference]: Finished difference Result 867 states and 1324 transitions. [2023-11-23 07:39:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:39:28,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 182 [2023-11-23 07:39:28,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:28,330 INFO L225 Difference]: With dead ends: 867 [2023-11-23 07:39:28,330 INFO L226 Difference]: Without dead ends: 457 [2023-11-23 07:39:28,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:39:28,333 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 145 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:28,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 3495 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:39:28,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-23 07:39:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 441. [2023-11-23 07:39:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 249 states have (on average 1.2570281124497993) internal successors, (313), 253 states have internal predecessors, (313), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-23 07:39:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 665 transitions. [2023-11-23 07:39:28,362 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 665 transitions. Word has length 182 [2023-11-23 07:39:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:28,363 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 665 transitions. [2023-11-23 07:39:28,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-23 07:39:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 665 transitions. [2023-11-23 07:39:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 07:39:28,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:28,365 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:28,392 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 07:39:28,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:28,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:28,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash -127763510, now seen corresponding path program 2 times [2023-11-23 07:39:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738389176] [2023-11-23 07:39:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:28,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:28,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865548135] [2023-11-23 07:39:28,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:39:28,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:28,738 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 07:39:28,758 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 07:39:29,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:39:29,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:39:29,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 3475 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:39:29,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-23 07:39:29,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:29,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738389176] [2023-11-23 07:39:29,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865548135] [2023-11-23 07:39:29,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865548135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:29,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:29,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:39:29,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143075725] [2023-11-23 07:39:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:29,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:39:29,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:39:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:39:29,716 INFO L87 Difference]: Start difference. First operand 441 states and 665 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-23 07:39:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:30,734 INFO L93 Difference]: Finished difference Result 819 states and 1254 transitions. [2023-11-23 07:39:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:39:30,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 195 [2023-11-23 07:39:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:30,738 INFO L225 Difference]: With dead ends: 819 [2023-11-23 07:39:30,739 INFO L226 Difference]: Without dead ends: 443 [2023-11-23 07:39:30,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:39:30,742 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 76 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:30,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2626 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:39:30,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-23 07:39:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-11-23 07:39:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 250 states have (on average 1.256) internal successors, (314), 255 states have internal predecessors, (314), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2023-11-23 07:39:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 677 transitions. [2023-11-23 07:39:30,778 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 677 transitions. Word has length 195 [2023-11-23 07:39:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:30,780 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 677 transitions. [2023-11-23 07:39:30,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-23 07:39:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 677 transitions. [2023-11-23 07:39:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-23 07:39:30,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:30,784 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 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, 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, 1] [2023-11-23 07:39:30,810 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 07:39:31,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:31,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:31,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash 379526939, now seen corresponding path program 1 times [2023-11-23 07:39:31,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:31,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080377188] [2023-11-23 07:39:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:31,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:31,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860912348] [2023-11-23 07:39:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:31,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:31,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:31,128 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 07:39:31,146 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 07:39:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:31,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 3581 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:39:31,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 07:39:32,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:32,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080377188] [2023-11-23 07:39:32,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860912348] [2023-11-23 07:39:32,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860912348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:32,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:32,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:39:32,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679792174] [2023-11-23 07:39:32,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:32,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:39:32,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:39:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:39:32,069 INFO L87 Difference]: Start difference. First operand 443 states and 677 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 07:39:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:33,604 INFO L93 Difference]: Finished difference Result 837 states and 1298 transitions. [2023-11-23 07:39:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:39:33,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 203 [2023-11-23 07:39:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:33,608 INFO L225 Difference]: With dead ends: 837 [2023-11-23 07:39:33,608 INFO L226 Difference]: Without dead ends: 459 [2023-11-23 07:39:33,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:39:33,612 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 112 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:33,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 3618 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 07:39:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-23 07:39:33,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2023-11-23 07:39:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 267 states have internal predecessors, (332), 163 states have call successors, (163), 27 states have call predecessors, (163), 29 states have return successors, (202), 163 states have call predecessors, (202), 161 states have call successors, (202) [2023-11-23 07:39:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 697 transitions. [2023-11-23 07:39:33,642 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 697 transitions. Word has length 203 [2023-11-23 07:39:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:33,642 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 697 transitions. [2023-11-23 07:39:33,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 07:39:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 697 transitions. [2023-11-23 07:39:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-23 07:39:33,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:33,645 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:33,668 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 07:39:33,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:33,865 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:33,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:33,865 INFO L85 PathProgramCache]: Analyzing trace with hash -291827149, now seen corresponding path program 2 times [2023-11-23 07:39:33,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:33,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356062646] [2023-11-23 07:39:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:33,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:34,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834144957] [2023-11-23 07:39:34,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:39:34,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:34,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:34,023 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 07:39:34,043 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 07:39:34,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:39:34,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:39:34,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 3776 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:39:34,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-23 07:39:34,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:34,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:34,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356062646] [2023-11-23 07:39:34,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:34,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834144957] [2023-11-23 07:39:34,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834144957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:34,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:34,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:39:34,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473399290] [2023-11-23 07:39:34,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:34,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:39:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:39:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:39:35,002 INFO L87 Difference]: Start difference. First operand 457 states and 697 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 07:39:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:36,476 INFO L93 Difference]: Finished difference Result 855 states and 1332 transitions. [2023-11-23 07:39:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:39:36,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 216 [2023-11-23 07:39:36,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:36,481 INFO L225 Difference]: With dead ends: 855 [2023-11-23 07:39:36,481 INFO L226 Difference]: Without dead ends: 463 [2023-11-23 07:39:36,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:39:36,486 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 95 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:36,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 3111 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 07:39:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-23 07:39:36,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 457. [2023-11-23 07:39:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 267 states have internal predecessors, (332), 163 states have call successors, (163), 27 states have call predecessors, (163), 29 states have return successors, (202), 163 states have call predecessors, (202), 161 states have call successors, (202) [2023-11-23 07:39:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 697 transitions. [2023-11-23 07:39:36,517 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 697 transitions. Word has length 216 [2023-11-23 07:39:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:36,517 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 697 transitions. [2023-11-23 07:39:36,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 07:39:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 697 transitions. [2023-11-23 07:39:36,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-23 07:39:36,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:36,521 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-11-23 07:39:36,547 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 07:39:36,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:36,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:36,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:36,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1868415189, now seen corresponding path program 1 times [2023-11-23 07:39:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:36,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258022543] [2023-11-23 07:39:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:36,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:36,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684437427] [2023-11-23 07:39:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:36,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:36,873 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 07:39:36,892 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 07:39:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:37,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 3899 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 07:39:37,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-23 07:39:37,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:37,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:37,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258022543] [2023-11-23 07:39:37,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:37,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684437427] [2023-11-23 07:39:37,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684437427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:37,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:37,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:39:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603476149] [2023-11-23 07:39:37,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:37,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:39:37,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:39:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:39:37,949 INFO L87 