./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_s_sift_down_harness_negated.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_s_sift_down_harness_negated.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 01631794cdf4ae838ce2a1c9c46117bf91846552359374c86eecef39db296961 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:39:32,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:39:32,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:39:32,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:39:32,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:39:32,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:39:32,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:39:32,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:39:32,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:39:32,338 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:39:32,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:39:32,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:39:32,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:39:32,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:39:32,340 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:39:32,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:39:32,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:39:32,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:39:32,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:39:32,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:39:32,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:39:32,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:39:32,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:39:32,342 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:39:32,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:39:32,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:39:32,343 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:39:32,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:39:32,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:39:32,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:39:32,344 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:39:32,344 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:39:32,344 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:39:32,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:39:32,345 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:39:32,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:39:32,345 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:39:32,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:39:32,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:39:32,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01631794cdf4ae838ce2a1c9c46117bf91846552359374c86eecef39db296961 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:39:32,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:39:32,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:39:32,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:39:32,646 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:39:32,647 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:39:32,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_s_sift_down_harness_negated.i [2023-11-23 07:39:33,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:39:34,223 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:39:34,224 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_s_sift_down_harness_negated.i [2023-11-23 07:39:34,249 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882dd9d71/454f91f0993a4ca59e037d8218d41bfc/FLAGa931c1165 [2023-11-23 07:39:34,267 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882dd9d71/454f91f0993a4ca59e037d8218d41bfc [2023-11-23 07:39:34,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:39:34,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:39:34,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:39:34,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:39:34,276 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:39:34,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:39:34" (1/1) ... [2023-11-23 07:39:34,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603402dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:34, skipping insertion in model container [2023-11-23 07:39:34,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:39:34" (1/1) ... [2023-11-23 07:39:34,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:39:34,541 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_s_sift_down_harness_negated.i[4504,4517] [2023-11-23 07:39:34,548 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_s_sift_down_harness_negated.i[4564,4577] [2023-11-23 07:39:35,236 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,253 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,254 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,263 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,263 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,268 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,268 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,269 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,466 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:39:35,467 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:39:35,468 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:39:35,469 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:39:35,471 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:39:35,471 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:39:35,472 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:39:35,472 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:39:35,476 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:39:35,476 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:39:35,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,591 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,648 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,649 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,652 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,653 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,656 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,657 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,657 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:39:35,688 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:39:35,706 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_s_sift_down_harness_negated.i[4504,4517] [2023-11-23 07:39:35,706 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_s_sift_down_harness_negated.i[4564,4577] [2023-11-23 07:39:35,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,746 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,746 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,747 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,764 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,794 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:39:35,799 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:39:35,800 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:39:35,800 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:39:35,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:39:35,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:39:35,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:39:35,802 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:39:35,802 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:39:35,802 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:39:35,824 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,824 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,827 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7744-7755] [2023-11-23 07:39:35,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:39:35,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:39:36,010 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,010 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,010 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,010 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,010 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,010 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,011 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,011 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,011 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,011 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,011 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,011 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,011 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,011 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,012 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:39:36,017 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:39:36,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36 WrapperNode [2023-11-23 07:39:36,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:39:36,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:39:36,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:39:36,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:39:36,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,161 INFO L138 Inliner]: procedures = 696, calls = 1906, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 845 [2023-11-23 07:39:36,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:39:36,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:39:36,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:39:36,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:39:36,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,190 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,264 INFO L188 MemorySlicer]: Split 341 memory accesses to 7 slices as follows [15, 2, 3, 18, 236, 64, 3]. 69 percent of accesses are in the largest equivalence class. The 262 initializations are split as follows [4, 2, 1, 5, 236, 11, 3]. The 14 writes are split as follows [3, 0, 1, 6, 0, 4, 0]. [2023-11-23 07:39:36,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:39:36,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:39:36,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:39:36,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:39:36,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (1/1) ... [2023-11-23 07:39:36,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:39:36,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:36,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:39:36,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:39:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-23 07:39:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-23 07:39:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 07:39:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 07:39:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:39:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 07:39:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 07:39:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 07:39:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 07:39:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:39:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:39:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:39:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:39:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:39:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:39:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:39:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:39:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:39:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 07:39:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 07:39:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:39:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:39:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:39:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:39:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:39:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:39:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:39:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:39:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:39:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:39:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:39:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 07:39:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 07:39:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:39:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:39:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:39:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:39:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-23 07:39:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-23 07:39:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 07:39:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 07:39:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 07:39:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 07:39:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 07:39:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 07:39:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 07:39:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 07:39:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:39:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:39:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 07:39:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 07:39:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:39:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:39:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:39:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:39:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:39:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:39:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:39:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:39:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2023-11-23 07:39:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2023-11-23 07:39:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:39:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:39:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:39:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:39:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:39:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:39:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:39:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-23 07:39:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-23 07:39:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:39:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:39:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 07:39:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 07:39:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:39:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:39:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:39:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:39:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:39:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:39:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:39:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 07:39:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 07:39:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 07:39:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 07:39:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 07:39:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 07:39:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:39:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:39:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:39:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:39:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:39:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:39:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:39:36,750 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:39:36,751 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:39:37,450 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:39:37,526 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:39:37,526 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 07:39:37,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:39:37 BoogieIcfgContainer [2023-11-23 07:39:37,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:39:37,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:39:37,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:39:37,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:39:37,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:39:34" (1/3) ... [2023-11-23 07:39:37,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e480473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:39:37, skipping insertion in model container [2023-11-23 07:39:37,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:39:36" (2/3) ... [2023-11-23 07:39:37,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e480473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:39:37, skipping insertion in model container [2023-11-23 07:39:37,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:39:37" (3/3) ... [2023-11-23 07:39:37,535 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness_negated.i [2023-11-23 07:39:37,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:39:37,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:39:37,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:39:37,602 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;@32958a98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:39:37,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:39:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 168 states have (on average 1.2738095238095237) internal successors, (214), 169 states have internal predecessors, (214), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-23 07:39:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 07:39:37,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:37,626 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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] [2023-11-23 