./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 false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_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 false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 09:01:52,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 09:01:52,812 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 09:01:52,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 09:01:52,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 09:01:52,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 09:01:52,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 09:01:52,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 09:01:52,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 09:01:52,843 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 09:01:52,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 09:01:52,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 09:01:52,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 09:01:52,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 09:01:52,845 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 09:01:52,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 09:01:52,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 09:01:52,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 09:01:52,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 09:01:52,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 09:01:52,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 09:01:52,847 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 09:01:52,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 09:01:52,847 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 09:01:52,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 09:01:52,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 09:01:52,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 09:01:52,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 09:01:52,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:01:52,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 09:01:52,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 09:01:52,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 09:01:52,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 09:01:52,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 09:01:52,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 09:01:52,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 09:01:52,851 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 09:01:52,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 09:01:52,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 09:01:52,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 09:01:53,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 09:01:53,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 09:01:53,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 09:01:53,066 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 09:01:53,067 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 09:01:53,067 INFO L431 ainManager$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 09:01:54,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 09:01:54,565 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 09:01:54,565 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_remove_harness.i [2023-11-23 09:01:54,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf0c6e17/b18f96a18d2048519a4961515b088567/FLAG6aa60af2b [2023-11-23 09:01:54,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf0c6e17/b18f96a18d2048519a4961515b088567 [2023-11-23 09:01:54,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 09:01:54,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 09:01:54,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 09:01:54,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 09:01:54,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 09:01:54,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:01:54" (1/1) ... [2023-11-23 09:01:54,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8b3373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:54, skipping insertion in model container [2023-11-23 09:01:54,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:01:54" (1/1) ... [2023-11-23 09:01:54,715 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 09:01:54,943 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 09:01:54,953 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 09:01:55,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,767 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,767 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,781 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,782 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,782 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:55,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:01:56,068 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:01:56,069 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:01:56,071 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:01:56,072 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:01:56,072 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:01:56,073 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:01:56,073 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:01:56,074 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:01:56,074 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:01:56,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,219 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,284 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,286 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,286 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,288 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,337 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,337 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,343 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,344 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,344 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,373 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,373 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:01:56,406 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 09:01:56,416 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 09:01:56,417 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 09:01:56,441 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,441 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,451 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,461 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,461 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,462 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,463 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,464 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,464 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,504 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:01:56,505 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:01:56,505 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:01:56,506 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:01:56,506 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:01:56,507 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:01:56,507 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:01:56,507 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:01:56,508 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:01:56,511 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:01:56,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,551 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,555 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-23 09:01:56,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,584 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,585 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,585 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,585 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,589 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,589 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,610 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:01:56,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:01:56,750 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,750 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,750 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,750 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,751 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,751 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,751 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,751 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,751 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,751 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,752 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,752 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,752 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,753 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,753 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:01:56,759 INFO L206 MainTranslator]: Completed translation [2023-11-23 09:01:56,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56 WrapperNode [2023-11-23 09:01:56,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 09:01:56,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 09:01:56,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 09:01:56,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 09:01:56,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,889 INFO L138 Inliner]: procedures = 696, calls = 1922, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1063 [2023-11-23 09:01:56,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 09:01:56,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 09:01:56,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 09:01:56,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 09:01:56,898 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 09:01:56,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 09:01:56,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 09:01:56,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 09:01:56,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (1/1) ... [2023-11-23 09:01:56,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:01:56,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:01:56,983 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 09:01:57,011 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 09:01:57,041 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-23 09:01:57,042 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-23 09:01:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 09:01:57,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 09:01:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 09:01:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 09:01:57,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 09:01:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 09:01:57,043 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 09:01:57,043 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 09:01:57,043 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 09:01:57,043 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-23 09:01:57,043 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-23 09:01:57,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 09:01:57,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 09:01:57,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 09:01:57,043 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 09:01:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 09:01:57,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 09:01:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-23 09:01:57,044 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-23 09:01:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 09:01:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 09:01:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 09:01:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-23 09:01:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-23 09:01:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 09:01:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 09:01:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 09:01:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 09:01:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 09:01:57,045 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 09:01:57,045 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 09:01:57,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 09:01:57,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 09:01:57,046 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 09:01:57,046 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 09:01:57,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 09:01:57,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 09:01:57,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 09:01:57,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 