Difference]: Start difference. First operand 457 states and 697 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-23 07:39:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:39,379 INFO L93 Difference]: Finished difference Result 849 states and 1304 transitions. [2023-11-23 07:39:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:39:39,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) Word has length 232 [2023-11-23 07:39:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:39,383 INFO L225 Difference]: With dead ends: 849 [2023-11-23 07:39:39,384 INFO L226 Difference]: Without dead ends: 457 [2023-11-23 07:39:39,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:39:39,387 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 155 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 3981 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:39,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 3981 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:39:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-23 07:39:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 441. [2023-11-23 07:39:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 249 states have (on average 1.2570281124497993) internal successors, (313), 253 states have internal predecessors, (313), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (188), 161 states have call predecessors, (188), 160 states have call successors, (188) [2023-11-23 07:39:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 663 transitions. [2023-11-23 07:39:39,416 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 663 transitions. Word has length 232 [2023-11-23 07:39:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:39,416 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 663 transitions. [2023-11-23 07:39:39,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-23 07:39:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 663 transitions. [2023-11-23 07:39:39,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-23 07:39:39,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:39,419 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-23 07:39:39,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:39,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 07:39:39,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:39,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1908718835, now seen corresponding path program 2 times [2023-11-23 07:39:39,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:39,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925514786] [2023-11-23 07:39:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:39,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:39,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980451815] [2023-11-23 07:39:39,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:39:39,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:39,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:39,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:39,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 07:39:40,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:39:40,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:39:40,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 4094 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:39:40,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-11-23 07:39:40,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:40,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925514786] [2023-11-23 07:39:40,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980451815] [2023-11-23 07:39:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980451815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:40,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:40,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:39:40,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884586142] [2023-11-23 07:39:40,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:40,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:39:40,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:40,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:39:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:39:40,828 INFO L87 Difference]: Start difference. First operand 441 states and 663 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-23 07:39:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:42,397 INFO L93 Difference]: Finished difference Result 820 states and 1243 transitions. [2023-11-23 07:39:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:39:42,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 245 [2023-11-23 07:39:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:42,401 INFO L225 Difference]: With dead ends: 820 [2023-11-23 07:39:42,402 INFO L226 Difference]: Without dead ends: 452 [2023-11-23 07:39:42,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:39:42,405 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 69 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:42,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 3675 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 07:39:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-11-23 07:39:42,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2023-11-23 07:39:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 254 states have (on average 1.2559055118110236) internal successors, (319), 258 states have internal predecessors, (319), 167 states have call successors, (167), 28 states have call predecessors, (167), 29 states have return successors, (193), 166 states have call predecessors, (193), 165 states have call successors, (193) [2023-11-23 07:39:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 679 transitions. [2023-11-23 07:39:42,437 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 679 transitions. Word has length 245 [2023-11-23 07:39:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:42,438 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 679 transitions. [2023-11-23 07:39:42,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-23 07:39:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 679 transitions. [2023-11-23 07:39:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-23 07:39:42,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:42,441 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2023-11-23 07:39:42,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:42,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 07:39:42,652 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:42,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash -858047577, now seen corresponding path program 1 times [2023-11-23 07:39:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:42,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125858512] [2023-11-23 07:39:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:42,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:42,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:42,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788652330] [2023-11-23 07:39:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:42,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:42,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:42,801 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:42,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 07:39:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 4484 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 07:39:43,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-23 07:39:43,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:43,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:43,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125858512] [2023-11-23 07:39:43,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:43,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788652330] [2023-11-23 07:39:43,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788652330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:43,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:43,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:39:43,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663206260] [2023-11-23 07:39:43,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:43,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:39:43,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:39:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:39:43,964 INFO L87 Difference]: Start difference. First operand 452 states and 679 transitions. Second operand has 9 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 07:39:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:44,434 INFO L93 Difference]: Finished difference Result 875 states and 1321 transitions. [2023-11-23 07:39:44,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:39:44,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 271 [2023-11-23 07:39:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:44,439 INFO L225 Difference]: With dead ends: 875 [2023-11-23 07:39:44,439 INFO L226 Difference]: Without dead ends: 454 [2023-11-23 07:39:44,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:39:44,441 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 3 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4316 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:44,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4316 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:39:44,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-23 07:39:44,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2023-11-23 07:39:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 255 states have (on average 1.2549019607843137) internal successors, (320), 260 states have internal predecessors, (320), 167 states have call successors, (167), 28 states have call predecessors, (167), 30 states have return successors, (196), 166 states have call predecessors, (196), 165 states have call successors, (196) [2023-11-23 07:39:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 683 transitions. [2023-11-23 07:39:44,479 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 683 transitions. Word has length 271 [2023-11-23 07:39:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:44,480 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 683 transitions. [2023-11-23 07:39:44,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-23 07:39:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 683 transitions. [2023-11-23 07:39:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 07:39:44,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:44,483 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2023-11-23 07:39:44,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:44,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 07:39:44,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:44,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash -183111039, now seen corresponding path program 1 times [2023-11-23 07:39:44,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:44,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656413878] [2023-11-23 07:39:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:44,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:44,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:44,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189741521] [2023-11-23 07:39:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:44,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:44,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:44,842 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:44,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 07:39:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:45,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 4518 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 07:39:45,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-23 07:39:45,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:39:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2023-11-23 07:39:46,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656413878] [2023-11-23 07:39:46,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189741521] [2023-11-23 07:39:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189741521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:39:46,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:39:46,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-11-23 07:39:46,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050637684] [2023-11-23 07:39:46,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:39:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:39:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:39:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:39:46,223 INFO L87 Difference]: Start difference. First operand 454 states and 683 transitions. Second operand has 7 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (42), 4 states have call predecessors, (42), 3 states have call successors, (42) [2023-11-23 07:39:47,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:47,287 INFO L93 Difference]: Finished difference Result 898 states and 1363 transitions. [2023-11-23 07:39:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:39:47,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (42), 4 states have call predecessors, (42), 3 states have call successors, (42) Word has length 281 [2023-11-23 07:39:47,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:47,291 INFO L225 Difference]: With dead ends: 898 [2023-11-23 07:39:47,292 INFO L226 Difference]: Without dead ends: 506 [2023-11-23 07:39:47,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:39:47,295 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 37 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:47,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3541 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:39:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-23 07:39:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 467. [2023-11-23 07:39:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 265 states have (on average 1.2566037735849056) internal successors, (333), 269 states have internal predecessors, (333), 170 states have call successors, (170), 28 states have call predecessors, (170), 30 states have return successors, (201), 170 states have call predecessors, (201), 168 states have call successors, (201) [2023-11-23 07:39:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 704 transitions. [2023-11-23 07:39:47,328 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 704 transitions. Word has length 281 [2023-11-23 07:39:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:47,329 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 704 transitions. [2023-11-23 07:39:47,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (42), 4 states have call predecessors, (42), 3 states have call successors, (42) [2023-11-23 07:39:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 704 transitions. [2023-11-23 07:39:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 07:39:47,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:47,331 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2023-11-23 07:39:47,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-23 07:39:47,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 07:39:47,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:47,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash -723540545, now seen corresponding path program 1 times [2023-11-23 07:39:47,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:47,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086960576] [2023-11-23 07:39:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:47,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13899904] [2023-11-23 07:39:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:47,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:47,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:47,669 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:47,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:39:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:48,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 