07:39:37,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:37,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:37,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1299356457, now seen corresponding path program 1 times [2023-11-23 07:39:37,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:37,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957324817] [2023-11-23 07:39:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:39:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 07:39:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:39:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:39:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:39:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:39:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:39:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:39:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:39:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:39:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:39:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:39:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:39:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:39:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:39:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:39:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:39:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 07:39:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:39:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 07:39:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-23 07:39:38,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:38,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957324817] [2023-11-23 07:39:38,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957324817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:38,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:38,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:39:38,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020820112] [2023-11-23 07:39:38,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:38,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:39:38,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:38,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:39:38,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:39:38,590 INFO L87 Difference]: Start difference. First operand has 297 states, 168 states have (on average 1.2738095238095237) internal successors, (214), 169 states have internal predecessors, (214), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 07:39:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:41,174 INFO L93 Difference]: Finished difference Result 670 states and 1103 transitions. [2023-11-23 07:39:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:39:41,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 142 [2023-11-23 07:39:41,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:41,196 INFO L225 Difference]: With dead ends: 670 [2023-11-23 07:39:41,220 INFO L226 Difference]: Without dead ends: 391 [2023-11-23 07:39:41,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:39:41,265 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 113 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:41,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 489 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 07:39:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-23 07:39:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 295. [2023-11-23 07:39:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 167 states have (on average 1.2335329341317365) internal successors, (206), 168 states have internal predecessors, (206), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-23 07:39:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 413 transitions. [2023-11-23 07:39:41,376 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 413 transitions. Word has length 142 [2023-11-23 07:39:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:41,376 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 413 transitions. [2023-11-23 07:39:41,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 07:39:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 413 transitions. [2023-11-23 07:39:41,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 07:39:41,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:41,382 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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] [2023-11-23 07:39:41,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:39:41,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:41,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1215085787, now seen corresponding path program 1 times [2023-11-23 07:39:41,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:41,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447156371] [2023-11-23 07:39:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:39:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 07:39:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:39:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:39:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:39:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:39:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:39:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:39:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:39:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:39:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:39:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:39:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:39:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:39:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:39:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:39:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:39:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 07:39:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:39:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 07:39:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-23 07:39:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447156371] [2023-11-23 07:39:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447156371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:39:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865734332] [2023-11-23 07:39:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:42,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:42,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:42,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:42,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:39:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:42,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:39:42,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 07:39:42,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865734332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:42,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:39:42,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 07:39:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219422176] [2023-11-23 07:39:42,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:42,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:39:42,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:39:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:39:42,645 INFO L87 Difference]: Start difference. First operand 295 states and 413 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 07:39:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:42,899 INFO L93 Difference]: Finished difference Result 549 states and 773 transitions. [2023-11-23 07:39:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:39:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 142 [2023-11-23 07:39:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:42,902 INFO L225 Difference]: With dead ends: 549 [2023-11-23 07:39:42,902 INFO L226 Difference]: Without dead ends: 297 [2023-11-23 07:39:42,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:39:42,904 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 46 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:42,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1394 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:39:42,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-23 07:39:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-11-23 07:39:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 168 states have (on average 1.2321428571428572) internal successors, (207), 170 states have internal predecessors, (207), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2023-11-23 07:39:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 418 transitions. [2023-11-23 07:39:42,927 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 418 transitions. Word has length 142 [2023-11-23 07:39:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:42,928 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 418 transitions. [2023-11-23 07:39:42,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 07:39:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 418 transitions. [2023-11-23 07:39:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 07:39:42,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:42,929 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:42,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:43,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:43,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:43,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1009060795, now seen corresponding path program 1 times [2023-11-23 07:39:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:43,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633577403] [2023-11-23 07:39:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:39:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:39:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 07:39:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:39:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:39:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:39:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:39:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:39:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:39:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:39:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:39:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:39:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:39:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:39:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:39:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:39:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:39:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:39:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:39:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:39:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:39:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 07:39:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 07:39:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:39:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-23 07:39:43,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633577403] [2023-11-23 07:39:43,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633577403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:39:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360829992] [2023-11-23 07:39:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:43,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:43,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:43,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:43,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:39:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:44,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:39:44,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 07:39:44,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:44,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360829992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:44,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:39:44,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-23 07:39:44,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409946292] [2023-11-23 07:39:44,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:44,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:39:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:39:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:39:44,446 INFO L87 Difference]: Start difference. First operand 297 states and 418 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 07:39:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:44,918 INFO L93 Difference]: Finished difference Result 572 states and 820 transitions. [2023-11-23 07:39:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:39:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 150 [2023-11-23 07:39:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:44,922 INFO L225 Difference]: With dead ends: 572 [2023-11-23 07:39:44,922 INFO L226 Difference]: Without dead ends: 318 [2023-11-23 07:39:44,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:39:44,924 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 81 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:44,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 2074 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:39:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-23 07:39:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2023-11-23 07:39:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.2445652173913044) internal successors, (229), 186 states have internal predecessors, (229), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-23 07:39:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 455 transitions. [2023-11-23 07:39:44,945 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 455 transitions. Word has length 150 [2023-11-23 07:39:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:44,945 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 455 transitions. [2023-11-23 07:39:44,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 07:39:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 455 transitions. [2023-11-23 07:39:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-23 07:39:44,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:44,947 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 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] [2023-11-23 07:39:44,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:45,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 07:39:45,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:45,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:45,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1053521137, now seen corresponding path program 1 times [2023-11-23 07:39:45,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:45,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789452343] [2023-11-23 07:39:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:45,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:45,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:45,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131109997] [2023-11-23 07:39:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:45,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:45,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:45,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:45,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:39:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:45,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:39:45,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 07:39:45,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:45,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:45,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789452343] [2023-11-23 07:39:45,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:45,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131109997] [2023-11-23 07:39:45,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131109997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:45,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:45,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:39:45,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855259303] [2023-11-23 07:39:45,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:45,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:39:45,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:39:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:39:45,833 INFO L87 Difference]: Start difference. First operand 316 states and 455 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-23 07:39:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:46,181 INFO L93 Difference]: Finished difference Result 595 states and 864 transitions. [2023-11-23 07:39:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:39:46,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 163 [2023-11-23 07:39:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:46,185 INFO L225 Difference]: With dead ends: 595 [2023-11-23 07:39:46,185 INFO L226 Difference]: Without dead ends: 322 [2023-11-23 07:39:46,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:39:46,188 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 65 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:46,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1710 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:39:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-23 07:39:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2023-11-23 07:39:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.2445652173913044) internal successors, (229), 186 states have internal predecessors, (229), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-23 07:39:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 455 transitions. [2023-11-23 07:39:46,213 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 455 transitions. Word has length 163 [2023-11-23 07:39:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:46,213 