09:01:57,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 09:01:57,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 09:01:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 09:01:57,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 09:01:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 09:01:57,047 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 09:01:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-23 09:01:57,047 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-23 09:01:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 09:01:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 09:01:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 09:01:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-23 09:01:57,048 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-23 09:01:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 09:01:57,048 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 09:01:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 09:01:57,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 09:01:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 09:01:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 09:01:57,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 09:01:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 09:01:57,049 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 09:01:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 09:01:57,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 09:01:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 09:01:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-23 09:01:57,049 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-23 09:01:57,339 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 09:01:57,341 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 09:01:58,809 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 09:01:58,883 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 09:01:58,883 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-23 09:01:58,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:01:58 BoogieIcfgContainer [2023-11-23 09:01:58,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 09:01:58,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 09:01:58,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 09:01:58,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 09:01:58,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:01:54" (1/3) ... [2023-11-23 09:01:58,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a01fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:01:58, skipping insertion in model container [2023-11-23 09:01:58,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:01:56" (2/3) ... [2023-11-23 09:01:58,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a01fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:01:58, skipping insertion in model container [2023-11-23 09:01:58,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:01:58" (3/3) ... [2023-11-23 09:01:58,895 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2023-11-23 09:01:58,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 09:01:58,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 09:01:58,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 09:01:58,970 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;@76151533, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 09:01:58,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 09:01:58,976 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 09:01:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 09:01:58,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:01:58,997 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 09:01:58,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:01:59,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:01:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1018159231, now seen corresponding path program 1 times [2023-11-23 09:01:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:01:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641686914] [2023-11-23 09:01:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:01:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:01:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:01:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:01:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:01:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:01:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:01:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:01:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:01:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:01:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:01:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:01:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:01:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 09:01:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:01:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 09:01:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:01:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:01:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 09:01:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 09:01:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 09:01:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 09:01:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 09:01:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 09:01:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:01:59,858 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 09:01:59,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:01:59,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641686914] [2023-11-23 09:01:59,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641686914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:01:59,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:01:59,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:01:59,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778898671] [2023-11-23 09:01:59,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:01:59,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:01:59,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:01:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:01:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:01:59,894 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 09:02:01,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 09:02:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:03,090 INFO L93 Difference]: Finished difference Result 1259 states and 2406 transitions. [2023-11-23 09:02:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:02:03,094 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 09:02:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:03,117 INFO L225 Difference]: With dead ends: 1259 [2023-11-23 09:02:03,118 INFO L226 Difference]: Without dead ends: 842 [2023-11-23 09:02:03,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:02:03,130 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 596 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:03,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1255 Invalid, 1830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [923 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 09:02:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-11-23 09:02:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 420. [2023-11-23 09:02:03,238 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 09:02:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 608 transitions. [2023-11-23 09:02:03,246 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 608 transitions. Word has length 128 [2023-11-23 09:02:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:03,248 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 608 transitions. [2023-11-23 09:02:03,248 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 09:02:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 608 transitions. [2023-11-23 09:02:03,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 09:02:03,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:03,256 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 09:02:03,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 09:02:03,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:03,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1940821249, now seen corresponding path program 1 times [2023-11-23 09:02:03,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:03,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128358144] [2023-11-23 09:02:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:03,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:02:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:02:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:02:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:02:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:02:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:02:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:02:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:02:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:02:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:02:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:02:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 09:02:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:02:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 09:02:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:02:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:02:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 09:02:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 09:02:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 09:02:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 09:02:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 09:02:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 09:02:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 09:02:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 09:02:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 09:02:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:03,947 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 09:02:03,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:03,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128358144] [2023-11-23 09:02:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128358144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:02:03,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254887423] [2023-11-23 09:02:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:03,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:03,949 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 09:02:03,962 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 09:02:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:04,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 09:02:04,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:04,513 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 09:02:04,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:04,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254887423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:04,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:02:04,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 09:02:04,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456801125] [2023-11-23 09:02:04,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:04,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:02:04,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:02:04,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:02:04,516 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 09:02:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:05,522 INFO L93 Difference]: Finished difference Result 811 states and 1190 transitions. [2023-11-23 09:02:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:02:05,522 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 09:02:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:05,525 INFO L225 Difference]: With dead ends: 811 [2023-11-23 09:02:05,525 INFO L226 Difference]: Without dead ends: 422 [2023-11-23 09:02:05,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:02:05,528 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 66 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:05,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 2104 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 09:02:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-23 09:02:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2023-11-23 09:02:05,543 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 09:02:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 622 transitions. [2023-11-23 09:02:05,546 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 622 transitions. Word has length 145 [2023-11-23 09:02:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:05,547 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 622 transitions. [2023-11-23 