4515 conjuncts, 99 conjunts are in the unsatisfiable core [2023-11-23 07:39:48,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:48,952 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 07:39:48,955 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 07:39:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-23 07:39:49,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:49,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:49,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086960576] [2023-11-23 07:39:49,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:49,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13899904] [2023-11-23 07:39:49,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13899904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:49,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:49,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 07:39:49,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825098388] [2023-11-23 07:39:49,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:49,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:39:49,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:39:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:39:49,641 INFO L87 Difference]: Start difference. First operand 467 states and 704 transitions. Second operand has 14 states, 14 states have (on average 8.0) internal successors, (112), 14 states have internal predecessors, (112), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:39:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:55,215 INFO L93 Difference]: Finished difference Result 994 states and 1572 transitions. [2023-11-23 07:39:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:39:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 14 states have internal predecessors, (112), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 281 [2023-11-23 07:39:55,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:55,219 INFO L225 Difference]: With dead ends: 994 [2023-11-23 07:39:55,219 INFO L226 Difference]: Without dead ends: 558 [2023-11-23 07:39:55,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:39:55,221 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 299 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 4269 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 4492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 4269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:55,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 2412 Invalid, 4492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 4269 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-23 07:39:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-23 07:39:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 492. [2023-11-23 07:39:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 292 states have internal predecessors, (366), 170 states have call successors, (170), 28 states have call predecessors, (170), 31 states have return successors, (220), 172 states have call predecessors, (220), 168 states have call successors, (220) [2023-11-23 07:39:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 756 transitions. [2023-11-23 07:39:55,258 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 756 transitions. Word has length 281 [2023-11-23 07:39:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:55,258 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 756 transitions. [2023-11-23 07:39:55,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 14 states have internal predecessors, (112), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:39:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 756 transitions. [2023-11-23 07:39:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 07:39:55,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:55,261 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 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] [2023-11-23 07:39:55,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:55,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 07:39:55,480 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:55,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:55,481 INFO L85 PathProgramCache]: Analyzing trace with hash 21950011, now seen corresponding path program 1 times [2023-11-23 07:39:55,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:55,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195265343] [2023-11-23 07:39:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:55,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:55,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186083084] [2023-11-23 07:39:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:55,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:55,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:55,599 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:55,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:39:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:56,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 4505 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:39:56,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-23 07:39:56,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:56,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:56,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195265343] [2023-11-23 07:39:56,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:56,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186083084] [2023-11-23 07:39:56,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186083084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:56,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:56,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:39:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653458686] [2023-11-23 07:39:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:56,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:39:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:39:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:39:56,674 INFO L87 Difference]: Start difference. First operand 492 states and 756 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:39:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:56,794 INFO L93 Difference]: Finished difference Result 956 states and 1542 transitions. [2023-11-23 07:39:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:39:56,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 281 [2023-11-23 07:39:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:56,799 INFO L225 Difference]: With dead ends: 956 [2023-11-23 07:39:56,799 INFO L226 Difference]: Without dead ends: 495 [2023-11-23 07:39:56,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:39:56,803 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 7 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:56,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1744 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:39:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-11-23 07:39:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2023-11-23 07:39:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 289 states have (on average 1.2629757785467128) internal successors, (365), 292 states have internal predecessors, (365), 170 states have call successors, (170), 28 states have call predecessors, (170), 31 states have return successors, (220), 172 states have call predecessors, (220), 168 states have call successors, (220) [2023-11-23 07:39:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 755 transitions. [2023-11-23 07:39:56,840 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 755 transitions. Word has length 281 [2023-11-23 07:39:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:56,841 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 755 transitions. [2023-11-23 07:39:56,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:39:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 755 transitions. [2023-11-23 07:39:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-23 07:39:56,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:56,844 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 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] [2023-11-23 07:39:56,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:57,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 07:39:57,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:57,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:57,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1111079095, now seen corresponding path program 1 times [2023-11-23 07:39:57,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:57,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544215505] [2023-11-23 07:39:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:57,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:57,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:57,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128741303] [2023-11-23 07:39:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:57,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:57,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:57,186 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:57,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 07:39:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:58,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 4535 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:39:58,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-23 07:39:58,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:58,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:58,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544215505] [2023-11-23 07:39:58,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:58,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128741303] [2023-11-23 07:39:58,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128741303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:58,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:58,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:39:58,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980289993] [2023-11-23 07:39:58,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:58,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:39:58,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:39:58,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:39:58,602 INFO L87 Difference]: Start difference. First operand 492 states and 755 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 07:39:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:58,937 INFO L93 Difference]: Finished difference Result 901 states and 1391 transitions. [2023-11-23 07:39:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:39:58,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) Word has length 285 [2023-11-23 07:39:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:58,942 INFO L225 Difference]: With dead ends: 901 [2023-11-23 07:39:58,942 INFO L226 Difference]: Without dead ends: 492 [2023-11-23 07:39:58,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 281 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 07:39:58,948 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 2 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:58,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2094 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:39:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-23 07:39:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2023-11-23 07:39:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 289 states have (on average 1.259515570934256) internal successors, (364), 292 states have internal predecessors, (364), 170 states have call successors, (170), 28 states have call predecessors, (170), 31 states have return successors, (220), 172 states have call predecessors, (220), 168 states have call successors, (220) [2023-11-23 07:39:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 754 transitions. [2023-11-23 07:39:58,989 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 754 transitions. Word has length 285 [2023-11-23 07:39:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:58,990 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 754 transitions. [2023-11-23 07:39:58,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 07:39:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 754 transitions. [2023-11-23 07:39:58,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-23 07:39:58,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:58,993 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 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] [2023-11-23 07:39:59,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:59,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:59,200 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:59,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:59,201 INFO L85 PathProgramCache]: Analyzing trace with hash 157138937, now seen corresponding path program 1 times [2023-11-23 07:39:59,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:59,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91618505] [2023-11-23 07:39:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:59,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:59,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818075010] [2023-11-23 07:39:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:59,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:59,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:59,325 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:59,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 07:40:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:00,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 4538 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:40:00,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-23 07:40:00,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:00,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91618505] [2023-11-23 07:40:00,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818075010] [2023-11-23 07:40:00,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818075010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:00,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:00,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:40:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836697661] [2023-11-23 07:40:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:00,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:40:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:40:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:40:00,470 INFO L87 Difference]: Start difference. First operand 492 states and 754 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 07:40:00,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:00,888 INFO L93 Difference]: Finished difference Result 909 states and 1402 transitions. [2023-11-23 07:40:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:40:00,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 285 [2023-11-23 07:40:00,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:00,893 INFO L225 Difference]: With dead ends: 909 [2023-11-23 07:40:00,893 INFO L226 Difference]: Without dead ends: 479 [2023-11-23 07:40:00,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:40:00,896 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 4 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:00,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2881 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:40:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-23 07:40:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2023-11-23 07:40:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 279 states have (on average 1.2544802867383513) internal successors, (350), 283 states have internal predecessors, (350), 167 states have call successors, (167), 28 states have call predecessors, (167), 31 states have return successors, (214), 168 states have call predecessors, (214), 165 states have call successors, (214) [2023-11-23 