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 455 transitions. [2023-11-23 07:39:46,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-23 07:39:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 455 transitions. [2023-11-23 07:39:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 07:39:46,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:46,215 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:46,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:46,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:46,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:46,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:46,433 INFO L85 PathProgramCache]: Analyzing trace with hash 869983038, now seen corresponding path program 1 times [2023-11-23 07:39:46,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:46,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042542427] [2023-11-23 07:39:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:46,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:46,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:46,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946857142] [2023-11-23 07:39:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:46,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:46,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:46,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:46,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:39:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:47,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:39:47,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-23 07:39:47,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:47,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:47,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042542427] [2023-11-23 07:39:47,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:47,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946857142] [2023-11-23 07:39:47,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946857142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:47,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:47,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:39:47,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826647836] [2023-11-23 07:39:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:47,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:39:47,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:47,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:39:47,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:39:47,121 INFO L87 Difference]: Start difference. First operand 316 states and 455 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-11-23 07:39:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:47,621 INFO L93 Difference]: Finished difference Result 621 states and 902 transitions. [2023-11-23 07:39:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:39:47,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 179 [2023-11-23 07:39:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:47,625 INFO L225 Difference]: With dead ends: 621 [2023-11-23 07:39:47,625 INFO L226 Difference]: Without dead ends: 348 [2023-11-23 07:39:47,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:39:47,627 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 116 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:47,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2296 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:39:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-23 07:39:47,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 316. [2023-11-23 07:39:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.2445652173913044) internal successors, (229), 186 states have internal predecessors, (229), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-23 07:39:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 455 transitions. [2023-11-23 07:39:47,655 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 455 transitions. Word has length 179 [2023-11-23 07:39:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:47,657 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 455 transitions. [2023-11-23 07:39:47,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-11-23 07:39:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 455 transitions. [2023-11-23 07:39:47,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-23 07:39:47,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:47,660 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:47,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:47,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:47,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:47,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1034753592, now seen corresponding path program 2 times [2023-11-23 07:39:47,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:47,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740954310] [2023-11-23 07:39:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:47,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:47,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365688774] [2023-11-23 07:39:47,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:39:47,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:47,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:47,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:47,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:39:48,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 07:39:48,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:39:48,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1826 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:39:48,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 07:39:48,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:48,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:48,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740954310] [2023-11-23 07:39:48,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:48,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365688774] [2023-11-23 07:39:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365688774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:48,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:48,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:39:48,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983033202] [2023-11-23 07:39:48,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:39:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:48,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:39:48,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:39:48,382 INFO L87 Difference]: Start difference. First operand 316 states and 455 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-23 07:39:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:48,677 INFO L93 Difference]: Finished difference Result 324 states and 463 transitions. [2023-11-23 07:39:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:39:48,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) Word has length 192 [2023-11-23 07:39:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:48,679 INFO L225 Difference]: With dead ends: 324 [2023-11-23 07:39:48,679 INFO L226 Difference]: Without dead ends: 322 [2023-11-23 07:39:48,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:39:48,681 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 5 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:48,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1909 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:39:48,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-23 07:39:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2023-11-23 07:39:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 187 states have (on average 1.2406417112299466) internal successors, (232), 189 states have internal predecessors, (232), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2023-11-23 07:39:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 460 transitions. [2023-11-23 07:39:48,700 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 460 transitions. Word has length 192 [2023-11-23 07:39:48,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:48,703 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 460 transitions. [2023-11-23 07:39:48,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-23 07:39:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 460 transitions. [2023-11-23 07:39:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-23 07:39:48,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:48,705 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:48,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:48,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:48,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:48,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash 685465394, now seen corresponding path program 3 times [2023-11-23 07:39:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:48,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242483501] [2023-11-23 07:39:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:48,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:48,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:48,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214019175] [2023-11-23 07:39:48,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:39:48,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:48,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:48,981 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:48,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:39:49,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 07:39:49,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:39:49,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 07:39:49,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 07:39:49,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:39:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-23 07:39:50,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:50,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242483501] [2023-11-23 07:39:50,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:50,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214019175] [2023-11-23 07:39:50,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214019175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:39:50,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:39:50,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2023-11-23 07:39:50,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198505587] [2023-11-23 07:39:50,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:39:50,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:39:50,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:50,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:39:50,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:39:50,114 INFO L87 Difference]: Start difference. First operand 321 states and 460 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 07:39:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:50,558 INFO L93 Difference]: Finished difference Result 571 states and 834 transitions. [2023-11-23 07:39:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:39:50,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 205 [2023-11-23 07:39:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:50,561 INFO L225 Difference]: With dead ends: 571 [2023-11-23 07:39:50,561 INFO L226 Difference]: Without dead ends: 328 [2023-11-23 07:39:50,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:39:50,563 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 21 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:50,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1803 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:39:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-23 07:39:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2023-11-23 07:39:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 190 states have (on average 1.236842105263158) internal successors, (235), 191 states have internal predecessors, (235), 109 states have call successors, (109), 25 states have call predecessors, (109), 26 states have return successors, (123), 109 states have call predecessors, (123), 108 states have call successors, (123) [2023-11-23 07:39:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 467 transitions. [2023-11-23 07:39:50,580 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 467 transitions. Word has length 205 [2023-11-23 07:39:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:50,581 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 467 transitions. [2023-11-23 07:39:50,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 07:39:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 467 transitions. [2023-11-23 07:39:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-23 07:39:50,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:50,582 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:50,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:50,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:50,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:50,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash -861671620, now seen corresponding path program 1 times [2023-11-23 07:39:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368652705] [2023-11-23 07:39:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:50,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:50,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:50,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56075231] [2023-11-23 07:39:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:50,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:50,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:50,858 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:50,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:39:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:51,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 3374 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:39:51,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-23 07:39:51,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:51,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:51,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368652705] [2023-11-23 07:39:51,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:51,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56075231] [2023-11-23 07:39:51,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56075231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:51,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:39:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781601249] [2023-11-23 07:39:51,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:51,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:39:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:51,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:39:51,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:39:51,491 INFO L87 Difference]: Start difference. First operand 326 states and 467 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-23 07:39:51,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:51,834 INFO L93 Difference]: Finished difference Result 581 states and 841 transitions. [2023-11-23 07:39:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:39:51,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) Word has length 206 [2023-11-23 07:39:51,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:51,837 INFO L225 Difference]: With dead ends: 581 [2023-11-23 07:39:51,837 INFO L226 Difference]: Without dead ends: 328 [2023-11-23 07:39:51,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:39:51,839 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 83 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:51,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2048 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:39:51,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-23 07:39:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2023-11-23 07:39:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 191 states have (on average 1.2356020942408377) internal successors, (236), 193 states have internal predecessors, (236), 109 states have call successors, (109), 25 states have call predecessors, (109), 27 states have return successors, (125), 109 states have call predecessors, (125), 108 states have call successors, (125) [2023-11-23 07:39:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 470 transitions. [2023-11-23 07:39:51,854 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 470 transitions. Word has length 206 [2023-11-23 07:39:51,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:51,855 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 470 transitions. [2023-11-23 07:39:51,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-23 07:39:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 470 transitions. [2023-11-23 07:39:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-23 07:39:51,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:51,857 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-23 07:39:51,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:52,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:52,073 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:52,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:52,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1030698474, now seen corresponding path program 1 times [2023-11-23 07:39:52,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:52,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056558445] [2023-11-23 07:39:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:52,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005102044] [2023-11-23 07:39:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:52,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:52,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:52,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:52,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 