09:02:05,547 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 09:02:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 622 transitions. [2023-11-23 09:02:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 09:02:05,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:05,549 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 09:02:05,568 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 09:02:05,765 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 09:02:05,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:05,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1467332003, now seen corresponding path program 1 times [2023-11-23 09:02:05,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:05,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410863424] [2023-11-23 09:02:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:02:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:02:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:02:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 09:02:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:02:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:02:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:02:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 09:02:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 09:02:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:02:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 09:02:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:02:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:02:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:02:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 09:02:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:02:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:02:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 09:02:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 09:02:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 09:02:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 09:02:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 09:02:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 09:02:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 09:02:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 09:02:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 09:02:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,456 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 09:02:06,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:06,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410863424] [2023-11-23 09:02:06,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410863424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:02:06,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374771916] [2023-11-23 09:02:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:06,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:06,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:06,475 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 09:02:06,524 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 09:02:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:06,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 09:02:06,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:07,058 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 09:02:07,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:07,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374771916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:07,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:02:07,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 09:02:07,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824195316] [2023-11-23 09:02:07,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:07,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 09:02:07,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:07,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 09:02:07,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-23 09:02:07,059 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 09:02:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:08,221 INFO L93 Difference]: Finished difference Result 834 states and 1261 transitions. [2023-11-23 09:02:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:02:08,221 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 09:02:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:08,225 INFO L225 Difference]: With dead ends: 834 [2023-11-23 09:02:08,225 INFO L226 Difference]: Without dead ends: 443 [2023-11-23 09:02:08,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-11-23 09:02:08,229 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 117 mSDsluCounter, 2511 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:08,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 3044 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 09:02:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-23 09:02:08,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2023-11-23 09:02:08,245 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 09:02:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 665 transitions. [2023-11-23 09:02:08,248 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 665 transitions. Word has length 153 [2023-11-23 09:02:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:08,249 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 665 transitions. [2023-11-23 09:02:08,250 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 09:02:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 665 transitions. [2023-11-23 09:02:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 09:02:08,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:08,251 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 09:02:08,269 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 09:02:08,466 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 09:02:08,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:08,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -314478125, now seen corresponding path program 1 times [2023-11-23 09:02:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:08,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39227489] [2023-11-23 09:02:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:08,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:08,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:08,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307613391] [2023-11-23 09:02:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:08,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:08,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:08,541 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 09:02:08,542 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 09:02:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:09,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 09:02:09,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:09,090 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 09:02:09,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39227489] [2023-11-23 09:02:09,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:09,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307613391] [2023-11-23 09:02:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307613391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:09,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:02:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316517245] [2023-11-23 09:02:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:09,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:02:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:09,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:02:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:02:09,093 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 09:02:10,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:10,360 INFO L93 Difference]: Finished difference Result 857 states and 1320 transitions. [2023-11-23 09:02:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:02:10,361 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 09:02:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:10,365 INFO L225 Difference]: With dead ends: 857 [2023-11-23 09:02:10,365 INFO L226 Difference]: Without dead ends: 447 [2023-11-23 09:02:10,368 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 09:02:10,371 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 85 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:10,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 2598 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 09:02:10,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-23 09:02:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2023-11-23 09:02:10,423 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 09:02:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 665 transitions. [2023-11-23 09:02:10,426 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 665 transitions. Word has length 166 [2023-11-23 09:02:10,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:10,428 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 665 transitions. [2023-11-23 09:02:10,428 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 09:02:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 665 transitions. [2023-11-23 09:02:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-23 09:02:10,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:10,431 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 09:02:10,449 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 09:02:10,647 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 09:02:10,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:10,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash -864460856, now seen corresponding path program 1 times [2023-11-23 09:02:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388495377] [2023-11-23 09:02:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:10,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:10,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123752324] [2023-11-23 09:02:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:10,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:10,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:10,745 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 09:02:10,769 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 09:02:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:11,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 09:02:11,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:11,356 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 09:02:11,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:11,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:11,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388495377] [2023-11-23 09:02:11,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:11,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123752324] [2023-11-23 09:02:11,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123752324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:11,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:11,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:02:11,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644318587] [2023-11-23 09:02:11,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:11,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:02:11,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:11,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:02:11,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:02:11,358 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 09:02:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:12,997 INFO L93 Difference]: Finished difference Result 867 states and 1324 transitions. [2023-11-23 09:02:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 09:02:12,997 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 09:02:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:13,000 INFO L225 Difference]: With dead ends: 867 [2023-11-23 09:02:13,000 INFO L226 Difference]: Without dead ends: 457 [2023-11-23 09:02:13,002 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 09:02:13,002 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 145 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:13,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 3495 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 09:02:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-23 09:02:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 441. [2023-11-23 09:02:13,016 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 09:02:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 665 transitions. [2023-11-23 09:02:13,019 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 665 transitions. Word has length 182 [2023-11-23 09:02:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:13,019 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 665 transitions. [2023-11-23 09:02:13,020 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 09:02:13,020 