07:40:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 731 transitions. [2023-11-23 07:40:00,932 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 731 transitions. Word has length 285 [2023-11-23 07:40:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:00,932 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 731 transitions. [2023-11-23 07:40:00,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 07:40:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 731 transitions. [2023-11-23 07:40:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-23 07:40:00,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:00,935 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 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, 1] [2023-11-23 07:40:00,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:01,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 07:40:01,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:01,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:01,141 INFO L85 PathProgramCache]: Analyzing trace with hash -594301919, now seen corresponding path program 1 times [2023-11-23 07:40:01,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:01,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114210454] [2023-11-23 07:40:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:01,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:01,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498592787] [2023-11-23 07:40:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:01,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:01,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:01,276 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:01,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 07:40:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:03,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 4575 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:40:03,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-23 07:40:03,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:03,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:03,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114210454] [2023-11-23 07:40:03,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:03,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498592787] [2023-11-23 07:40:03,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498592787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:03,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:03,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:40:03,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401374287] [2023-11-23 07:40:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:03,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:40:03,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:04,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:40:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:40:04,001 INFO L87 Difference]: Start difference. First operand 479 states and 731 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 07:40:04,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:04,941 INFO L93 Difference]: Finished difference Result 934 states and 1514 transitions. [2023-11-23 07:40:04,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:40:04,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 295 [2023-11-23 07:40:04,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:04,946 INFO L225 Difference]: With dead ends: 934 [2023-11-23 07:40:04,946 INFO L226 Difference]: Without dead ends: 486 [2023-11-23 07:40:04,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:40:04,951 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 15 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:04,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2246 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:40:04,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-23 07:40:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 480. [2023-11-23 07:40:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 280 states have (on average 1.2535714285714286) internal successors, (351), 284 states have internal predecessors, (351), 167 states have call successors, (167), 28 states have call predecessors, (167), 31 states have return successors, (214), 168 states have call predecessors, (214), 165 states have call successors, (214) [2023-11-23 07:40:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 732 transitions. [2023-11-23 07:40:04,987 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 732 transitions. Word has length 295 [2023-11-23 07:40:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:04,988 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 732 transitions. [2023-11-23 07:40:04,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 07:40:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 732 transitions. [2023-11-23 07:40:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-23 07:40:04,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:04,991 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 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, 1] [2023-11-23 07:40:05,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 07:40:05,212 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:05,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1603036957, now seen corresponding path program 1 times [2023-11-23 07:40:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:05,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140961108] [2023-11-23 07:40:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:05,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:05,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645240488] [2023-11-23 07:40:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:05,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:05,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:05,334 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:05,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 07:40:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:07,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 4565 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-23 07:40:07,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:07,867 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 07:40:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 07:40:08,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:08,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:08,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140961108] [2023-11-23 07:40:08,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:08,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645240488] [2023-11-23 07:40:08,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645240488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:08,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:08,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 07:40:08,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840307650] [2023-11-23 07:40:08,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:08,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 07:40:08,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:08,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 07:40:08,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:40:08,263 INFO L87 Difference]: Start difference. First operand 480 states and 732 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:12,419 INFO L93 Difference]: Finished difference Result 1020 states and 1628 transitions. [2023-11-23 07:40:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:40:12,419 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 295 [2023-11-23 07:40:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:12,424 INFO L225 Difference]: With dead ends: 1020 [2023-11-23 07:40:12,424 INFO L226 Difference]: Without dead ends: 571 [2023-11-23 07:40:12,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:40:12,429 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 292 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 3848 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 4070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 3848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:12,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1961 Invalid, 4070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 3848 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 07:40:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-11-23 07:40:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2023-11-23 07:40:12,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 299 states have (on average 1.2642140468227425) internal successors, (378), 302 states have internal predecessors, (378), 167 states have call successors, (167), 28 states have call predecessors, (167), 32 states have return successors, (233), 170 states have call predecessors, (233), 165 states have call successors, (233) [2023-11-23 07:40:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 778 transitions. [2023-11-23 07:40:12,518 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 778 transitions. Word has length 295 [2023-11-23 07:40:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:12,519 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 778 transitions. [2023-11-23 07:40:12,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 13 states have internal predecessors, (116), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:12,519 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 778 transitions. [2023-11-23 07:40:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-23 07:40:12,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:12,523 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:12,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 07:40:12,729 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:12,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1387639003, now seen corresponding path program 1 times [2023-11-23 07:40:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:12,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640981328] [2023-11-23 07:40:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:12,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:12,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156014497] [2023-11-23 07:40:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:12,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:12,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:12,820 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:12,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 07:40:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:14,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 4570 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-23 07:40:14,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:14,904 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 07:40:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 07:40:15,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:15,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:15,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640981328] [2023-11-23 07:40:15,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:15,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156014497] [2023-11-23 07:40:15,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156014497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:15,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:15,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:40:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250373890] [2023-11-23 07:40:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:15,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:40:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:40:15,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:40:15,172 INFO L87 Difference]: Start difference. First operand 500 states and 778 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:17,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:21,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:21,280 INFO L93 Difference]: Finished difference Result 1068 states and 1730 transitions. [2023-11-23 07:40:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:40:21,281 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 295 [2023-11-23 07:40:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:21,286 INFO L225 Difference]: With dead ends: 1068 [2023-11-23 07:40:21,286 INFO L226 Difference]: Without dead ends: 599 [2023-11-23 07:40:21,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:40:21,291 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 279 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 218 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:21,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1892 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 3238 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-11-23 07:40:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-11-23 07:40:21,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 522. [2023-11-23 07:40:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 320 states have (on average 1.2625) internal successors, (404), 321 states have internal predecessors, (404), 167 states have call successors, (167), 28 states have call predecessors, (167), 33 states have return successors, (252), 173 states have call predecessors, (252), 165 states have call successors, (252) [2023-11-23 07:40:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 823 transitions. [2023-11-23 07:40:21,340 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 823 transitions. Word has length 295 [2023-11-23 07:40:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:21,340 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 823 transitions. [2023-11-23 07:40:21,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 7 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 823 transitions. [2023-11-23 07:40:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-23 07:40:21,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:21,344 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:21,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:21,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:21,564 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:21,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:21,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1582472099, now seen corresponding path program 1 times [2023-11-23 07:40:21,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:21,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506082832] [2023-11-23 07:40:21,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:21,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:21,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837050898] [2023-11-23 07:40:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:21,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:21,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:21,689 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:21,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 07:40:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:25,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 4567 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:40:25,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-11-23 07:40:25,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:25,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506082832] [2023-11-23 07:40:25,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837050898] [2023-11-23 07:40:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837050898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:25,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:25,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:40:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662063638] [2023-11-23 07:40:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:25,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:40:25,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:40:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:40:25,094 