07:39:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:52,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 3936 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:39:52,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-11-23 07:39:52,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:52,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:52,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056558445] [2023-11-23 07:39:52,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:52,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005102044] [2023-11-23 07:39:52,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005102044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:52,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:52,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:39:52,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756606762] [2023-11-23 07:39:52,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:39:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:39:52,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:39:52,877 INFO L87 Difference]: Start difference. First operand 328 states and 470 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2023-11-23 07:39:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:53,303 INFO L93 Difference]: Finished difference Result 586 states and 848 transitions. [2023-11-23 07:39:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:39:53,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) Word has length 239 [2023-11-23 07:39:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:53,306 INFO L225 Difference]: With dead ends: 586 [2023-11-23 07:39:53,307 INFO L226 Difference]: Without dead ends: 331 [2023-11-23 07:39:53,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:39:53,309 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 102 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:53,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 2345 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:39:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-23 07:39:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2023-11-23 07:39:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 192 states have (on average 1.234375) internal successors, (237), 194 states have internal predecessors, (237), 109 states have call successors, (109), 25 states have call predecessors, (109), 27 states have return successors, (125), 109 states have call predecessors, (125), 108 states have call successors, (125) [2023-11-23 07:39:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 471 transitions. [2023-11-23 07:39:53,328 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 471 transitions. Word has length 239 [2023-11-23 07:39:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:53,329 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 471 transitions. [2023-11-23 07:39:53,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 4 states have call predecessors, (31), 5 states have call successors, (31) [2023-11-23 07:39:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 471 transitions. [2023-11-23 07:39:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-23 07:39:53,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:53,332 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:53,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:53,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 07:39:53,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:53,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash -521784539, now seen corresponding path program 1 times [2023-11-23 07:39:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:53,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651687670] [2023-11-23 07:39:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:53,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:53,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445335873] [2023-11-23 07:39:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:53,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:53,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:53,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 07:39:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:54,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 3869 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:39:54,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 189 proven. 3 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-11-23 07:39:54,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:39:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-11-23 07:39:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651687670] [2023-11-23 07:39:54,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445335873] [2023-11-23 07:39:54,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445335873] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:39:54,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:39:54,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-23 07:39:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39832615] [2023-11-23 07:39:54,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:39:54,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:39:54,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:39:54,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:39:54,620 INFO L87 Difference]: Start difference. First operand 329 states and 471 transitions. Second operand has 14 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 9 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (55), 5 states have call predecessors, (55), 9 states have call successors, (55) [2023-11-23 07:39:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:39:55,309 INFO L93 Difference]: Finished difference Result 604 states and 873 transitions. [2023-11-23 07:39:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:39:55,310 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 9 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (55), 5 states have call predecessors, (55), 9 states have call successors, (55) Word has length 242 [2023-11-23 07:39:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:39:55,312 INFO L225 Difference]: With dead ends: 604 [2023-11-23 07:39:55,312 INFO L226 Difference]: Without dead ends: 348 [2023-11-23 07:39:55,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:39:55,314 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 139 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:39:55,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 3375 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:39:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-23 07:39:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 342. [2023-11-23 07:39:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 204 states have (on average 1.2450980392156863) internal successors, (254), 205 states have internal predecessors, (254), 110 states have call successors, (110), 25 states have call predecessors, (110), 27 states have return successors, (126), 111 states have call predecessors, (126), 109 states have call successors, (126) [2023-11-23 07:39:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 490 transitions. [2023-11-23 07:39:55,336 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 490 transitions. Word has length 242 [2023-11-23 07:39:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:39:55,337 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 490 transitions. [2023-11-23 07:39:55,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.166666666666666) internal successors, (122), 12 states have internal predecessors, (122), 9 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (55), 5 states have call predecessors, (55), 9 states have call successors, (55) [2023-11-23 07:39:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 490 transitions. [2023-11-23 07:39:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-23 07:39:55,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:39:55,339 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:39:55,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 07:39:55,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 07:39:55,557 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:39:55,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:39:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash -70009943, now seen corresponding path program 1 times [2023-11-23 07:39:55,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:39:55,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227196493] [2023-11-23 07:39:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:55,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:39:55,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:39:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445330064] [2023-11-23 07:39:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:39:55,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:39:55,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:39:55,781 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:39:55,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 07:39:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:39:56,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 4243 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-23 07:39:56,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:39:56,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:39:56,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:39:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-23 07:39:57,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:39:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:39:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227196493] [2023-11-23 07:39:57,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:39:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445330064] [2023-11-23 07:39:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445330064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:39:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:39:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 07:39:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750167658] [2023-11-23 07:39:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:39:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:39:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:39:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:39:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:39:57,308 INFO L87 Difference]: Start difference. First operand 342 states and 490 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:00,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:00,981 INFO L93 Difference]: Finished difference Result 677 states and 990 transitions. [2023-11-23 07:40:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:40:00,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 268 [2023-11-23 07:40:00,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:00,984 INFO L225 Difference]: With dead ends: 677 [2023-11-23 07:40:00,984 INFO L226 Difference]: Without dead ends: 378 [2023-11-23 07:40:00,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:40:00,996 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 251 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:00,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1516 Invalid, 3301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 07:40:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-23 07:40:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 367. [2023-11-23 07:40:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 228 states have (on average 1.2587719298245614) internal successors, (287), 228 states have internal predecessors, (287), 110 states have call successors, (110), 25 states have call predecessors, (110), 28 states have return successors, (137), 113 states have call predecessors, (137), 109 states have call successors, (137) [2023-11-23 07:40:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 534 transitions. [2023-11-23 07:40:01,039 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 534 transitions. Word has length 268 [2023-11-23 07:40:01,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:01,040 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 534 transitions. [2023-11-23 07:40:01,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 534 transitions. [2023-11-23 07:40:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-23 07:40:01,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:01,043 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:01,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:01,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 07:40:01,264 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:01,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash 747583021, now seen corresponding path program 1 times [2023-11-23 07:40:01,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:01,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020864174] [2023-11-23 07:40:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:01,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:01,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794489027] [2023-11-23 07:40:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:01,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:01,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:01,352 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:01,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 07:40:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:02,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 4233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:40:02,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-23 07:40:02,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:02,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020864174] [2023-11-23 07:40:02,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794489027] [2023-11-23 07:40:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794489027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:02,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:02,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:40:02,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584363878] [2023-11-23 07:40:02,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:02,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:40:02,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:02,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:40:02,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:40:02,144 INFO L87 Difference]: Start difference. First operand 367 states and 534 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:02,376 INFO L93 Difference]: Finished difference Result 694 states and 1044 transitions. [2023-11-23 07:40:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:40:02,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 268 [2023-11-23 07:40:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:02,379 INFO L225 Difference]: With dead ends: 694 [2023-11-23 07:40:02,379 INFO L226 Difference]: Without dead ends: 370 [2023-11-23 07:40:02,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:40:02,381 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 7 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:02,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1156 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:40:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-23 07:40:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 367. [2023-11-23 07:40:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 228 states have (on average 1.2543859649122806) internal successors, (286), 228 states have internal predecessors, (286), 110 states have call successors, (110), 25 states have call predecessors, (110), 28 states have return successors, (137), 113 states have call predecessors, (137), 109 states have call successors, (137) [2023-11-23 07:40:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 533 transitions. [2023-11-23 07:40:02,398 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 533 transitions. Word has length 268 [2023-11-23 07:40:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:02,398 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 533 transitions. [2023-11-23 07:40:02,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 533 transitions. [2023-11-23 07:40:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-23 07:40:02,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:02,400 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:02,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:02,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 07:40:02,615 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:02,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -150717953, now seen corresponding path program 1 times [2023-11-23 07:40:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582898365] [2023-11-23 07:40:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:02,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:02,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:02,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943772130] [2023-11-23 07:40:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:02,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:02,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:02,698 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:02,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:40:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:03,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 4061 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 07:40:03,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 07:40:03,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:03,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582898365] [2023-11-23 07:40:03,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943772130] [2023-11-23 07:40:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943772130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:03,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:03,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 