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 665 transitions. [2023-11-23 09:02:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 09:02:13,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:13,022 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 09:02:13,041 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 09:02:13,239 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 09:02:13,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:13,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2107126620, now seen corresponding path program 2 times [2023-11-23 09:02:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:13,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759988865] [2023-11-23 09:02:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:13,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:13,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739721252] [2023-11-23 09:02:13,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 09:02:13,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:13,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:13,330 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 09:02:13,354 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 09:02:13,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 09:02:13,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:02:13,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 2870 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 09:02:13,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:13,955 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 09:02:13,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759988865] [2023-11-23 09:02:13,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739721252] [2023-11-23 09:02:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739721252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:13,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:13,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:02:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308906291] [2023-11-23 09:02:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:13,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:02:13,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:02:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:02:13,958 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 09:02:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:14,916 INFO L93 Difference]: Finished difference Result 819 states and 1254 transitions. [2023-11-23 09:02:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:02:14,917 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 09:02:14,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:14,921 INFO L225 Difference]: With dead ends: 819 [2023-11-23 09:02:14,921 INFO L226 Difference]: Without dead ends: 443 [2023-11-23 09:02:14,923 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 09:02:14,924 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, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:14,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2626 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 09:02:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-23 09:02:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-11-23 09:02:14,940 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 09:02:14,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 677 transitions. [2023-11-23 09:02:14,944 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 677 transitions. Word has length 195 [2023-11-23 09:02:14,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:14,945 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 677 transitions. [2023-11-23 09:02:14,946 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 09:02:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 677 transitions. [2023-11-23 09:02:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-23 09:02:14,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:14,947 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 09:02:14,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 09:02:15,165 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 09:02:15,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:15,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash -773674240, now seen corresponding path program 1 times [2023-11-23 09:02:15,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:15,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255701107] [2023-11-23 09:02:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:15,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:15,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001769403] [2023-11-23 09:02:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:15,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:15,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:15,274 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 09:02:15,292 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 09:02:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:15,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 09:02:15,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:16,004 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 09:02:16,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:16,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255701107] [2023-11-23 09:02:16,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001769403] [2023-11-23 09:02:16,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001769403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:16,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:16,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:02:16,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835440183] [2023-11-23 09:02:16,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:16,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:02:16,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:16,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:02:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:02:16,007 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 09:02:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:18,082 INFO L93 Difference]: Finished difference Result 837 states and 1298 transitions. [2023-11-23 09:02:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:02:18,085 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 09:02:18,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:18,090 INFO L225 Difference]: With dead ends: 837 [2023-11-23 09:02:18,090 INFO L226 Difference]: Without dead ends: 459 [2023-11-23 09:02:18,094 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 09:02:18,094 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 112 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:18,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 3618 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 09:02:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-23 09:02:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2023-11-23 09:02:18,121 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 09:02:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 697 transitions. [2023-11-23 09:02:18,125 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 697 transitions. Word has length 203 [2023-11-23 09:02:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:18,125 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 697 transitions. [2023-11-23 09:02:18,125 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 09:02:18,125 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 697 transitions. [2023-11-23 09:02:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-23 09:02:18,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:18,128 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 09:02:18,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 09:02:18,345 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 09:02:18,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:18,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1222481068, now seen corresponding path program 2 times [2023-11-23 09:02:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:18,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189502633] [2023-11-23 09:02:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:18,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:18,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:18,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375419315] [2023-11-23 09:02:18,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 09:02:18,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:18,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:18,425 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 09:02:18,446 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 09:02:19,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 09:02:19,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:02:19,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 09:02:19,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:19,193 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 09:02:19,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:19,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189502633] [2023-11-23 09:02:19,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375419315] [2023-11-23 09:02:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375419315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:19,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 09:02:19,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741303447] [2023-11-23 09:02:19,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:19,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 09:02:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 09:02:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:02:19,196 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 09:02:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:20,358 INFO L93 Difference]: Finished difference Result 855 states and 1332 transitions. [2023-11-23 09:02:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:02:20,359 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 09:02:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:20,362 INFO L225 Difference]: With dead ends: 855 [2023-11-23 09:02:20,362 INFO L226 Difference]: Without dead ends: 463 [2023-11-23 09:02:20,364 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 09:02:20,364 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 95 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:20,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 3111 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 09:02:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-23 09:02:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 457. [2023-11-23 09:02:20,401 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 09:02:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 697 transitions. [2023-11-23 09:02:20,417 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 697 transitions. Word has length 216 [2023-11-23 09:02:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:20,419 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 697 transitions. [2023-11-23 09:02:20,419 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 09:02:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 697 transitions. [2023-11-23 09:02:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-23 09:02:20,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:20,422 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 09:02:20,441 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 09:02:20,639 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 09:02:20,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:20,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:20,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1536399049, now seen corresponding path program 1 times [2023-11-23 09:02:20,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:20,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475163408] [2023-11-23 09:02:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:20,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:20,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:20,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726049865] [2023-11-23 09:02:20,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:20,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:20,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:20,745 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 09:02:20,771 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 09:02:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:21,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 09:02:21,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:21,614 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 09:02:21,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:21,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:21,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475163408] [2023-11-23 