INFO L87 Difference]: Start difference. First operand 522 states and 823 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:25,820 INFO L93 Difference]: Finished difference Result 1100 states and 1751 transitions. [2023-11-23 07:40:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:40:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 295 [2023-11-23 07:40:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:25,825 INFO L225 Difference]: With dead ends: 1100 [2023-11-23 07:40:25,825 INFO L226 Difference]: Without dead ends: 609 [2023-11-23 07:40:25,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:40:25,829 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 21 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:25,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2747 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:40:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-23 07:40:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 536. [2023-11-23 07:40:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 334 states have (on average 1.2664670658682635) internal successors, (423), 335 states have internal predecessors, (423), 167 states have call successors, (167), 28 states have call predecessors, (167), 33 states have return successors, (252), 173 states have call predecessors, (252), 165 states have call successors, (252) [2023-11-23 07:40:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 842 transitions. [2023-11-23 07:40:25,870 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 842 transitions. Word has length 295 [2023-11-23 07:40:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:25,870 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 842 transitions. [2023-11-23 07:40:25,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:25,871 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 842 transitions. [2023-11-23 07:40:25,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-23 07:40:25,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:25,873 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 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, 1] [2023-11-23 07:40:25,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:26,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:26,084 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:26,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1699591709, now seen corresponding path program 1 times [2023-11-23 07:40:26,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:26,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455278981] [2023-11-23 07:40:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:26,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:26,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068782617] [2023-11-23 07:40:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:26,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:26,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:26,176 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:26,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 07:40:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:27,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 4569 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:40:27,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-23 07:40:27,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455278981] [2023-11-23 07:40:27,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068782617] [2023-11-23 07:40:27,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068782617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:27,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:40:27,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791829785] [2023-11-23 07:40:27,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:27,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:40:27,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:27,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:40:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:40:27,398 INFO L87 Difference]: Start difference. First operand 536 states and 842 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:27,508 INFO L93 Difference]: Finished difference Result 1058 states and 1695 transitions. [2023-11-23 07:40:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:40:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 295 [2023-11-23 07:40:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:27,513 INFO L225 Difference]: With dead ends: 1058 [2023-11-23 07:40:27,513 INFO L226 Difference]: Without dead ends: 553 [2023-11-23 07:40:27,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:40:27,518 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 3 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:27,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1730 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:40:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-11-23 07:40:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 538. [2023-11-23 07:40:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 336 states have (on average 1.2619047619047619) internal successors, (424), 337 states have internal predecessors, (424), 167 states have call successors, (167), 28 states have call predecessors, (167), 33 states have return successors, (252), 173 states have call predecessors, (252), 165 states have call successors, (252) [2023-11-23 07:40:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 843 transitions. [2023-11-23 07:40:27,556 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 843 transitions. Word has length 295 [2023-11-23 07:40:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:27,556 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 843 transitions. [2023-11-23 07:40:27,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 843 transitions. [2023-11-23 07:40:27,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-23 07:40:27,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:27,560 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:27,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:27,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-23 07:40:27,784 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:27,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash 744690271, now seen corresponding path program 1 times [2023-11-23 07:40:27,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:27,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398179839] [2023-11-23 07:40:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:27,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:27,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:27,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575349232] [2023-11-23 07:40:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:27,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:27,894 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:27,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-23 07:40:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:29,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 4562 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:40:29,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-23 07:40:29,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:29,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398179839] [2023-11-23 07:40:29,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575349232] [2023-11-23 07:40:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575349232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:40:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992309559] [2023-11-23 07:40:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:29,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:40:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:40:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:40:29,325 INFO L87 Difference]: Start difference. First operand 538 states and 843 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:29,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:29,447 INFO L93 Difference]: Finished difference Result 1097 states and 1741 transitions. [2023-11-23 07:40:29,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:40:29,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 295 [2023-11-23 07:40:29,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:29,452 INFO L225 Difference]: With dead ends: 1097 [2023-11-23 07:40:29,452 INFO L226 Difference]: Without dead ends: 590 [2023-11-23 07:40:29,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 291 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 07:40:29,457 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 6 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:29,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2330 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:40:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-11-23 07:40:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 534. [2023-11-23 07:40:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 332 states have (on average 1.2590361445783131) internal successors, (418), 333 states have internal predecessors, (418), 167 states have call successors, (167), 28 states have call predecessors, (167), 33 states have return successors, (252), 173 states have call predecessors, (252), 165 states have call successors, (252) [2023-11-23 07:40:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 837 transitions. [2023-11-23 07:40:29,493 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 837 transitions. Word has length 295 [2023-11-23 07:40:29,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:29,494 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 837 transitions. [2023-11-23 07:40:29,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 837 transitions. [2023-11-23 07:40:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-23 07:40:29,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:29,497 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:29,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:29,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-23 07:40:29,716 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:29,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1437571551, now seen corresponding path program 1 times [2023-11-23 07:40:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:29,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124068824] [2023-11-23 07:40:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:29,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:29,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:29,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69200338] [2023-11-23 07:40:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:29,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:29,858 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:29,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-23 07:40:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:31,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 4564 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:40:31,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-23 07:40:31,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124068824] [2023-11-23 07:40:31,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69200338] [2023-11-23 07:40:31,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69200338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:31,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:31,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:40:31,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812973869] [2023-11-23 07:40:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:40:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:40:31,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:40:31,066 INFO L87 Difference]: Start difference. First operand 534 states and 837 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:31,199 INFO L93 Difference]: Finished difference Result 1039 states and 1663 transitions. [2023-11-23 07:40:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:40:31,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 295 [2023-11-23 07:40:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:31,204 INFO L225 Difference]: With dead ends: 1039 [2023-11-23 07:40:31,204 INFO L226 Difference]: Without dead ends: 536 [2023-11-23 07:40:31,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:40:31,209 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 2 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:31,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1733 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:40:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-11-23 07:40:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 513. [2023-11-23 07:40:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 312 states have (on average 1.233974358974359) internal successors, (385), 314 states have internal predecessors, (385), 167 states have call successors, (167), 28 states have call predecessors, (167), 32 states have return successors, (233), 171 states have call predecessors, (233), 165 states have call successors, (233) [2023-11-23 07:40:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 785 transitions. [2023-11-23 07:40:31,244 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 785 transitions. Word has length 295 [2023-11-23 07:40:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:31,245 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 785 transitions. [2023-11-23 07:40:31,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 785 transitions. [2023-11-23 07:40:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-23 07:40:31,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:31,247 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 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, 1] [2023-11-23 07:40:31,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:31,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:31,460 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:31,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash -311356767, now seen corresponding path program 1 times [2023-11-23 07:40:31,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924363068] [2023-11-23 07:40:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:31,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:31,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:31,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465117084] [2023-11-23 07:40:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:31,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:31,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:31,550 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:31,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-23 07:40:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:36,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 4559 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-23 07:40:36,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:36,167 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 07:40:36,169 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 07:40:37,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:40:37,403 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 42 treesize of output 38 [2023-11-23 07:40:37,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:40:37,413 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 34 treesize of output 30 [2023-11-23 07:40:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 07:40:37,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:37,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:37,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924363068] [2023-11-23 07:40:37,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:37,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465117084] [2023-11-23 07:40:37,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465117084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:37,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:37,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-23 