07:40:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485079800] [2023-11-23 07:40:03,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:03,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:40:03,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:40:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:40:03,513 INFO L87 Difference]: Start difference. First operand 367 states and 533 transitions. Second operand has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 07:40:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:04,346 INFO L93 Difference]: Finished difference Result 677 states and 991 transitions. [2023-11-23 07:40:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:40:04,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 257 [2023-11-23 07:40:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:04,351 INFO L225 Difference]: With dead ends: 677 [2023-11-23 07:40:04,351 INFO L226 Difference]: Without dead ends: 383 [2023-11-23 07:40:04,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:40:04,353 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 153 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:04,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 2891 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:40:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-23 07:40:04,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 351. [2023-11-23 07:40:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 214 states have (on average 1.2476635514018692) internal successors, (267), 214 states have internal predecessors, (267), 109 states have call successors, (109), 25 states have call predecessors, (109), 27 states have return successors, (132), 111 states have call predecessors, (132), 108 states have call successors, (132) [2023-11-23 07:40:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 508 transitions. [2023-11-23 07:40:04,397 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 508 transitions. Word has length 257 [2023-11-23 07:40:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:04,398 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 508 transitions. [2023-11-23 07:40:04,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 6 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-23 07:40:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 508 transitions. [2023-11-23 07:40:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-23 07:40:04,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:04,401 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:04,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:04,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 07:40:04,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:04,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:04,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1413064181, now seen corresponding path program 1 times [2023-11-23 07:40:04,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:04,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194784783] [2023-11-23 07:40:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:04,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962491948] [2023-11-23 07:40:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:04,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:04,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:04,761 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:04,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:40:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:06,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 4253 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-23 07:40:06,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:06,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:40:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-11-23 07:40:06,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:06,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:06,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194784783] [2023-11-23 07:40:06,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962491948] [2023-11-23 07:40:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962491948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:06,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:06,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 07:40:06,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608947127] [2023-11-23 07:40:06,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:06,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:40:06,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:40:06,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:40:06,950 INFO L87 Difference]: Start difference. First operand 351 states and 508 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:09,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:09,599 INFO L93 Difference]: Finished difference Result 691 states and 1020 transitions. [2023-11-23 07:40:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:40:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 272 [2023-11-23 07:40:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:09,602 INFO L225 Difference]: With dead ends: 691 [2023-11-23 07:40:09,602 INFO L226 Difference]: Without dead ends: 383 [2023-11-23 07:40:09,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:40:09,604 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 202 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:09,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1231 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 07:40:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-23 07:40:09,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 363. [2023-11-23 07:40:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 225 states have (on average 1.2444444444444445) internal successors, (280), 224 states have internal predecessors, (280), 109 states have call successors, (109), 25 states have call predecessors, (109), 28 states have return successors, (143), 113 states have call predecessors, (143), 108 states have call successors, (143) [2023-11-23 07:40:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 532 transitions. [2023-11-23 07:40:09,646 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 532 transitions. Word has length 272 [2023-11-23 07:40:09,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:09,647 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 532 transitions. [2023-11-23 07:40:09,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 532 transitions. [2023-11-23 07:40:09,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-23 07:40:09,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:09,648 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:09,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:09,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 07:40:09,860 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:09,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:09,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1640828785, now seen corresponding path program 1 times [2023-11-23 07:40:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099533972] [2023-11-23 07:40:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:09,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:09,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617485247] [2023-11-23 07:40:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:09,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:09,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:09,927 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:09,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 07:40:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:10,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 4243 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:40:10,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-23 07:40:10,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:10,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099533972] [2023-11-23 07:40:10,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617485247] [2023-11-23 07:40:10,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617485247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:10,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:10,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:40:10,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882854168] [2023-11-23 07:40:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:10,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:40:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:10,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:40:10,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:40:10,851 INFO L87 Difference]: Start difference. First operand 363 states and 532 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 07:40:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:11,065 INFO L93 Difference]: Finished difference Result 715 states and 1058 transitions. [2023-11-23 07:40:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:40:11,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 272 [2023-11-23 07:40:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:11,068 INFO L225 Difference]: With dead ends: 715 [2023-11-23 07:40:11,068 INFO L226 Difference]: Without dead ends: 395 [2023-11-23 07:40:11,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:40:11,069 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 6 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:11,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1560 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:40:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-23 07:40:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 363. [2023-11-23 07:40:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 225 states have (on average 1.2444444444444445) internal successors, (280), 224 states have internal predecessors, (280), 109 states have call successors, (109), 25 states have call predecessors, (109), 28 states have return successors, (143), 113 states have call predecessors, (143), 108 states have call successors, (143) [2023-11-23 07:40:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 532 transitions. [2023-11-23 07:40:11,087 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 532 transitions. Word has length 272 [2023-11-23 07:40:11,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:11,087 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 532 transitions. [2023-11-23 07:40:11,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 07:40:11,088 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 532 transitions. [2023-11-23 07:40:11,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-23 07:40:11,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:11,089 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:11,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:11,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:11,305 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:11,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:11,305 INFO L85 PathProgramCache]: Analyzing trace with hash 24761201, now seen corresponding path program 1 times [2023-11-23 07:40:11,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:11,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132894039] [2023-11-23 07:40:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:11,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:11,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:11,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073198488] [2023-11-23 07:40:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:11,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:11,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:11,367 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:11,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 07:40:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:12,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 4263 conjuncts, 132 conjunts are in the unsatisfiable core [2023-11-23 07:40:12,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:12,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:40:12,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:40:12,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:40:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-11-23 07:40:13,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:13,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:13,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132894039] [2023-11-23 07:40:13,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:13,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073198488] [2023-11-23 07:40:13,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073198488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:13,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:13,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 07:40:13,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031284430] [2023-11-23 07:40:13,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:13,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:40:13,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:13,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:40:13,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:40:13,448 INFO L87 Difference]: Start difference. First operand 363 states and 532 transitions. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:17,484 INFO L93 Difference]: Finished difference Result 740 states and 1110 transitions. [2023-11-23 07:40:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 07:40:17,484 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 272 [2023-11-23 07:40:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:17,487 INFO L225 Difference]: With dead ends: 740 [2023-11-23 07:40:17,487 INFO L226 Difference]: Without dead ends: 420 [2023-11-23 07:40:17,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:40:17,489 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 218 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 3671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:17,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1447 Invalid, 3671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-23 07:40:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-11-23 07:40:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 365. [2023-11-23 07:40:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 227 states have (on average 1.2466960352422907) internal successors, (283), 226 states have internal predecessors, (283), 109 states have call successors, (109), 25 states have call predecessors, (109), 28 states have return successors, (143), 113 states have call predecessors, (143), 108 states have call successors, (143) [2023-11-23 07:40:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 535 transitions. [2023-11-23 07:40:17,510 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 535 transitions. Word has length 272 [2023-11-23 07:40:17,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:17,510 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 535 transitions. [2023-11-23 07:40:17,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 7 states have call successors, (36), 3 states have call predecessors, (36), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-23 07:40:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 535 transitions. [2023-11-23 07:40:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-23 07:40:17,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:17,512 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:17,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:17,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 07:40:17,725 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:17,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1625744501, now seen corresponding path program 1 times [2023-11-23 07:40:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409976727] [2023-11-23 07:40:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:17,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:17,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:17,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761267122] [2023-11-23 07:40:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:17,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:17,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:17,786 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:17,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 07:40:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:18,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 4253 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:40:18,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-11-23 07:40:18,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409976727] [2023-11-23 07:40:18,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761267122] [2023-11-23 07:40:18,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761267122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:18,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:18,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:40:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950141871] [2023-11-23 07:40:18,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:18,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:40:18,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:40:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:40:18,909 INFO L87 Difference]: Start difference. First operand 365 states and 535 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 07:40:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:19,316 INFO L93 Difference]: Finished difference Result 745 states and 1098 transitions. [2023-11-23 07:40:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:40:19,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 272 [2023-11-23 07:40:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:19,319 INFO L225 Difference]: With dead ends: 745 [2023-11-23 07:40:19,320 INFO L226 Difference]: Without dead ends: 423 [2023-11-23 