09:02:21,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726049865] [2023-11-23 09:02:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726049865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:21,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:21,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 09:02:21,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696324105] [2023-11-23 09:02:21,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:21,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 09:02:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:21,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 09:02:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:02:21,617 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 09:02:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:23,647 INFO L93 Difference]: Finished difference Result 849 states and 1304 transitions. [2023-11-23 09:02:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 09:02:23,647 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 09:02:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:23,652 INFO L225 Difference]: With dead ends: 849 [2023-11-23 09:02:23,655 INFO L226 Difference]: Without dead ends: 457 [2023-11-23 09:02:23,657 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 09:02:23,661 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 155 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:23,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 3981 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 09:02:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-23 09:02:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 441. [2023-11-23 09:02:23,679 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 09:02:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 663 transitions. [2023-11-23 09:02:23,681 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 663 transitions. Word has length 232 [2023-11-23 09:02:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:23,685 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 663 transitions. [2023-11-23 09:02:23,685 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 09:02:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 663 transitions. [2023-11-23 09:02:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-23 09:02:23,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:23,686 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 09:02:23,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 09:02:23,908 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 09:02:23,908 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:23,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1426248327, now seen corresponding path program 2 times [2023-11-23 09:02:23,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:23,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885488904] [2023-11-23 09:02:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:23,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:23,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:23,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724334961] [2023-11-23 09:02:23,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 09:02:23,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:23,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:23,992 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 09:02:24,015 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 09:02:24,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 09:02:24,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:02:24,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 09:02:24,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:24,811 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 09:02:24,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885488904] [2023-11-23 09:02:24,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:24,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724334961] [2023-11-23 09:02:24,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724334961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:24,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:24,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:02:24,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032504713] [2023-11-23 09:02:24,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:24,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:02:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:24,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:02:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:02:24,814 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 09:02:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:26,026 INFO L93 Difference]: Finished difference Result 820 states and 1243 transitions. [2023-11-23 09:02:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:02:26,027 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 09:02:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:26,041 INFO L225 Difference]: With dead ends: 820 [2023-11-23 09:02:26,042 INFO L226 Difference]: Without dead ends: 452 [2023-11-23 09:02:26,053 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 09:02:26,053 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 69 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:26,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 3675 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 09:02:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-11-23 09:02:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2023-11-23 09:02:26,071 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 09:02:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 679 transitions. [2023-11-23 09:02:26,074 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 679 transitions. Word has length 245 [2023-11-23 09:02:26,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:26,074 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 679 transitions. [2023-11-23 09:02:26,075 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 09:02:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 679 transitions. [2023-11-23 09:02:26,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-23 09:02:26,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:26,076 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 09:02:26,093 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 09:02:26,282 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 09:02:26,283 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:26,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:26,283 INFO L85 PathProgramCache]: Analyzing trace with hash 345519447, now seen corresponding path program 1 times [2023-11-23 09:02:26,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:26,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959994316] [2023-11-23 09:02:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:26,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:26,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:26,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414643573] [2023-11-23 09:02:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:26,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:26,389 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 09:02:26,427 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 09:02:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:27,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 3548 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 09:02:27,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:27,308 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 09:02:27,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:27,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:27,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959994316] [2023-11-23 09:02:27,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:27,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414643573] [2023-11-23 09:02:27,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414643573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:27,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:27,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 09:02:27,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779541551] [2023-11-23 09:02:27,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:27,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 09:02:27,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:27,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 09:02:27,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:02:27,310 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 09:02:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:27,685 INFO L93 Difference]: Finished difference Result 875 states and 1321 transitions. [2023-11-23 09:02:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:02:27,686 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 09:02:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:27,689 INFO L225 Difference]: With dead ends: 875 [2023-11-23 09:02:27,689 INFO L226 Difference]: Without dead ends: 454 [2023-11-23 09:02:27,690 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 09:02:27,691 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:27,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4316 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:02:27,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-23 09:02:27,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2023-11-23 09:02:27,709 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 09:02:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 683 transitions. [2023-11-23 09:02:27,712 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 683 transitions. Word has length 271 [2023-11-23 09:02:27,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:27,712 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 683 transitions. [2023-11-23 09:02:27,712 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 09:02:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 683 transitions. [2023-11-23 09:02:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 09:02:27,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:27,714 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 09:02:27,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-23 09:02:27,920 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 09:02:27,920 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:27,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash 973940566, now seen corresponding path program 1 times [2023-11-23 09:02:27,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:27,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564520888] [2023-11-23 09:02:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:28,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:28,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053079067] [2023-11-23 09:02:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:28,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:28,079 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 09:02:28,103 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 09:02:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:28,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 3582 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 09:02:28,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-23 09:02:29,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:02:29,201 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 09:02:29,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:29,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564520888] [2023-11-23 09:02:29,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:29,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053079067] [2023-11-23 09:02:29,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053079067] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:02:29,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:02:29,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-23 09:02:29,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329166402] [2023-11-23 09:02:29,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:02:29,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:02:29,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:29,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:02:29,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:02:29,203 INFO L87 Difference]: Start difference. First operand 454 states and 683 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2023-11-23 09:02:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:30,824 INFO L93 Difference]: Finished difference Result 890 states and 1350 transitions. [2023-11-23 09:02:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 09:02:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) Word has length 281 [2023-11-23 09:02:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:30,827 INFO L225 Difference]: With dead ends: 890 [2023-11-23 09:02:30,827 INFO