07:40:37,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096942464] [2023-11-23 07:40:37,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:37,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 07:40:37,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 07:40:37,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:40:37,466 INFO L87 Difference]: Start difference. First operand 513 states and 785 transitions. Second operand has 23 states, 21 states have (on average 5.857142857142857) internal successors, (123), 20 states have internal predecessors, (123), 10 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 12 states have call predecessors, (34), 10 states have call successors, (34) [2023-11-23 07:40:40,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:42,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:44,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:46,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:48,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:50,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:52,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:55,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:57,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:40:59,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:01,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:07,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:12,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:15,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:17,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:20,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:23,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:25,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:41:28,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:30,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:32,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:32,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:41:32,258 INFO L93 Difference]: Finished difference Result 1634 states and 2548 transitions. [2023-11-23 07:41:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 07:41:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.857142857142857) internal successors, (123), 20 states have internal predecessors, (123), 10 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 12 states have call predecessors, (34), 10 states have call successors, (34) Word has length 295 [2023-11-23 07:41:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:41:32,271 INFO L225 Difference]: With dead ends: 1634 [2023-11-23 07:41:32,271 INFO L226 Difference]: Without dead ends: 1156 [2023-11-23 07:41:32,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 270 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=334, Invalid=2317, Unknown=1, NotChecked=0, Total=2652 [2023-11-23 07:41:32,274 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 814 mSDsluCounter, 4035 mSDsCounter, 0 mSdLazyCounter, 7846 mSolverCounterSat, 777 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 4418 SdHoareTripleChecker+Invalid, 8663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 7846 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:41:32,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 4418 Invalid, 8663 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [777 Valid, 7846 Invalid, 40 Unknown, 0 Unchecked, 53.7s Time] [2023-11-23 07:41:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-11-23 07:41:32,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1084. [2023-11-23 07:41:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 672 states have (on average 1.2380952380952381) internal successors, (832), 675 states have internal predecessors, (832), 346 states have call successors, (346), 52 states have call predecessors, (346), 64 states have return successors, (525), 358 states have call predecessors, (525), 343 states have call successors, (525) [2023-11-23 07:41:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1703 transitions. [2023-11-23 07:41:32,361 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1703 transitions. Word has length 295 [2023-11-23 07:41:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:41:32,361 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1703 transitions. [2023-11-23 07:41:32,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.857142857142857) internal successors, (123), 20 states have internal predecessors, (123), 10 states have call successors, (35), 4 states have call predecessors, (35), 8 states have return successors, (34), 12 states have call predecessors, (34), 10 states have call successors, (34) [2023-11-23 07:41:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1703 transitions. [2023-11-23 07:41:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-11-23 07:41:32,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:41:32,364 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:41:32,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-23 07:41:32,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:41:32,587 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:41:32,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:41:32,587 INFO L85 PathProgramCache]: Analyzing trace with hash 164411403, now seen corresponding path program 1 times [2023-11-23 07:41:32,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:41:32,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736122032] [2023-11-23 07:41:32,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:41:32,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:41:32,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:41:32,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070694400] [2023-11-23 07:41:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:41:32,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:41:32,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:41:32,683 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:41:32,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-23 07:41:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:41:35,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 4581 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:41:35,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:41:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-23 07:41:35,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:41:35,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:41:35,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736122032] [2023-11-23 07:41:35,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:41:35,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070694400] [2023-11-23 07:41:35,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070694400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:41:35,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:41:35,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:41:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629145063] [2023-11-23 07:41:35,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:41:35,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:41:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:41:35,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:41:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:41:35,744 INFO L87 Difference]: Start difference. First operand 1084 states and 1703 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-23 07:41:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:41:35,917 INFO L93 Difference]: Finished difference Result 2151 states and 3519 transitions. [2023-11-23 07:41:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:41:35,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 300 [2023-11-23 07:41:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:41:35,926 INFO L225 Difference]: With dead ends: 2151 [2023-11-23 07:41:35,926 INFO L226 Difference]: Without dead ends: 1092 [2023-11-23 07:41:35,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:41:35,934 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 6 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:41:35,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1719 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:41:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2023-11-23 07:41:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1086. [2023-11-23 07:41:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 674 states have (on average 1.2373887240356083) internal successors, (834), 677 states have internal predecessors, (834), 346 states have call successors, (346), 52 states have call predecessors, (346), 64 states have return successors, (525), 358 states have call predecessors, (525), 343 states have call successors, (525) [2023-11-23 07:41:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1705 transitions. [2023-11-23 07:41:36,026 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1705 transitions. Word has length 300 [2023-11-23 07:41:36,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:41:36,026 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1705 transitions. [2023-11-23 07:41:36,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-23 07:41:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1705 transitions. [2023-11-23 07:41:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-11-23 07:41:36,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:41:36,030 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:41:36,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-23 07:41:36,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-23 07:41:36,244 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:41:36,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:41:36,245 INFO L85 PathProgramCache]: Analyzing trace with hash 762702388, now seen corresponding path program 1 times [2023-11-23 07:41:36,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:41:36,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388268441] [2023-11-23 07:41:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:41:36,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:41:36,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:41:36,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202796627] [2023-11-23 07:41:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:41:36,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:41:36,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:41:36,377 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:41:36,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-23 07:41:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:41:37,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 4584 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 07:41:37,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:41:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-23 07:41:37,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:41:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:41:37,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388268441] [2023-11-23 07:41:37,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:41:37,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202796627] [2023-11-23 07:41:37,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202796627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:41:37,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:41:37,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 07:41:37,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343421951] [2023-11-23 07:41:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:41:37,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:41:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:41:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:41:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:41:37,882 INFO L87 Difference]: Start difference. First operand 1086 states and 1705 transitions. Second operand has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-23 07:41:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:41:38,326 INFO L93 Difference]: Finished difference Result 2179 states and 3529 transitions. [2023-11-23 07:41:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:41:38,327 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 300 [2023-11-23 07:41:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:41:38,336 INFO L225 Difference]: With dead ends: 2179 [2023-11-23 07:41:38,336 INFO L226 Difference]: Without dead ends: 1124 [2023-11-23 07:41:38,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:41:38,343 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 5 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:41:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4913 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:41:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2023-11-23 07:41:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1098. [2023-11-23 07:41:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 683 states have (on average 1.2342606149341142) internal successors, (843), 687 states have internal predecessors, (843), 346 states have call successors, (346), 52 states have call predecessors, (346), 67 states have return successors, (570), 360 states have call predecessors, (570), 343 states have call successors, (570) [2023-11-23 07:41:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1759 transitions. [2023-11-23 07:41:38,437 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1759 transitions. Word has length 300 [2023-11-23 07:41:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:41:38,437 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1759 transitions. [2023-11-23 07:41:38,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-23 07:41:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1759 transitions. [2023-11-23 07:41:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-11-23 07:41:38,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:41:38,441 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:41:38,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-23 07:41:38,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-23 07:41:38,669 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:41:38,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:41:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash -533854944, now seen corresponding path program 1 times [2023-11-23 07:41:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:41:38,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338915501] [2023-11-23 07:41:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:41:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:41:38,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:41:38,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028828047] [2023-11-23 07:41:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:41:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:41:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:41:38,759 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:41:38,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-23 07:41:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:41:40,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 4588 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:41:40,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:41:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 272 proven. 