07:40:19,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:40:19,322 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 21 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:19,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1795 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:40:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-23 07:40:19,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 381. [2023-11-23 07:40:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 243 states have (on average 1.2469135802469136) internal successors, (303), 242 states have internal predecessors, (303), 109 states have call successors, (109), 25 states have call predecessors, (109), 28 states have return successors, (143), 113 states have call predecessors, (143), 108 states have call successors, (143) [2023-11-23 07:40:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 555 transitions. [2023-11-23 07:40:19,340 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 555 transitions. Word has length 272 [2023-11-23 07:40:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:19,340 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 555 transitions. [2023-11-23 07:40:19,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 07:40:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 555 transitions. [2023-11-23 07:40:19,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-23 07:40:19,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:19,342 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:19,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:19,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 07:40:19,556 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:19,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1442741489, now seen corresponding path program 1 times [2023-11-23 07:40:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:19,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379350046] [2023-11-23 07:40:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:19,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:19,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885233417] [2023-11-23 07:40:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:19,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:19,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:19,644 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:19,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 07:40:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:20,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 4247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:40:20,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 07:40:20,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:20,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379350046] [2023-11-23 07:40:20,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885233417] [2023-11-23 07:40:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885233417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:20,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:20,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:40:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250646714] [2023-11-23 07:40:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:20,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:40:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:40:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:40:20,448 INFO L87 Difference]: Start difference. First operand 381 states and 555 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:20,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:20,634 INFO L93 Difference]: Finished difference Result 735 states and 1080 transitions. [2023-11-23 07:40:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:40:20,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 272 [2023-11-23 07:40:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:20,637 INFO L225 Difference]: With dead ends: 735 [2023-11-23 07:40:20,637 INFO L226 Difference]: Without dead ends: 397 [2023-11-23 07:40:20,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:40:20,639 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 3 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:20,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1148 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:40:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-23 07:40:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 389. [2023-11-23 07:40:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 251 states have (on average 1.2390438247011952) internal successors, (311), 250 states have internal predecessors, (311), 109 states have call successors, (109), 25 states have call predecessors, (109), 28 states have return successors, (143), 113 states have call predecessors, (143), 108 states have call successors, (143) [2023-11-23 07:40:20,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 563 transitions. [2023-11-23 07:40:20,664 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 563 transitions. Word has length 272 [2023-11-23 07:40:20,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:20,664 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 563 transitions. [2023-11-23 07:40:20,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 07:40:20,664 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 563 transitions. [2023-11-23 07:40:20,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-23 07:40:20,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:20,665 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:20,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 07:40:20,880 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:20,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:20,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1406796909, now seen corresponding path program 1 times [2023-11-23 07:40:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:20,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158601065] [2023-11-23 07:40:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:20,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660980797] [2023-11-23 07:40:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:20,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:20,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:20,940 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:20,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 07:40:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:22,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 4237 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-23 07:40:22,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:22,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:40:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-11-23 07:40:22,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:22,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:22,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158601065] [2023-11-23 07:40:22,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:22,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660980797] [2023-11-23 07:40:22,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660980797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:22,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:22,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 07:40:22,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866711936] [2023-11-23 07:40:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:22,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:40:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:40:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:40:22,909 INFO L87 Difference]: Start difference. First operand 389 states and 563 transitions. Second operand has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 6 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-23 07:40:24,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:24,305 INFO L93 Difference]: Finished difference Result 715 states and 1051 transitions. [2023-11-23 07:40:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:40:24,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 6 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) Word has length 272 [2023-11-23 07:40:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:24,307 INFO L225 Difference]: With dead ends: 715 [2023-11-23 07:40:24,307 INFO L226 Difference]: Without dead ends: 404 [2023-11-23 07:40:24,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:40:24,309 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 171 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:24,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1549 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:40:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-23 07:40:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2023-11-23 07:40:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 257 states have (on average 1.2334630350194553) internal successors, (317), 256 states have internal predecessors, (317), 117 states have call successors, (117), 26 states have call predecessors, (117), 29 states have return successors, (157), 121 states have call predecessors, (157), 116 states have call successors, (157) [2023-11-23 07:40:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 591 transitions. [2023-11-23 07:40:24,328 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 591 transitions. Word has length 272 [2023-11-23 07:40:24,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:24,328 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 591 transitions. [2023-11-23 07:40:24,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 6 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-23 07:40:24,328 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 591 transitions. [2023-11-23 07:40:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-23 07:40:24,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:24,330 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:24,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:24,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:24,544 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:24,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1850697583, now seen corresponding path program 1 times [2023-11-23 07:40:24,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:24,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130941011] [2023-11-23 07:40:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:24,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:24,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:24,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613585095] [2023-11-23 07:40:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:24,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:24,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:24,605 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:24,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 07:40:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:25,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 4242 conjuncts, 130 conjunts are in the unsatisfiable core [2023-11-23 07:40:25,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:25,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:40:25,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:40:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-11-23 07:40:26,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:40:26,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:26,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130941011] [2023-11-23 07:40:26,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:26,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613585095] [2023-11-23 07:40:26,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613585095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:40:26,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:40:26,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-23 07:40:26,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603849540] [2023-11-23 07:40:26,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:40:26,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 07:40:26,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:26,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 07:40:26,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:40:26,207 INFO L87 Difference]: Start difference. First operand 404 states and 591 transitions. Second operand has 18 states, 17 states have (on average 5.647058823529412) internal successors, (96), 16 states have internal predecessors, (96), 9 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2023-11-23 07:40:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:28,823 INFO L93 Difference]: Finished difference Result 727 states and 1080 transitions. [2023-11-23 07:40:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 07:40:28,824 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.647058823529412) internal successors, (96), 16 states have internal predecessors, (96), 9 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 272 [2023-11-23 07:40:28,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:28,830 INFO L225 Difference]: With dead ends: 727 [2023-11-23 07:40:28,830 INFO L226 Difference]: Without dead ends: 409 [2023-11-23 07:40:28,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2023-11-23 07:40:28,833 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 238 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 3452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:28,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 2378 Invalid, 3452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 07:40:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-23 07:40:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2023-11-23 07:40:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 259 states have (on average 1.2316602316602316) internal successors, (319), 259 states have internal predecessors, (319), 117 states have call successors, (117), 26 states have call predecessors, (117), 30 states have return successors, (168), 121 states have call predecessors, (168), 116 states have call successors, (168) [2023-11-23 07:40:28,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 604 transitions. [2023-11-23 07:40:28,858 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 604 transitions. Word has length 272 [2023-11-23 07:40:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:28,859 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 604 transitions. [2023-11-23 07:40:28,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.647058823529412) internal successors, (96), 16 states have internal predecessors, (96), 9 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2023-11-23 07:40:28,859 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 604 transitions. [2023-11-23 07:40:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-23 07:40:28,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:28,861 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:28,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:29,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:29,072 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:29,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:29,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2013425443, now seen corresponding path program 1 times [2023-11-23 07:40:29,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:29,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100700725] [2023-11-23 07:40:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:29,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:29,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:29,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935962090] [2023-11-23 07:40:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:29,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:29,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:29,139 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:29,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 07:40:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:30,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 4252 conjuncts, 184 conjunts are in the unsatisfiable core [2023-11-23 07:40:30,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:30,402 WARN L876 $PredicateComparison]: unable to prove that (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#5.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset)))) (<= ensure_array_list_has_allocated_data_member_~list.offset |c_ensure_array_list_has_allocated_data_member_#in~list.offset|) (= |c_#memory_$Pointer$#5.offset| (store |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#5.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset)))))) is different from true [2023-11-23 07:40:30,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:40:30,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:40:30,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:40:30,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:40:30,521 WARN L876 $PredicateComparison]: unable to prove that (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#5.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset)))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= |c_#memory_$Pointer$#5.offset| (store |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#5.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset)))))) is different from true [2023-11-23 07:40:30,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:40:30,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:40:30,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:40:30,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:40:30,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:40:30,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:40:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 255 proven. 14 refuted. 0 times theorem prover too weak. 215 trivial. 