L226 Difference]: Without dead ends: 506 [2023-11-23 09:02:30,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:02:30,831 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 50 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:30,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4166 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 09:02:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-23 09:02:30,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 475. [2023-11-23 09:02:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 269 states have (on average 1.2565055762081785) internal successors, (338), 273 states have internal predecessors, (338), 174 states have call successors, (174), 28 states have call predecessors, (174), 30 states have return successors, (205), 174 states have call predecessors, (205), 172 states have call successors, (205) [2023-11-23 09:02:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 717 transitions. [2023-11-23 09:02:30,853 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 717 transitions. Word has length 281 [2023-11-23 09:02:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:30,854 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 717 transitions. [2023-11-23 09:02:30,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2023-11-23 09:02:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 717 transitions. [2023-11-23 09:02:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 09:02:30,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:30,856 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 09:02:30,890 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 09:02:31,091 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 09:02:31,092 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:31,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1927880724, now seen corresponding path program 1 times [2023-11-23 09:02:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:31,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905454927] [2023-11-23 09:02:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:31,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:31,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:31,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776242370] [2023-11-23 09:02:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:31,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:31,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:31,209 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 09:02:31,224 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 09:02:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:32,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 3579 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 09:02:32,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:32,132 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 09:02:32,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:02:32,314 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 09:02:32,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:32,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905454927] [2023-11-23 09:02:32,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:32,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776242370] [2023-11-23 09:02:32,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776242370] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:02:32,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:02:32,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-11-23 09:02:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7754296] [2023-11-23 09:02:32,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:02:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 09:02:32,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:32,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 09:02:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:02:32,316 INFO L87 Difference]: Start difference. First operand 475 states and 717 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 09:02:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:34,049 INFO L93 Difference]: Finished difference Result 898 states and 1361 transitions. [2023-11-23 09:02:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:02:34,049 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 09:02:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:34,052 INFO L225 Difference]: With dead ends: 898 [2023-11-23 09:02:34,052 INFO L226 Difference]: Without dead ends: 506 [2023-11-23 09:02:34,055 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 09:02:34,055 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 36 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:34,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3597 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 09:02:34,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-23 09:02:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 475. [2023-11-23 09:02:34,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 269 states have (on average 1.2527881040892193) internal successors, (337), 273 states have internal predecessors, (337), 174 states have call successors, (174), 28 states have call predecessors, (174), 30 states have return successors, (205), 174 states have call predecessors, (205), 172 states have call successors, (205) [2023-11-23 09:02:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 716 transitions. [2023-11-23 09:02:34,076 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 716 transitions. Word has length 281 [2023-11-23 09:02:34,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:34,076 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 716 transitions. [2023-11-23 09:02:34,076 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 09:02:34,076 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 716 transitions. [2023-11-23 09:02:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 09:02:34,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:34,078 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 09:02:34,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-23 09:02:34,290 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 09:02:34,291 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:34,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1387451218, now seen corresponding path program 1 times [2023-11-23 09:02:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101261543] [2023-11-23 09:02:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:34,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912843878] [2023-11-23 09:02:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:34,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:34,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:34,369 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 09:02:34,405 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 09:02:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:35,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 3576 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-23 09:02:35,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:35,457 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 09:02:35,460 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 09:02:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-11-23 09:02:35,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:35,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101261543] [2023-11-23 09:02:35,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912843878] [2023-11-23 09:02:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912843878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:35,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 09:02:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685898330] [2023-11-23 09:02:35,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:35,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 09:02:35,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:35,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 09:02:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-23 09:02:35,484 INFO L87 Difference]: Start difference. First operand 475 states and 716 transitions. Second operand has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 5 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-23 09:02:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:37,584 INFO L93 Difference]: Finished difference Result 955 states and 1490 transitions. [2023-11-23 09:02:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 09:02:37,585 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 5 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) Word has length 281 [2023-11-23 09:02:37,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:37,587 INFO L225 Difference]: With dead ends: 955 [2023-11-23 09:02:37,587 INFO L226 Difference]: Without dead ends: 511 [2023-11-23 09:02:37,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2023-11-23 09:02:37,590 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 78 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5600 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:37,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5600 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 09:02:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-11-23 09:02:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 500. [2023-11-23 09:02:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 293 states have (on average 1.2627986348122866) internal successors, (370), 296 states have internal predecessors, (370), 174 states have call successors, (174), 28 states have call predecessors, (174), 31 states have return successors, (224), 176 states have call predecessors, (224), 172 states have call successors, (224) [2023-11-23 09:02:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 768 transitions. [2023-11-23 09:02:37,609 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 768 transitions. Word has length 281 [2023-11-23 09:02:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:37,609 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 768 transitions. [2023-11-23 09:02:37,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 5 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-23 09:02:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 768 transitions. [2023-11-23 09:02:37,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 09:02:37,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:37,611 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 09:02:37,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-23 09:02:37,830 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 09:02:37,831 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:37,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2132941774, now seen corresponding path program 1 times [2023-11-23 09:02:37,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:37,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517719952] [2023-11-23 09:02:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:37,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:37,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:37,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557712202] [2023-11-23 09:02:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:37,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:37,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:37,912 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 09:02:37,915 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 09:02:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:38,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 3566 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 09:02:38,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:38,760 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 09:02:38,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517719952] [2023-11-23 09:02:38,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557712202] [2023-11-23 09:02:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557712202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:38,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:02:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125929720] [2023-11-23 09:02:38,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:38,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:02:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:38,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:02:38,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:02:38,763 INFO L87 Difference]: Start difference. First operand 500 states and 768 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 09:02:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:38,910 INFO L93 Difference]: Finished difference Result 972 states and 1567 transitions. [2023-11-23 09:02:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:02:38,911 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 09:02:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:38,914 