1 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-23 07:41:40,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:41:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2023-11-23 07:41:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:41:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338915501] [2023-11-23 07:41:40,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:41:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028828047] [2023-11-23 07:41:40,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028828047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:41:40,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:41:40,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 07:41:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490974304] [2023-11-23 07:41:40,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:41:40,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:41:40,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:41:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:41:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:41:40,881 INFO L87 Difference]: Start difference. First operand 1098 states and 1759 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-23 07:41:41,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:41:41,165 INFO L93 Difference]: Finished difference Result 2203 states and 3701 transitions. [2023-11-23 07:41:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:41:41,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 302 [2023-11-23 07:41:41,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:41:41,173 INFO L225 Difference]: With dead ends: 2203 [2023-11-23 07:41:41,173 INFO L226 Difference]: Without dead ends: 1124 [2023-11-23 07:41:41,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:41:41,180 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 16 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:41:41,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3440 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:41:41,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2023-11-23 07:41:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1110. [2023-11-23 07:41:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 695 states have (on average 1.2388489208633093) internal successors, (861), 699 states have internal predecessors, (861), 346 states have call successors, (346), 52 states have call predecessors, (346), 67 states have return successors, (570), 360 states have call predecessors, (570), 343 states have call successors, (570) [2023-11-23 07:41:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1777 transitions. [2023-11-23 07:41:41,275 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1777 transitions. Word has length 302 [2023-11-23 07:41:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:41:41,276 INFO L495 AbstractCegarLoop]: Abstraction has 1110 states and 1777 transitions. [2023-11-23 07:41:41,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-23 07:41:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1777 transitions. [2023-11-23 07:41:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-11-23 07:41:41,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:41:41,279 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:41:41,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-23 07:41:41,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-23 07:41:41,493 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:41:41,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:41:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1997601, now seen corresponding path program 2 times [2023-11-23 07:41:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:41:41,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768307911] [2023-11-23 07:41:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:41:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:41:41,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:41:41,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116901118] [2023-11-23 07:41:41,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:41:41,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:41:41,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:41:41,610 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:41:41,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-23 07:41:45,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:41:45,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:41:45,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 4609 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 07:41:45,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:41:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 272 proven. 16 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-23 07:41:45,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:41:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2023-11-23 07:41:46,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:41:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768307911] [2023-11-23 07:41:46,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:41:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116901118] [2023-11-23 07:41:46,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116901118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:41:46,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:41:46,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-11-23 07:41:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669306355] [2023-11-23 07:41:46,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:41:46,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 07:41:46,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:41:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 07:41:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:41:46,341 INFO L87 Difference]: Start difference. First operand 1110 states and 1777 transitions. Second operand has 19 states, 18 states have (on average 8.833333333333334) internal successors, (159), 19 states have internal predecessors, (159), 5 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (54), 5 states have call predecessors, (54), 5 states have call successors, (54) [2023-11-23 07:41:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:41:47,489 INFO L93 Difference]: Finished difference Result 2263 states and 3851 transitions. [2023-11-23 07:41:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 07:41:47,489 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.833333333333334) internal successors, (159), 19 states have internal predecessors, (159), 5 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (54), 5 states have call predecessors, (54), 5 states have call successors, (54) Word has length 308 [2023-11-23 07:41:47,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:41:47,499 INFO L225 Difference]: With dead ends: 2263 [2023-11-23 07:41:47,499 INFO L226 Difference]: Without dead ends: 1172 [2023-11-23 07:41:47,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2023-11-23 07:41:47,506 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 115 mSDsluCounter, 5486 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6045 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:41:47,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6045 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:41:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2023-11-23 07:41:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1134. [2023-11-23 07:41:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 719 states have (on average 1.2475660639777468) internal successors, (897), 723 states have internal predecessors, (897), 346 states have call successors, (346), 52 states have call predecessors, (346), 67 states have return successors, (570), 360 states have call predecessors, (570), 343 states have call successors, (570) [2023-11-23 07:41:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1813 transitions. [2023-11-23 07:41:47,606 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1813 transitions. Word has length 308 [2023-11-23 07:41:47,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:41:47,607 INFO L495 AbstractCegarLoop]: Abstraction has 1134 states and 1813 transitions. [2023-11-23 07:41:47,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.833333333333334) internal successors, (159), 19 states have internal predecessors, (159), 5 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (54), 5 states have call predecessors, (54), 5 states have call successors, (54) [2023-11-23 07:41:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1813 transitions. [2023-11-23 07:41:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-23 07:41:47,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:41:47,611 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:41:47,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-23 07:41:47,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-23 07:41:47,824 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:41:47,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:41:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 464442013, now seen corresponding path program 3 times [2023-11-23 07:41:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:41:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076495970] [2023-11-23 07:41:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:41:47,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:41:47,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:41:47,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519060963] [2023-11-23 07:41:47,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:41:47,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:41:47,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:41:47,915 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:41:47,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-23 07:41:52,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 07:41:52,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:41:52,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 143 conjunts are in the unsatisfiable core [2023-11-23 07:41:52,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:41:52,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-23 07:41:52,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 07:41:52,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2023-11-23 07:41:55,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 07:41:55,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2023-11-23 07:42:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 170 proven. 6 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2023-11-23 07:42:03,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:42:10,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-11-23 07:42:11,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:42:11,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076495970] [2023-11-23 07:42:11,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:42:11,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519060963] [2023-11-23 07:42:11,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519060963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:42:11,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:42:11,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-11-23 07:42:11,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557933343] [2023-11-23 07:42:11,120 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:42:11,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 07:42:11,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:42:11,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 07:42:11,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1358, Unknown=1, NotChecked=0, Total=1482 [2023-11-23 07:42:11,122 INFO L87 Difference]: Start difference. First operand 1134 states and 1813 transitions. Second operand has 27 states, 22 states have (on average 4.863636363636363) internal successors, (107), 20 states have internal predecessors, (107), 7 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 07:42:13,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:21,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:42:24,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:42:26,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:28,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:37,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:42:39,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:42:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:42:44,128 INFO L93 Difference]: Finished difference Result 2358 states and 4273 transitions. [2023-11-23 07:42:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-23 07:42:44,128 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 4.863636363636363) internal successors, (107), 20 states have internal predecessors, (107), 7 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) Word has length 320 [2023-11-23 07:42:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:42:44,145 INFO L225 Difference]: With dead ends: 2358 [2023-11-23 07:42:44,145 INFO L226 Difference]: Without dead ends: 2356 [2023-11-23 07:42:44,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=373, Invalid=3658, Unknown=1, NotChecked=0, Total=4032 [2023-11-23 07:42:44,149 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 863 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 7174 mSolverCounterSat, 855 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 4289 SdHoareTripleChecker+Invalid, 8048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 7174 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:42:44,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 4289 Invalid, 8048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [855 Valid, 7174 Invalid, 19 Unknown, 0 Unchecked, 27.2s Time] [2023-11-23 07:42:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2023-11-23 07:42:44,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2285. [2023-11-23 07:42:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2285 states, 1453 states have (on average 1.2463867859600826) internal successors, (1811), 1463 states have internal predecessors, (1811), 690 states have call successors, (690), 101 states have call predecessors, (690), 140 states have return successors, (1511), 724 states have call predecessors, (1511), 685 states have call successors, (1511) [2023-11-23 07:42:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 4012 transitions. [2023-11-23 07:42:44,389 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 4012 transitions. Word has length 320 [2023-11-23 07:42:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:42:44,389 INFO L495 AbstractCegarLoop]: Abstraction has 2285 states and 4012 transitions. [2023-11-23 07:42:44,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 4.863636363636363) internal successors, (107), 20 states have internal predecessors, (107), 7 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (32), 7 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 07:42:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 4012 transitions. [2023-11-23 07:42:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-11-23 07:42:44,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:42:44,396 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:42:44,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-23 07:42:44,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-23 07:42:44,613 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:42:44,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:42:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2146339395, now seen corresponding path program 1 times [2023-11-23 07:42:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:42:44,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026005490] [2023-11-23 07:42:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:42:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:42:44,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:42:44,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205790195] [2023-11-23 07:42:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:42:44,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:42:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:42:44,702 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:42:44,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-23 07:42:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:42:46,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 4659 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 07:42:46,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:42:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-11-23 07:42:46,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:42:46,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:42:46,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026005490] [2023-11-23 