2 not checked. [2023-11-23 07:40:31,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:40:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:40:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100700725] [2023-11-23 07:40:32,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:40:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935962090] [2023-11-23 07:40:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935962090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:40:32,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:40:32,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-23 07:40:32,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025133797] [2023-11-23 07:40:32,559 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:40:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 07:40:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:40:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 07:40:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=725, Unknown=2, NotChecked=110, Total=930 [2023-11-23 07:40:32,561 INFO L87 Difference]: Start difference. First operand 407 states and 604 transitions. Second operand has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 9 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2023-11-23 07:40:33,532 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|)) (.cse1 (select |c_#memory_$Pointer$#5.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|)) (.cse2 (select |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|)) (.cse3 (select |c_#memory_$Pointer$#5.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|))) (and (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store .cse0 ensure_array_list_has_allocated_data_member_~list.offset (select .cse1 ensure_array_list_has_allocated_data_member_~list.offset)))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= |c_#memory_$Pointer$#5.offset| (store |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store .cse2 ensure_array_list_has_allocated_data_member_~list.offset (select .cse3 ensure_array_list_has_allocated_data_member_~list.offset)))))) (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store .cse0 ensure_array_list_has_allocated_data_member_~list.offset (select .cse1 ensure_array_list_has_allocated_data_member_~list.offset)))) (<= ensure_array_list_has_allocated_data_member_~list.offset |c_ensure_array_list_has_allocated_data_member_#in~list.offset|) (= |c_#memory_$Pointer$#5.offset| (store |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store .cse2 ensure_array_list_has_allocated_data_member_~list.offset (select .cse3 ensure_array_list_has_allocated_data_member_~list.offset)))))))) is different from true [2023-11-23 07:40:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:40:35,701 INFO L93 Difference]: Finished difference Result 929 states and 1357 transitions. [2023-11-23 07:40:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 07:40:35,702 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 9 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 276 [2023-11-23 07:40:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:40:35,705 INFO L225 Difference]: With dead ends: 929 [2023-11-23 07:40:35,705 INFO L226 Difference]: Without dead ends: 431 [2023-11-23 07:40:35,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 312 SyntacticMatches, 22 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=187, Invalid=1304, Unknown=3, NotChecked=228, Total=1722 [2023-11-23 07:40:35,707 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 256 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 165 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 4309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 1153 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:40:35,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1934 Invalid, 4309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2981 Invalid, 10 Unknown, 1153 Unchecked, 2.8s Time] [2023-11-23 07:40:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-23 07:40:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 429. [2023-11-23 07:40:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 271 states have (on average 1.2287822878228782) internal successors, (333), 273 states have internal predecessors, (333), 122 states have call successors, (122), 31 states have call predecessors, (122), 35 states have return successors, (175), 124 states have call predecessors, (175), 121 states have call successors, (175) [2023-11-23 07:40:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 630 transitions. [2023-11-23 07:40:35,729 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 630 transitions. Word has length 276 [2023-11-23 07:40:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:40:35,729 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 630 transitions. [2023-11-23 07:40:35,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 9 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2023-11-23 07:40:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 630 transitions. [2023-11-23 07:40:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 07:40:35,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:40:35,731 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:40:35,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-23 07:40:35,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-23 07:40:35,944 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:40:35,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:40:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2117985435, now seen corresponding path program 1 times [2023-11-23 07:40:35,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:40:35,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169833214] [2023-11-23 07:40:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:35,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:40:36,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:40:36,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549401624] [2023-11-23 07:40:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:40:36,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:40:36,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:40:36,012 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:40:36,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-23 07:40:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:40:36,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 4289 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-23 07:40:36,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:40:36,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:40:36,976 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 26 treesize of output 14 [2023-11-23 07:40:39,004 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 26 treesize of output 14 [2023-11-23 07:41:11,421 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 20 treesize of output 8 [2023-11-23 07:41:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-23 07:41:11,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:41:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:41:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169833214] [2023-11-23 07:41:11,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:41:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549401624] [2023-11-23 07:41:11,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549401624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:41:11,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:41:11,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 07:41:11,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515269733] [2023-11-23 07:41:11,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:41:11,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:41:11,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:41:11,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:41:11,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=223, Unknown=6, NotChecked=0, Total=272 [2023-11-23 07:41:11,438 INFO L87 Difference]: Start difference. First operand 429 states and 630 transitions. Second operand has 17 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 10 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) [2023-11-23 07:41:13,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:15,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:18,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:20,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:22,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:24,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:28,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:30,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:32,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:34,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:36,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:38,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:40,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:42,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:44,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:46,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:48,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:54,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:41:56,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:02,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:04,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:06,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:08,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:10,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:12,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:15,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:17,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:19,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:21,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:24,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:26,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:28,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:35,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:37,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:39,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:41,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:43,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:45,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:47,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:49,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:42:51,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:08,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:10,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:12,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:17,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:43:19,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 07:43:22,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:24,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:27,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:29,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:31,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:33,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:35,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:37,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:43:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:43:37,547 INFO L93 Difference]: Finished difference Result 1144 states and 1698 transitions. [2023-11-23 07:43:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 07:43:37,548 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 10 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) Word has length 281 [2023-11-23 07:43:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:43:37,552 INFO L225 Difference]: With dead ends: 1144 [2023-11-23 07:43:37,552 INFO L226 Difference]: Without dead ends: 807 [2023-11-23 07:43:37,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 263 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 62.6s TimeCoverageRelationStatistics Valid=158, Invalid=944, Unknown=20, NotChecked=0, Total=1122 [2023-11-23 07:43:37,555 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 571 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 5462 mSolverCounterSat, 494 mSolverCounterUnsat, 70 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 6026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 5462 IncrementalHoareTripleChecker+Invalid, 70 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:43:37,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 3865 Invalid, 6026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 5462 Invalid, 70 Unknown, 0 Unchecked, 117.6s Time] [2023-11-23 07:43:37,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-11-23 07:43:37,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2023-11-23 07:43:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 513 states have (on average 1.230019493177388) internal successors, (631), 514 states have internal predecessors, (631), 224 states have call successors, (224), 57 states have call predecessors, (224), 65 states have return successors, (328), 231 states have call predecessors, (328), 222 states have call successors, (328) [2023-11-23 07:43:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1183 transitions. [2023-11-23 07:43:37,635 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1183 transitions. Word has length 281 [2023-11-23 07:43:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:43:37,636 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1183 transitions. [2023-11-23 07:43:37,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 10 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (36), 11 states have call predecessors, (36), 10 states have call successors, (36) [2023-11-23 07:43:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1183 transitions. [2023-11-23 07:43:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-23 07:43:37,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:43:37,638 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:43:37,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-23 07:43:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-23 07:43:37,839 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:43:37,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:43:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1066973140, now seen corresponding path program 1 times [2023-11-23 07:43:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:43:37,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867557835] [2023-11-23 07:43:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:43:37,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:43:37,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:43:37,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6153274] [2023-11-23 07:43:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:43:37,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:43:37,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:43:37,898 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:43:37,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-23 07:43:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:43:38,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 4292 conjuncts, 161 conjunts are in the unsatisfiable core [2023-11-23 07:43:38,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:43:39,090 WARN L876 $PredicateComparison]: unable to prove that (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#5.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset)))) (<= ensure_array_list_has_allocated_data_member_~list.offset |c_ensure_array_list_has_allocated_data_member_#in~list.offset|) (= |c_#memory_$Pointer$#5.offset| (store |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#5.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset)))))) is different from true [2023-11-23 07:43:39,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:39,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:43:39,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:39,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:43:39,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:43:39,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:43:39,212 WARN L876 $PredicateComparison]: unable to prove that (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (let ((.cse0 (+ ensure_array_list_has_allocated_data_member_~list.offset 32))) (and (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (let ((.cse1 (select |c_#memory_$Pointer$#5.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|))) (store (store (select |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 (select .cse1 .cse0)) ensure_array_list_has_allocated_data_member_~list.offset (select .cse1 ensure_array_list_has_allocated_data_member_~list.offset))))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= |c_#memory_$Pointer$#5.offset| (store |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (let ((.cse2 (select |c_#memory_$Pointer$#5.