INFO L225 Difference]: With dead ends: 972 [2023-11-23 09:02:38,914 INFO L226 Difference]: Without dead ends: 503 [2023-11-23 09:02:38,919 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 09:02:38,919 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 09:02:38,919 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 09:02:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-23 09:02:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 500. [2023-11-23 09:02:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 293 states have (on average 1.2593856655290103) internal successors, (369), 296 states have internal predecessors, (369), 174 states have call successors, (174), 28 states have call predecessors, (174), 31 states have return successors, (224), 176 states have call predecessors, (224), 172 states have call successors, (224) [2023-11-23 09:02:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 767 transitions. [2023-11-23 09:02:38,938 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 767 transitions. Word has length 281 [2023-11-23 09:02:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:38,938 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 767 transitions. [2023-11-23 09:02:38,939 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 09:02:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 767 transitions. [2023-11-23 09:02:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-23 09:02:38,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:38,940 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 09:02:38,962 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 09:02:39,153 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 09:02:39,153 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:39,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1560588150, now seen corresponding path program 1 times [2023-11-23 09:02:39,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:39,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217581988] [2023-11-23 09:02:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:39,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:39,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797647187] [2023-11-23 09:02:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:39,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:39,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:39,247 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 09:02:39,255 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 09:02:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:40,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 3596 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 09:02:40,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-11-23 09:02:40,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:40,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:40,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217581988] [2023-11-23 09:02:40,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:40,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797647187] [2023-11-23 09:02:40,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797647187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:40,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:40,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:02:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488673938] [2023-11-23 09:02:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:40,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:02:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:40,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:02:40,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:02:40,248 INFO L87 Difference]: Start difference. First operand 500 states and 767 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 09:02:41,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:41,867 INFO L93 Difference]: Finished difference Result 1025 states and 1600 transitions. [2023-11-23 09:02:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:02:41,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 285 [2023-11-23 09:02:41,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:41,872 INFO L225 Difference]: With dead ends: 1025 [2023-11-23 09:02:41,872 INFO L226 Difference]: Without dead ends: 556 [2023-11-23 09:02:41,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 280 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 09:02:41,875 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 21 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:41,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2721 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 09:02:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-11-23 09:02:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 516. [2023-11-23 09:02:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 309 states have (on average 1.2588996763754046) internal successors, (389), 312 states have internal predecessors, (389), 174 states have call successors, (174), 28 states have call predecessors, (174), 31 states have return successors, (224), 176 states have call predecessors, (224), 172 states have call successors, (224) [2023-11-23 09:02:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 787 transitions. [2023-11-23 09:02:41,897 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 787 transitions. Word has length 285 [2023-11-23 09:02:41,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:41,897 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 787 transitions. [2023-11-23 09:02:41,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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 09:02:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 787 transitions. [2023-11-23 09:02:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-23 09:02:41,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:41,899 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 09:02:41,926 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 09:02:42,114 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 09:02:42,115 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:42,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:42,115 INFO L85 PathProgramCache]: Analyzing trace with hash -112450290, now seen corresponding path program 1 times [2023-11-23 09:02:42,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:42,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872949954] [2023-11-23 09:02:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:42,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:42,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407186366] [2023-11-23 09:02:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:42,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:42,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:42,268 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 09:02:42,269 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 09:02:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:43,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 3590 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 09:02:43,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-23 09:02:43,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872949954] [2023-11-23 09:02:43,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407186366] [2023-11-23 09:02:43,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407186366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:43,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:43,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:02:43,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281310162] [2023-11-23 09:02:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:43,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:02:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:02:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:02:43,143 INFO L87 Difference]: Start difference. First operand 516 states and 787 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 09:02:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:43,232 INFO L93 Difference]: Finished difference Result 1017 states and 1584 transitions. [2023-11-23 09:02:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:02:43,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 285 [2023-11-23 09:02:43,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:43,235 INFO L225 Difference]: With dead ends: 1017 [2023-11-23 09:02:43,235 INFO L226 Difference]: Without dead ends: 532 [2023-11-23 09:02:43,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 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 09:02:43,238 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 3 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1736 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 09:02:43,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1736 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:02:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-11-23 09:02:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 524. [2023-11-23 09:02:43,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 317 states have (on average 1.252365930599369) internal successors, (397), 320 states have internal predecessors, (397), 174 states have call successors, (174), 28 states have call predecessors, (174), 31 states have return successors, (224), 176 states have call predecessors, (224), 172 states have call successors, (224) [2023-11-23 09:02:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 795 transitions. [2023-11-23 09:02:43,256 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 795 transitions. Word has length 285 [2023-11-23 09:02:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:43,256 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 795 transitions. [2023-11-23 09:02:43,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 09:02:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 795 transitions. [2023-11-23 09:02:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-23 09:02:43,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:43,258 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 09:02:43,276 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 09:02:43,472 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 09:02:43,472 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:43,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash -267367790, now seen corresponding path program 1 times [2023-11-23 09:02:43,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:43,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881216751] [2023-11-23 09:02:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:43,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:43,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:43,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521951289] [2023-11-23 09:02:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:43,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:43,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:43,571 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 09:02:43,594 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 09:02:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:44,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 3580 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 09:02:44,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:44,736 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 11 treesize of output 5 [2023-11-23 09:02:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-23 09:02:44,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881216751] [2023-11-23 09:02:44,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521951289] [2023-11-23 09:02:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521951289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:44,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:44,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 09:02:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555821062] [2023-11-23 09:02:44,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:44,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 09:02:44,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 09:02:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:02:44,763 INFO L87 Difference]: Start difference. First operand 524 states and 795 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 5 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-23 09:02:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:46,803 INFO L93 Difference]: Finished difference Result 1056 states and 1652 transitions. [2023-11-23 09:02:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 09:02:46,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 5 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) Word has length 285 [2023-11-23 09:02:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:46,808 INFO L225 Difference]: With dead ends: 1056 [2023-11-23 09:02:46,808 INFO L226 Difference]: Without dead