07:42:46,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:42:46,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205790195] [2023-11-23 07:42:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205790195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:42:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:42:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:42:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723959789] [2023-11-23 07:42:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:42:46,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:42:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:42:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:42:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:42:46,206 INFO L87 Difference]: Start difference. First operand 2285 states and 4012 transitions. Second operand has 11 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-23 07:42:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:42:46,587 INFO L93 Difference]: Finished difference Result 4675 states and 8727 transitions. [2023-11-23 07:42:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:42:46,587 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) Word has length 332 [2023-11-23 07:42:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:42:46,610 INFO L225 Difference]: With dead ends: 4675 [2023-11-23 07:42:46,610 INFO L226 Difference]: Without dead ends: 2421 [2023-11-23 07:42:46,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:42:46,634 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 17 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6005 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:42:46,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6005 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:42:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-11-23 07:42:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2317. [2023-11-23 07:42:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1481 states have (on average 1.2322754895340986) internal successors, (1825), 1484 states have internal predecessors, (1825), 690 states have call successors, (690), 101 states have call predecessors, (690), 144 states have return successors, (1592), 735 states have call predecessors, (1592), 685 states have call successors, (1592) [2023-11-23 07:42:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 4107 transitions. [2023-11-23 07:42:46,892 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 4107 transitions. Word has length 332 [2023-11-23 07:42:46,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:42:46,892 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 4107 transitions. [2023-11-23 07:42:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-23 07:42:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 4107 transitions. [2023-11-23 07:42:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-23 07:42:46,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:42:46,899 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:42:46,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-23 07:42:47,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:42:47,117 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:42:47,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:42:47,117 INFO L85 PathProgramCache]: Analyzing trace with hash 652233964, now seen corresponding path program 1 times [2023-11-23 07:42:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:42:47,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921364191] [2023-11-23 07:42:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:42:47,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:42:47,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:42:47,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180100525] [2023-11-23 07:42:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:42:47,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:42:47,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:42:47,226 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:42:47,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-23 07:42:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:42:48,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 4648 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 07:42:48,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:42:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-11-23 07:42:48,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:42:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:42:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921364191] [2023-11-23 07:42:48,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:42:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180100525] [2023-11-23 07:42:48,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180100525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:42:48,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:42:48,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 07:42:48,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043613044] [2023-11-23 07:42:48,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:42:48,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 07:42:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:42:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 07:42:48,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:42:48,926 INFO L87 Difference]: Start difference. First operand 2317 states and 4107 transitions. Second operand has 13 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 4 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) [2023-11-23 07:42:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:42:49,638 INFO L93 Difference]: Finished difference Result 4419 states and 8057 transitions. [2023-11-23 07:42:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:42:49,639 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 4 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) Word has length 334 [2023-11-23 07:42:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:42:49,664 INFO L225 Difference]: With dead ends: 4419 [2023-11-23 07:42:49,664 INFO L226 Difference]: Without dead ends: 2333 [2023-11-23 07:42:49,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:42:49,683 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 11 mSDsluCounter, 6132 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6699 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:42:49,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6699 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:42:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2023-11-23 07:42:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2317. [2023-11-23 07:42:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1481 states have (on average 1.2322754895340986) internal successors, (1825), 1484 states have internal predecessors, (1825), 690 states have call successors, (690), 101 states have call predecessors, (690), 144 states have return successors, (1572), 735 states have call predecessors, (1572), 685 states have call successors, (1572) [2023-11-23 07:42:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 4087 transitions. [2023-11-23 07:42:49,918 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 4087 transitions. Word has length 334 [2023-11-23 07:42:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:42:49,918 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 4087 transitions. [2023-11-23 07:42:49,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 4 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) [2023-11-23 07:42:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 4087 transitions. [2023-11-23 07:42:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2023-11-23 07:42:49,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:42:49,924 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:42:50,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-23 07:42:50,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-23 07:42:50,137 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:42:50,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:42:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash 304291201, now seen corresponding path program 2 times [2023-11-23 07:42:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:42:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243607699] [2023-11-23 07:42:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:42:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:42:50,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:42:50,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30068923] [2023-11-23 07:42:50,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:42:50,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:42:50,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:42:50,245 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:42:50,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-23 07:42:52,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:42:52,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:42:52,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 4649 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 07:42:52,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:42:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 278 proven. 100 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-23 07:42:52,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:42:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2023-11-23 07:42:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:42:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243607699] [2023-11-23 07:42:53,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:42:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30068923] [2023-11-23 07:42:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30068923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:42:53,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:42:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-23 07:42:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712720175] [2023-11-23 07:42:53,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:42:53,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 07:42:53,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:42:53,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 07:42:53,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:42:53,111 INFO L87 Difference]: Start difference. First operand 2317 states and 4087 transitions. Second operand has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-11-23 07:42:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:42:55,582 INFO L93 Difference]: Finished difference Result 4895 states and 9373 transitions. [2023-11-23 07:42:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 07:42:55,583 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 330 [2023-11-23 07:42:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:42:55,605 INFO L225 Difference]: With dead ends: 4895 [2023-11-23 07:42:55,606 INFO L226 Difference]: Without dead ends: 2585 [2023-11-23 07:42:55,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 07:42:55,625 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 255 mSDsluCounter, 6536 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 7132 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:42:55,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 7132 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:42:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2023-11-23 07:42:55,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2413. [2023-11-23 07:42:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 1577 states have (on average 1.24857324032974) internal successors, (1969), 1580 states have internal predecessors, (1969), 690 states have call successors, (690), 101 states have call predecessors, (690), 144 states have return successors, (1572), 735 states have call predecessors, (1572), 685 states have call successors, (1572) [2023-11-23 07:42:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4231 transitions. [2023-11-23 07:42:55,878 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4231 transitions. Word has length 330 [2023-11-23 07:42:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:42:55,878 INFO L495 AbstractCegarLoop]: Abstraction has 2413 states and 4231 transitions. [2023-11-23 07:42:55,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-11-23 07:42:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4231 transitions. [2023-11-23 07:42:55,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-11-23 07:42:55,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:42:55,884 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:42:55,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-23 07:42:56,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:42:56,100 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION, my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:42:56,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:42:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1903723863, now seen corresponding path program 1 times [2023-11-23 07:42:56,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:42:56,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946914795] [2023-11-23 07:42:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:42:56,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:42:56,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:42:56,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399598850] [2023-11-23 07:42:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:42:56,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:42:56,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:42:56,181 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:42:56,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-23 07:42:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:42:59,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 4570 conjuncts, 139 conjunts are in the unsatisfiable core [2023-11-23 07:42:59,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:42:59,832 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 07:42:59,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:42:59,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-23 07:43:01,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-11-23 07:43:01,621 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 07:43:01,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 16 [2023-11-23 07:43:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 369 proven. 94 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-23 07:43:01,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:43:02,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:43:02,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946914795] [2023-11-23 07:43:02,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:43:02,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399598850] [2023-11-23 07:43:02,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399598850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:43:02,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:43:02,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-11-23 07:43:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069959429] [2023-11-23 07:43:02,756 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:43:02,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 07:43:02,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:43:02,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 07:43:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 07:43:02,759 INFO L87 Difference]: Start difference. First operand 2413 states and 4231 transitions. Second operand has 26 states, 23 states have (on average 6.173913043478261) internal successors, (142), 23 states have internal predecessors, (142), 14 states have call successors, (37), 5 states have call predecessors, (37), 9 states have return successors, (36), 12 states have call predecessors, (36), 14 states have call successors, (36) Killed by 15