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|))) (store (store (select |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 (select .cse2 .cse0)) ensure_array_list_has_allocated_data_member_~list.offset (select .cse2 ensure_array_list_has_allocated_data_member_~list.offset)))))))) is different from true [2023-11-23 07:43:39,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:39,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:39,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2023-11-23 07:43:39,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:39,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2023-11-23 07:43:39,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:43:39,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:43:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 135 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 2 not checked. [2023-11-23 07:43:40,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:43:40,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:43:40,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867557835] [2023-11-23 07:43:40,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:43:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6153274] [2023-11-23 07:43:40,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6153274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:43:40,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:43:40,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-23 07:43:40,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442618973] [2023-11-23 07:43:40,711 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:43:40,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 07:43:40,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:43:40,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 07:43:40,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=475, Unknown=2, NotChecked=90, Total=650 [2023-11-23 07:43:40,713 INFO L87 Difference]: Start difference. First operand 803 states and 1183 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 18 states have internal predecessors, (99), 12 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (32), 12 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-23 07:43:46,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:43:46,422 INFO L93 Difference]: Finished difference Result 1504 states and 2264 transitions. [2023-11-23 07:43:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 07:43:46,423 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 18 states have internal predecessors, (99), 12 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (32), 12 states have call predecessors, (32), 11 states have call successors, (32) Word has length 284 [2023-11-23 07:43:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:43:46,429 INFO L225 Difference]: With dead ends: 1504 [2023-11-23 07:43:46,429 INFO L226 Difference]: Without dead ends: 1183 [2023-11-23 07:43:46,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 254 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=289, Invalid=1439, Unknown=2, NotChecked=162, Total=1892 [2023-11-23 07:43:46,432 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 405 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 5946 mSolverCounterSat, 330 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 8066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5946 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 1782 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:43:46,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 3044 Invalid, 8066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 5946 Invalid, 8 Unknown, 1782 Unchecked, 5.0s Time] [2023-11-23 07:43:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2023-11-23 07:43:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1168. [2023-11-23 07:43:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 750 states have (on average 1.232) internal successors, (924), 750 states have internal predecessors, (924), 325 states have call successors, (325), 80 states have call predecessors, (325), 92 states have return successors, (478), 337 states have call predecessors, (478), 322 states have call successors, (478) [2023-11-23 07:43:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1727 transitions. [2023-11-23 07:43:46,510 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1727 transitions. Word has length 284 [2023-11-23 07:43:46,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:43:46,511 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1727 transitions. [2023-11-23 07:43:46,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 18 states have internal predecessors, (99), 12 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (32), 12 states have call predecessors, (32), 11 states have call successors, (32) [2023-11-23 07:43:46,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1727 transitions. [2023-11-23 07:43:46,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-23 07:43:46,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:43:46,515 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:43:46,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-23 07:43:46,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:43:46,731 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:43:46,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:43:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 295779280, now seen corresponding path program 2 times [2023-11-23 07:43:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:43:46,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360621575] [2023-11-23 07:43:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:43:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:43:46,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:43:46,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397248530] [2023-11-23 07:43:46,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:43:46,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:43:46,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:43:46,788 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:43:46,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-23 07:43:47,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 07:43:47,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:43:47,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:43:47,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:43:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-11-23 07:43:47,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:43:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:43:47,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360621575] [2023-11-23 07:43:47,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:43:47,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397248530] [2023-11-23 07:43:47,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397248530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:43:47,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:43:47,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:43:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418876219] [2023-11-23 07:43:47,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:43:47,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:43:47,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:43:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:43:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:43:47,409 INFO L87 Difference]: Start difference. First operand 1168 states and 1727 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 07:43:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:43:47,848 INFO L93 Difference]: Finished difference Result 2253 states and 3428 transitions. [2023-11-23 07:43:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:43:47,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 284 [2023-11-23 07:43:47,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:43:47,855 INFO L225 Difference]: With dead ends: 2253 [2023-11-23 07:43:47,855 INFO L226 Difference]: Without dead ends: 1164 [2023-11-23 07:43:47,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:43:47,861 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 10 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:43:47,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1486 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:43:47,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-11-23 07:43:47,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1164. [2023-11-23 07:43:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 747 states have (on average 1.2289156626506024) internal successors, (918), 746 states have internal predecessors, (918), 325 states have call successors, (325), 80 states have call predecessors, (325), 91 states have return successors, (465), 337 states have call predecessors, (465), 322 states have call successors, (465) [2023-11-23 07:43:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1708 transitions. [2023-11-23 07:43:47,971 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1708 transitions. Word has length 284 [2023-11-23 07:43:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:43:47,971 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1708 transitions. [2023-11-23 07:43:47,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 07:43:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1708 transitions. [2023-11-23 07:43:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-23 07:43:47,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:43:47,974 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:43:47,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-23 07:43:48,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:43:48,190 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:43:48,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:43:48,191 INFO L85 PathProgramCache]: Analyzing trace with hash 131832148, now seen corresponding path program 1 times [2023-11-23 07:43:48,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:43:48,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932995441] [2023-11-23 07:43:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:43:48,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:43:48,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:43:48,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505551709] [2023-11-23 07:43:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:43:48,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:43:48,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:43:48,287 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:43:48,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-23 07:43:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:43:49,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 4292 conjuncts, 201 conjunts are in the unsatisfiable core [2023-11-23 07:43:49,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:43:49,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:43:49,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:43:49,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:43:49,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:43:49,671 WARN L876 $PredicateComparison]: unable to prove that (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (let ((.cse0 (+ ensure_array_list_has_allocated_data_member_~list.offset 32))) (and (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (let ((.cse1 (select |c_#memory_$Pointer$#5.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|))) (store (store (select |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 (select .cse1 .cse0)) ensure_array_list_has_allocated_data_member_~list.offset (select .cse1 ensure_array_list_has_allocated_data_member_~list.offset))))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset) (= |c_#memory_$Pointer$#5.offset| (store |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (let ((.cse2 (select |c_#memory_$Pointer$#5.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|))) (store (store (select |c_old(#memory_$Pointer$#5.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 (select .cse2 .cse0)) ensure_array_list_has_allocated_data_member_~list.offset (select .cse2 ensure_array_list_has_allocated_data_member_~list.offset)))))))) is different from true [2023-11-23 07:43:49,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:49,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:49,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2023-11-23 07:43:49,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:49,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:43:49,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2023-11-23 07:43:49,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:43:49,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:43:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 265 proven. 13 refuted. 0 times theorem prover too weak. 200 trivial. 2 not checked. [2023-11-23 07:43:50,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:43:57,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:43:57,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932995441] [2023-11-23 07:43:57,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 07:43:57,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505551709] [2023-11-23 07:43:57,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505551709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:43:57,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:43:57,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-23 07:43:57,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623136723] [2023-11-23 07:43:57,588 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 07:43:57,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 07:43:57,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:43:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 07:43:57,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=4, NotChecked=72, Total=1482 [2023-11-23 07:43:57,589 INFO L87 Difference]: Start difference. First operand 1164 states and 1708 transitions. Second operand has 23 states, 21 states have (on average 5.285714285714286) internal successors, (111), 20 states have internal predecessors, (111), 12 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (33), 11 states have call predecessors, (33), 12 states have call successors, (33) [2023-11-23 07:44:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:44:00,714 INFO L93 Difference]: Finished difference Result 1331 states and 1926 transitions. [2023-11-23 07:44:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 07:44:00,715 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.285714285714286) internal successors, (111), 20 states have internal predecessors, (111), 12 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (33), 11 states have call predecessors, (33), 12 states have call successors, (33) Word has length 284 [2023-11-23 07:44:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:44:00,718 INFO L225 Difference]: With dead ends: 1331 [2023-11-23 07:44:00,718 INFO L226 Difference]: Without dead ends: 814 [2023-11-23 07:44:00,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 312 SyntacticMatches, 22 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=346, Invalid=2410, Unknown=4, NotChecked=102, Total=2862 [2023-11-23 07:44:00,732 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 368 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 348 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 4196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 641 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:44:00,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1875 Invalid, 4196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3196 Invalid, 11 Unknown, 641 Unchecked, 2.7s Time] [2023-11-23 07:44:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-11-23 07:44:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 797. [2023-11-23 07:44:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 511 states have (on average 1.2250489236790607) internal successors, (626), 511 states have internal predecessors, (626), 221 states have call successors, (221), 56 states have call predecessors, (221), 64 states have return successors, (324), 229 states have call predecessors, (324), 219 states have call successors, (324) [2023-11-23 07:44:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1171 transitions. [2023-11-23 07:44:00,906 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1171 transitions. Word has length 284 [2023-11-23 07:44:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:44:00,906 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1171 transitions. [2023-11-23 07:44:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.285714285714286) internal successors, (111), 20 states have internal predecessors, (111), 12 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (33), 11 states have call predecessors, (33), 12 states have call successors, (33) [2023-11-23 07:44:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1171 transitions. [2023-11-23 07:44:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-23 07:44:00,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:44:00,909 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:44:00,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-23 07:44:01,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-23 07:44:01,135 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:44:01,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:44:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash 162948829, now seen corresponding path program 2 times [2023-11-23 07:44:01,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:44:01,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031454620] [2023-11-23 07:44:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:44:01,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:44:01,232 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 07:44:01,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930379804] [2023-11-23 07:44:01,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:44:01,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:44:01,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:44:01,249 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:44:01,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-23 07:44:02,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:44:02,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:44:02,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 4289 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-23 07:44:02,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:44:02,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:44:02,619 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 26 treesize of output 14 [2023-11-23 07:44:04,689 WARN L876 $PredicateComparison]: unable to prove that (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#5.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#5.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset)))) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset))) is different from true [2023-11-23 07:44:04,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:44:04,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-23 07:44:04,706 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 26 treesize of output 14 Killed by 15