ends: 563 [2023-11-23 09:02:46,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-23 09:02:46,811 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 84 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:46,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 4620 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 09:02:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-11-23 09:02:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 525. [2023-11-23 09:02:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 317 states have (on average 1.2429022082018928) internal successors, (394), 319 states have internal predecessors, (394), 174 states have call successors, (174), 28 states have call predecessors, (174), 32 states have return successors, (243), 178 states have call predecessors, (243), 172 states have call successors, (243) [2023-11-23 09:02:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 811 transitions. [2023-11-23 09:02:46,831 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 811 transitions. Word has length 285 [2023-11-23 09:02:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:46,831 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 811 transitions. [2023-11-23 09:02:46,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 5 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-23 09:02:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 811 transitions. [2023-11-23 09:02:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-23 09:02:46,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:46,833 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 09:02:46,875 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 09:02:47,056 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 09:02:47,056 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:47,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1469508594, now seen corresponding path program 1 times [2023-11-23 09:02:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742865972] [2023-11-23 09:02:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:47,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978884572] [2023-11-23 09:02:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:47,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:47,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:47,134 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 09:02:47,152 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 09:02:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:48,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 3586 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 09:02:48,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-23 09:02:48,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:02:48,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:02:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742865972] [2023-11-23 09:02:48,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:02:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978884572] [2023-11-23 09:02:48,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978884572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:02:48,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:02:48,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:02:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729634168] [2023-11-23 09:02:48,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:02:48,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:02:48,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:02:48,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:02:48,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:02:48,455 INFO L87 Difference]: Start difference. First operand 525 states and 811 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 09:02:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:02:48,571 INFO L93 Difference]: Finished difference Result 1035 states and 1632 transitions. [2023-11-23 09:02:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:02:48,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 285 [2023-11-23 09:02:48,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:02:48,575 INFO L225 Difference]: With dead ends: 1035 [2023-11-23 09:02:48,575 INFO L226 Difference]: Without dead ends: 541 [2023-11-23 09:02:48,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 282 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 09:02:48,579 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 6 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:02:48,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2332 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:02:48,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-11-23 09:02:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 506. [2023-11-23 09:02:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 299 states have (on average 1.2374581939799332) internal successors, (370), 302 states have internal predecessors, (370), 174 states have call successors, (174), 28 states have call predecessors, (174), 31 states have return successors, (224), 176 states have call predecessors, (224), 172 states have call successors, (224) [2023-11-23 09:02:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 768 transitions. [2023-11-23 09:02:48,603 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 768 transitions. Word has length 285 [2023-11-23 09:02:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:02:48,604 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 768 transitions. [2023-11-23 09:02:48,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 09:02:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 768 transitions. [2023-11-23 09:02:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-23 09:02:48,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:02:48,606 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:48,630 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 09:02:48,832 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 09:02:48,832 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:02:48,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:02:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2098457742, now seen corresponding path program 1 times [2023-11-23 09:02:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:02:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567732565] [2023-11-23 09:02:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:48,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:02:48,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 09:02:48,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153385141] [2023-11-23 09:02:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:02:48,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:02:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:02:48,927 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 09:02:48,936 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 09:02:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:02:50,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 3570 conjuncts, 214 conjunts are in the unsatisfiable core [2023-11-23 09:02:50,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:02:50,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 111 [2023-11-23 09:02:50,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 125 [2023-11-23 09:02:50,181 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:50,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 94 [2023-11-23 09:02:50,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 09:02:50,230 INFO L349 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2023-11-23 09:02:50,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 60 [2023-11-23 09:02:50,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:50,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 20 treesize of output 32 [2023-11-23 09:02:50,278 INFO L349 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2023-11-23 09:02:50,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 60 [2023-11-23 09:02:50,291 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:50,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 20 treesize of output 32 [2023-11-23 09:02:50,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-11-23 09:02:50,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 3 [2023-11-23 09:02:50,567 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:50,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 36 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 583 [2023-11-23 09:02:50,949 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:50,978 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:50,978 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:50,987 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:50,987 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:51,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:51,059 INFO L224 Elim1Store]: Index analysis took 111 ms [2023-11-23 09:02:51,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 115 [2023-11-23 09:02:51,375 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:51,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 62 [2023-11-23 09:02:51,448 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:02:51,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 199 [2023-11-23 09:02:51,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 66 [2023-11-23 09:02:51,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-11-23 09:02:51,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2023-11-23 09:03:07,838 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (select |c_#memory_int| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.offset|))) is different from true [2023-11-23 09:03:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 400 proven. 12 refuted. 0 times theorem prover too weak. 147 trivial. 2 not checked. [2023-11-23 09:03:22,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:03:35,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:03:35,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567732565] [2023-11-23 09:03:35,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 09:03:35,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153385141] [2023-11-23 09:03:35,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153385141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:03:35,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:03:35,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2023-11-23 09:03:35,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641908960] [2023-11-23 09:03:35,004 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 09:03:35,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-23 09:03:35,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:03:35,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-23 09:03:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1845, Unknown=7, NotChecked=86, Total=2070 [2023-11-23 09:03:35,006 INFO L87 Difference]: Start difference. First operand 506 states and 768 transitions. Second operand has 39 states, 34 states have (on average 4.0) internal successors, (136), 31 states have internal predecessors, (136), 11 states have call successors, (38), 5 states have call predecessors, (38), 10 states have return successors, (36), 12 states have call predecessors, (36), 11 states have call successors, (36) [2023-11-23 09:03:38,118 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 09:04:18,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:04:23,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:04:27,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:04:29,570 WARN L539 Checker$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 09:04:31,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:04:41,812 WARN L539 Checker$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 09:05:03,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:05:08,437 WARN L539 Checker$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 09:05:10,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:05:13,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:05:17,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:05:22,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 09:05:24,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:05:29,479 WARN L539 Checker$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 09:05:32,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:05:34,508 WARN L539 Checker$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 09:05:37,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:05:49,633 WARN L539 Checker$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 09:06:04,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:07,666 WARN L539 Checker$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 09:06:10,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:12,517 WARN L539 Checker$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 09:06:14,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:06:20,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15